CC109159661 - GE CRITICAL POWER

GE

Data Sheet

June 15, 2016

12A Digital PicoDLynxTM: Non-Isolated DC-DC Power Modules

3Vdc –14.4Vdc input; 0.45Vdc to 5.5Vdc output; 12A Output Current

Features

 Compliant to RoHS II EU “Directive 2011/65/EU”

 Compatible in a Pb-free or SnPb reflow environment

 Compliant to IPC-9592 (September 2008), Category 2,

Class II

 DOSA based

 Wide Input voltage range (3Vdc-14.4Vdc)

 Output voltage programmable from 0.6Vdc to 5.5Vdc

via external resistor. Digitally adjustable down to

0.45Vdc

 Digital interface through the PMBusTM # protocol

 Tunable LoopTM to optimize dynamic output voltage

response

 Flexible output voltage sequencing EZ-SEQUENCE

 Power Good signal

 Fixed switching frequency with capability of external

synchronization

 Output overcurrent protection (non-latching)

 Overtemperature protection

 Remote On/Off

 Ability to sink and source current

 Cost efficient open frame design

 Small size: 12.2 mm x 12.2 mm x 8.5 mm

(0.48 in x 0.48 in x 0.335 in)

 Wide operating temperature range [-40°C to

105°C(Ruggedized: -D), 85°C(Regular)]

 UL* 60950-1Recognized, CSA† C22.2 No. 60950-1-03

Certified, and VDE‡ 0805:2001-12 (EN60950-1) Licensed

 ISO** 9001 and ISO 14001 certified manufacturing

facilities

Applications

 Distributed power architectures

 Intermediate bus voltage applications

 Telecommunications equipment

 Servers and storage applications

 Networking equipment

 Industrial equipment

Description

The 12A Digital PicoDLynxTM power modules are non-isolated dc-dc converters that can deliver up to 12A of output current. These

modules operate over a wide range of input voltage (VIN = 3Vdc-14.4Vdc) and provide a precisely regulated output voltage from

0.45Vdc to 5.5Vdc, programmable via an external resistor and PMBus control. Features include a digital interface using the PMBus

protocol, remote On/Off, adjustable output voltage, over current and over temperature protection. The PMBus interface supports a

range of commands to both control and monitor the module. The module also includes the Tunable LoopTM feature that allows the

user to optimize the dynamic response of the converter to match the load with reduced amount of output capacitance leading to

savings on cost and PWB area.

* UL is a registered trademark of Underwriters Laboratories, Inc.

† CSA is a registered trademark of Canadian Standards Association.

‡ VDE is a trademark of Verband Deutscher Elektrotechniker e.V.

** ISO is a registered trademark of the International Organization of Standards

# The PMBus name and logo are registered trademarks of the System Management Interface Forum (SMIF)

TRIM

VOUT

VS+

GND

RTUNE

CTUNE

RTrim

VIN

Co

Cin

Vout+

Vin+

ON/OFF

SEQ

MODULE

PGOOD

SMBALRT#

SIG_GND

ADDR1

RADDR0

CLK

DATA

ADDR0

VS-

RADDR1

GND

SYNC

RoHS Compliant

GE

Data Sheet

12A Digital PicoDLynx

TM

: Non-Isolated DC-DC Power Modules

3Vdc –14.4Vdc input; 0.45Vdc to 5.5Vdc output; 12A Output Current

June 15, 2016

Page 2

Absolute Maximum Ratings

Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress ratings

only, functional operation of the device is not implied at these or any other conditions in excess of those given in the operations

sections of the data sheet. Exposure to absolute maximum ratings for extended periods can adversely affect the device reliability.

Parameter Device Symbol Min Max Unit

Input Voltage All VIN -0.3 15 V

Continuous

SEQ, SYNC, VS+ All 7 V

CLK, DATA, SMBALERT# All 3.6 V

Operating Ambient Temperature All TA -40 85 °C

(see Thermal Considerations section)

Storage Temperature All Tstg -55 125 °C

Electrical Specifications

Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions.

Parameter Device Symbol Min Typ Max Unit

Operating Input Voltage All VIN 3  14.4 Vdc

Maximum Input Current All IIN,max 9 Adc

(VIN=3V to 14V, IO=IO, max )

Input No Load Current

(VIN = 12Vdc, IO = 0, module enabled)

VO,set = 0.6 Vdc IIN,No load 52 mA

VO,set = 5Vdc IIN,No load 85 mA

Input Stand-by Current

(VIN = 12Vdc, module disabled) All IIN,stand-by 6.5 mA

Inrush Transient All I2t 1 A2s

Input Reflected Ripple Current, peak-to-peak

(5Hz to 20MHz, 1μH source impedance; VIN =0 to

14V, IO= IOmax ; See Test Configurations)

All 400 mAp-p

Input Ripple Rejection (120Hz) All -55 dB

GE

Data Sheet

12A Digital PicoDLynx

TM

: Non-Isolated DC-DC Power Modules

3Vdc –14.4Vdc input; 0.45Vdc to 5.5Vdc output; 12A Output Current

Electrical Specifications (continued)

Parameter Device Symbol Min Typ Max Unit

Output Voltage Set-point (with 0.1% tolerance for external

resistor used to set output voltage) All VO, set -1.0 +1.0 % VO, set

Output Voltage (Over all operating input voltage, resistive

load, and temperature conditions until end of life) All VO, set -3.0  +3.0 % VO, set

Adjustment Range (selected by an external resistor)

(Some output voltages may not be possible depending on the

input voltage – see Feature Descriptions Section)

All VO 0.6 5.5 Vdc

PMBus Adjustable Output Voltage Range All VO,adj -25 0 +25 %VO,set

PMBus Output Voltage Adjustment Step Size All 0.4 %VO,set

Remote Sense Range All 0.5 Vdc

Output Regulation (for VO ≥ 2.5Vdc)

Line (VIN=VIN, min to VIN, max) All  +0.4 % VO, set

Load (IO=IO, min to IO, max) All  10 mV

Output Regulation (for VO < 2.5Vdc)

Line (VIN=VIN, min to VIN, max) All  5 mV

Load (IO=IO, min to IO, max) All  10 mV

Temperature (Tref=TA, min to TA, max) All  0.4 % VO, set

Output Ripple and Noise on nominal output

(V

IN

=V

IN, nom

and I

O

=I

O, min

to I

O, max

Co = 0.1μF // 22 μF ceramic

capacitors)

Peak-to-Peak (5Hz to 20MHz bandwidth) All  50 100 mVpk-pk

RMS (5Hz to 20MHz bandwidth) All 20 38 mVrms

External Capacitance1

Without the Tunable LoopTM

ESR ≥ 1 mΩ All CO, max 22  47 μF

With the Tunable LoopTM

ESR ≥ 0.15 mΩ All CO, max 22  1000 μF

ESR ≥ 10 mΩ All CO, max 22  5000 μF

Output Current (in either sink or source mode) All Io 0 12 Adc

Output Current Limit Inception (Hiccup Mode)

(current limit does not operate in sink mode) All IO, lim 130 % Io,max

Output Short-Circuit Current All IO, s/c 0.92 Arms

(VO≤250mV) ( Hiccup Mode )

Efficiency VO,set = 0.6Vdc η 76.4 %

VIN= 12Vdc, TA=25°C VO, set = 1.2Vdc η 86.0 %

IO=IO, max , VO= VO,set VO,set = 1.8Vdc η 89.9 %

VO,set = 2.5Vdc η 92.2 %

VO,set = 3.3Vdc η 93.6 %

VO,set = 5.0Vdc η 95.4 %

Switching Frequency All fsw  600  kHz

1 External capacitors may require using the new Tunable LoopTM feature to ensure that the module is stable as well as getting the best

transient response. See the Tunable LoopTM section for details.

GE

Data Sheet

12A Digital PicoDLynx

TM

: Non-Isolated DC-DC Power Modules

3Vdc –14.4Vdc input; 0.45Vdc to 5.5Vdc output; 12A Output Current

Electrical Specifications (continued)

Parameter Device Symbol Min Typ Max Unit

Frequency Synchronization All

Synchronization Frequency Range All 510 720 kHz

High-Level Input Voltage All VIH 2.0 V

Low-Level Input Voltage All VIL 0.4 V

Input Current, SYNC All ISYNC 100 nA

Minimum Pulse Width, SYNC All tSYNC 100 ns

Maximum SYNC rise time All tSYNC_SH 100 ns

General Specifications

Parameter Device Min Typ Max Unit

Calculated MTBF (I

O

=0.8I

O, max

, T

A

=40°C) Telecordia Issue 2 Method 1

Case 3 All 21,774,843 Hours

Weight  2.23 (0.079)  g (oz.)

Feature Specifications

Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. See

Feature Descriptions for additional information.

Parameter Device Symbol Min Typ Max Unit

On/Off Signal Interface

(VIN=VIN, min to VIN, max ; open collector or equivalent,

Signal referenced to GND)

Device code with suffix “4” – Positive Logic (See Ordering

Information)

Logic High (Module ON)

Input High Current All IIH  1 mA

Input High Voltage All VIH 2.0  VIN,max V

Logic Low (Module OFF)

Input Low Current All IIL   1 mA

Input Low Voltage All VIL -0.2  0.6 V

Device Code with no suffix – Negative Logic (See Ordering

Information)

(On/OFF pin is open collector/drain logic input with

external pull-up resistor; signal referenced to GND)

Logic High (Module OFF)

Input High Current All IIH ― ― 1 mA

Input High Voltage All VIH 2.0 ― VIN, max Vdc

Logic Low (Module ON)

Input low Current All IIL ― ― 10 μA

Input Low Voltage All VIL -0.2 ― 0.6 Vdc

GE

Data Sheet

12A Digital PicoDLynx

TM

: Non-Isolated DC-DC Power Modules

3Vdc –14.4Vdc input; 0.45Vdc to 5.5Vdc output; 12A Output Current

Feature Specifications (cont.)

Parameter Device Symbol Min Typ Max Units

Turn-On Delay and Rise Times

(VIN=VIN, nom, IO=IO, max , VO to within ±1% of steady state)

Case 1: On/Off input is enabled and then input power is

applied (delay from instant at which VIN = VIN, min until Vo =

10% of Vo, set)

All Tdelay ― 1.1 ― msec

Case 2: Input power is applied for at least one second and

then the On/Off input is enabled (delay from instant at

which Von/Off is enabled until Vo = 10% of Vo, set) All Tdelay ― 700 ― μsec

Output voltage Rise time (time for Vo to rise from

10% of Vo, set to 90% of Vo, set) All Trise ― 3.1 ― msec

Output voltage overshoot (TA = 25oC

VIN= VIN, min to VIN, max,IO = IO, min to IO, max)

With or without maximum external capacitance

3.0 % VO, set

Over Temperature Protection

(See Thermal Considerations section) All Tref 120 °C

PMBus Over Temperature Warning Threshold * All TWARN 130 °C

Tracking Accuracy (Power-Up: 2V/ms) All VSEQ –Vo 100 mV

(Power-Down: 2V/ms) All VSEQ –Vo 100 mV

(VIN, min to VIN, max; IO, min to IO, max VSEQ < Vo)

Input Undervoltage Lockout

Turn-on Threshold All 2.475 3.025 Vdc

Turn-off Threshold All 2.25 2.75 Vdc

Hysteresis All 0.25 Vdc

PMBus Adjustable Input Under Voltage Lockout Thresholds All 2.5 14 Vdc

Resolution of Adjustable Input Under Voltage Threshold All 500 mV

PGOOD (Power Good)

Signal Interface Open Drain, Vsupply ≤ 5VDC

Overvoltage threshold for PGOOD ON All 108 %VO, set

Overvoltage threshold for PGOOD OFF All 110 %VO, set

Undervoltage threshold for PGOOD ON All 92 %VO, set

Undervoltage threshold for PGOOD OFF All 90 %VO, set

Pulldown resistance of PGOOD pin All 50 Ω

Sink current capability into PGOOD pin All 5 mA

* Over temperature Warning – Warning may not activate before alarm and unit may shutdown before warning

GE

Data Sheet

12A Digital PicoDLynx

TM

: Non-Isolated DC-DC Power Modules

3Vdc –14.4Vdc input; 0.45Vdc to 5.5Vdc output; 12A Output Current

Digital Interface Specifications

Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. See

Feature Descriptions for additional information.

Parameter Conditions Symbol Min Typ Max Unit

PMBus Signal Interface Characteristics

Input High Voltage (CLK, DATA) VIH 2.1 3.6 V

Input Low Voltage (CLK, DATA) VIL 0.8 V

Input high level current (CLK, DATA) IIH -10 10 μA

Input low level current (CLK, DATA) IIL -10 10 μA

Output Low Voltage (CLK, DATA, SMBALERT#) IOUT=2mA VOL 0.4 V

Output high level open drain leakage current (DATA,

SMBALERT#) VOUT=3.6V IOH 0 10 μA

Pin capacitance CO 0.7 pF

PMBus Operating frequency range Slave Mode FPMB 10 400 kHz

Data hold time

Receive Mode

Transmit Mode tHD:DAT 0

300 ns

Data setup time

t

SU:DAT

250 ns

Measurement System Characteristics

Read delay time

tDLY 153 192 231 μs

Output current measurement range

IRNG 0 18 A

Output current measurement resolution

IRES 62.5 mA

Output current measurement gain accuracy at 25°C

(with IOUT, CORR)

IACC ±5 %

Output current measurement offset

IOFST 0.1 A

VOUT measurement range

VOUT(rng) 0 5.5 V

V

OUT

measurement resolution

VOUT(res) 15.625 mV

V

OUT

measurement accuracy

VOUT(ACC) -15 15 %

V

OUT

measurement offset

VOUT(ofst) -3 3 %

VIN measurement range

VIN(rng) 3 14.4 V

V

IN

measurement resolution

VIN(res) 32.5 mV

V

IN

measurement accuracy

VIN(ACC) -15 15 %

VIN measurement offset

VIN(ofst) -5.5 1.4 LSB

GE

Data Sheet

12A Digital PicoDLynx

TM

: Non-Isolated DC-DC Power Modules

3Vdc –14.4Vdc input; 0.45Vdc to 5.5Vdc output; 12A Output Current

Characteristic Curves

The following figures provide typical characteristics for the 12A Digital PicoDLynxTM at 0.6Vo and 25oC.

EFFICIENCY, η (%)

OUTPUT CURRENT, Io (A)

OUTPUT CURRENT, IO (A) AMBIENT TEMPERATURE, TA OC

Figure 1. Converter Efficiency versus Output Current.

Figure 2. Derating Output Current versus Ambient

Temperature and Airflow.

OUTPUT VOLTAGE

VO (V) (20mV/div)

OUTPUT CURRENT, OUTPUT VOLTAGE

IO (A) (10Adiv) VO (V) (5mV/div)

TIME, t (1µs/div) TIME, t (20µs /div)

Figure 3. Typical output ripple and noise (CO=22μF ceramic,

VIN = 12V, Io = Io,max, ).

Figure 4. Transient Response to Dynamic Load Change from

50% to 100% at 12Vin, Cout= 3x47uF+6x330uF, CTune=47nF,

RTune=180ohms

OUTPUT VOLTAGE ON/OFF VOLTAGE

VO (V) (200mV/div) VON/OFF (V) (5V/div)

OUTPUT VOLTAGE INPUT VOLTAGE

VO (V) (200mV/div) VIN (V) (5V/div)

TIME, t (2ms/div) TIME, t (2ms/div)

Figure 5. Typical Start-up Using On/Off Voltage (Io = Io,max).

Figure 6. Typical Start-up Using Input Voltage (V

IN

= 12V, I

o

=

Io,max).

50

55

60

65

70

75

80

85

0246810 12

Vin=3V

Vin=14V

Vin=12V

0

2

4

6

8

10

12

55 65 75 85 95 105

2m/s

(400LFM)

1m/s

(

200LFM

)

0.5m/s

(100LFM)

2m/s

(400LFM)

1.5m/s

(300LFM)

NC

Standard Part

(85°C)

Ruggedized (D)

Part (105°C)

GE

Data Sheet

12A Digital PicoDLynx

TM

: Non-Isolated DC-DC Power Modules

3Vdc –14.4Vdc input; 0.45Vdc to 5.5Vdc output; 12A Output Current

Characteristic Curves

The following figures provide typical characteristics for the 12A Digital PicoDLynxTM at 1.2Vo and 25oC.

EFFICIENCY, η (%)

OUTPUT CURRENT, Io (A)

OUTPUT CURRENT, IO (A) AMBIENT TEMPERATURE, TA OC

Figure 7. Converter Efficiency versus Output Current.

Figure 8. Derating Output Current versus Ambient

Temperature and Airflow.

OUTPUT VOLTAGE

VO (V) (20mV/div)

OUTPUT CURRENT OUTPUT VOLTAGE

IO (A) (10Adiv) VO (V) (10mV/div)

TIME, t (1µs/div) TIME, t (20µs /div)

Figure 9. Typical output ripple and noise (CO=22μF ceramic,

VIN = 12V, Io = Io,max, ).

Figure 10. Transient Response to Dynamic Load Change from

50% to 100% at 12Vin, Cout= 1x47uF+3x330uF, CTune=10nF

& RTune=220ohms

OUTPUT VOLTAGE ON/OFF VOLTAGE

VO (V) (500mV/div) VON/OFF (V) (5V/div)

OUTPUT VOLTAGE INPUT VOLTAGE

VO (V) (500mV/div) VIN (V) (5V/div)

TIME, t (2ms/div) TIME, t (2ms/div)

Figure 11. Typical Start-up Using On/Off Voltage (Io = Io,max).

Figure 12. Typical Start-up Using Input Voltage (V

IN

= 12V, I

o

=

Io,max).

50

55

60

65

70

75

80

85

90

95

0246810 12

Vin=3V

Vin=14V

Vin=12V

0

2

4

6

8

10

12

55 65 75 85 95 105

2m/s

(400LFM)

1.5m/s

(300LFM)

1m/s

(200LFM)

0.5m/s

(100LFM)

NC

Standard

Par t (85 C)

Ruggedized (D)

Part (105°C)

GE

Data Sheet

12A Digital PicoDLynx

TM

: Non-Isolated DC-DC Power Modules

3Vdc –14.4Vdc input; 0.45Vdc to 5.5Vdc output; 12A Output Current

Characteristic Curves

The following figures provide typical characteristics for the 12A Digital PicoDLynxTM at 1.8Vo and 25oC.

EFFICIENCY, η (%)

OUTPUT CURRENT, Io (A)

OUTPUT CURRENT, IO (A) AMBIENT TEMPERATURE, TA OC

Figure 13. Converter Efficiency versus Output Current.

Figure 14. Derating Output Current versus Ambient

Temperature and Airflow.

OUTPUT VOLTAGE

VO (V) (20mV/div)

OUTPUT CURRENT, OUTPUT VOLTAGE

IO (A) (10Adiv) VO (V) (20mV/div)

TIME, t (1µs/div) TIME, t (20µs /div)

Figure 15. Typical output ripple and noise (CO=22μF ceramic,

VIN = 12V, Io = Io,max, ).

Figure 16. Transient Response to Dynamic Load Change from

50% to 100% at 12Vin, Cout=

1x47uF+2x330uF,CTune=5600pF & RTune=270ohms

OUTPUT VOLTAGE ON/OFF VOLTAGE

VO (V) (500mV/div) VON/OFF (V) (5V/div)

OUTPUT VOLTAGE INPUT VOLTAGE

VO (V) (500mV/div) VIN (V) (5V/div)

TIME, t (2ms/div) TIME, t (2ms/div)

Figure 17. Typical Start-up Using On/Off Voltage (Io = Io,max).

Figure 18. Typical Start-up Using Input Voltage (V

IN

= 12V, I

o

=

Io,max).

70

75

80

85

90

95

0246810 12

Vin=3.5V

Vin=14V Vin=12V

0

2

4

6

8

10

12

55 65 75 85 95 105

2m/s

(400LFM)

1.5m/s

(300LFM)

1m/s

(200LFM)

0.5m/s

(100LFM)

NC

Standard Part

(85°C)

Ruggedized (D)

Part (105°C)

GE

Data Sheet

12A Digital PicoDLynx

TM

: Non-Isolated DC-DC Power Modules

3Vdc –14.4Vdc input; 0.45Vdc to 5.5Vdc output; 12A Output Current

Characteristic Curves

The following figures provide typical characteristics for the 12A Digital PicoDLynxTM at 2.5Vo and 25oC.

EFFICIENCY, η (%)

OUTPUT CURRENT, Io (A)

OUTPUT CURRENT, IO (A) AMBIENT TEMPERATURE, TA OC

Figure 19. Converter Efficiency versus Output Current.

Figure 20. Derating Output Current versus Ambient

Temperature and Airflow.

OUTPUT VOLTAGE

VO (V) (20mV/div)

OUTPUT CURRENT, OUTPUT VOLTAGE

IO (A) (10Adiv) VO (V) (20mV/div)

TIME, t (1µs/div) TIME, t (20µs /div)

Figure 21. Typical output ripple and noise (CO=22μF ceramic,

VIN = 12V, Io = Io,max, ).

Figure 22. Transient Response to Dynamic Load Change from

50% to 100% at 12Vin, Cout=

1x47uF+1x330uF,CTune=3300pF & RTune=270ohms

OUTPUT VOLTAGE ON/OFF VOLTAGE

VO (V) (1V/div) VON/OFF (V) (5V/div)

OUTPUT VOLTAGE INPUT VOLTAGE

VO (V) (1V/div) VIN (V) (5V/div)

TIME, t (2ms/div) TIME, t (2ms/div)

Figure 23. Typical Start-up Using On/Off Voltage (Io = Io,max).

Figure 24. Typical Start-up Using Input Voltage (V

IN

= 12V, I

o

=

Io,max).

70

75

80

85

90

95

100

0246810 12

Vin=4.5V

Vin=14V Vin=12V

0

2

4

6

8

10

12

55 65 75 85 95 105

2m/s

(400LFM

1.5m/s

(300LFM)

1m/s

(200LFM)

0.5m/s

(100LFM)

NC

Standard

Part (85°C)

Ruggedized (D)

Part (105°C)

GE

Data Sheet

12A Digital PicoDLynx

TM

: Non-Isolated DC-DC Power Modules

3Vdc –14.4Vdc input; 0.45Vdc to 5.5Vdc output; 12A Output Current

Characteristic Curves

The following figures provide typical characteristics for the 12A Digital PicoDLynxTM at 3.3Vo and 25oC.

EFFICIENCY, η (%)

OUTPUT CURRENT, Io (A)

OUTPUT CURRENT, IO (A) AMBIENT TEMPERATURE, TA OC

Figure 25. Converter Efficiency versus Output Current.

Figure 26. Derating Output Current versus Ambient

Temperature and Airflow.

OUTPUT VOLTAGE

VO (V) (20mV/div)

OUTPUT CURRENT, OUTPUT VOLTAGE

IO (A) (10Adiv) VO (V) (50mV/div)

TIME, t (1µs/div) TIME, t (20µs /div)

Figure 27. Typical output ripple and noise (CO=22μF ceramic,

VIN = 12V, Io = Io,max, ).

Figure 28 Transient Response to Dynamic Load Change from

50% to 100% at 12Vin, Cout=

1x47uF+1x330uF,CTune=2700pF & RTune=330ohms

OUTPUT VOLTAGE ON/OFF VOLTAGE

VO (V) (1V/div) VON/OFF (V) (5V/div)

OUTPUT VOLTAGE INPUT VOLTAGE

VO (V) (1V/div) VIN (V) (5V/div)

TIME, t (2ms/div) TIME, t (2ms/div)

Figure 29. Typical Start-up Using On/Off Voltage (Io = Io,max).

Figure 30. Typical Start-up Using Input Voltage (V

IN

= 12V, I

o

=

Io,max).

70

75

80

85

90

95

100

0246810 12

Vin=4.5V Vin=14V Vin=12V

0

2

4

6

8

10

12

55 65 75 85 95 105

2m/s

(400LFM)

1.5m/s

(300LFM)

1m/s

(200LFM)

0.5m/s

(100LFM)

NC

Standard

Part (85°C)

Ruggedized (D)

Part (105°C)

GE

Data Sheet

12A Digital PicoDLynx

TM

: Non-Isolated DC-DC Power Modules

3Vdc –14.4Vdc input; 0.45Vdc to 5.5Vdc output; 12A Output Current

Characteristic Curves

The following figures provide typical characteristics for the 12A Digital PicoDLynxTM at 5Vo and 25oC.

EFFICIENCY, η (%)

OUTPUT CURRENT, Io (A)

OUTPUT CURRENT, IO (A) AMBIENT TEMPERATURE, TA OC

Figure 31. Converter Efficiency versus Output Current.

Figure 32. Derating Output Current versus Ambient

Temperature and Airflow.

OUTPUT VOLTAGE

VO (V) (20mV/div)

OUTPUT CURRENT, OUTPUT VOLTAGE

IO (A) (10Adiv) VO (V) (50mV/div)

TIME, t (1µs/div) TIME, t (20µs /div)

Figure 33. Typical output ripple and noise (CO=22μF ceramic,

VIN = 12V, Io = Io,max, ).

Figure 34. Transient Response to Dynamic Load Change from

50% to 100% at 12Vin, Cout= 5x47uF, CTune=1500pF &

RTune=330ohms

OUTPUT VOLTAGE ON/OFF VOLTAGE

VO (V) (2V/div) VON/OFF (V) (5V/div)

OUTPUT VOLTAGE INPUT VOLTAGE

VO (V) (2V/div) VIN (V) (5V/div)

TIME, t (2ms/div) TIME, t (2ms/div)

Figure 35. Typical Start-up Using On/Off Voltage (Io = Io,max). Figure 36. Typical Start-up Using Input Voltage (VIN = 12V, Io =

Io,max).

70

75

80

85

90

95

100

0246810 12

Vin=7V Vin=14V Vin=12V

0

2

4

6

8

10

12

45 55 65 75 85 95 105

2m/s

(400LFM)

1.5m/s

(300LFM)

1m/s

(200LFM)

0.5m/s

(100LFM)

NC

Ruggedized (D)

Part (105°C)

Standard

Part (85°C)

GE

Data Sheet

12A Digital PicoDLynx

TM

: Non-Isolated DC-DC Power Modules

3Vdc –14.4Vdc input; 0.45Vdc to 5.5Vdc output; 12A Output Current

Design Considerations

Input Filtering

The 12A Digital PicoDLynxTM module should be connected

to a low ac-impedance source. A highly inductive source

can affect the stability of the module. An input

capacitance must be placed directly adjacent to the input

pin of the module, to minimize input ripple voltage and

ensure module stability.

To minimize input voltage ripple, ceramic capacitors are

recommended at the input of the module. Figure 37 shows

the input ripple voltage for various output voltages at 12A

of load current with 2x22 µF or 3x22 µF ceramic

capacitors and an input of 12V.

Figure 37. Input ripple voltage for various output

voltages with 2x22 µF or 3x22 µF ceramic capacitors at

the input (12A load). Input voltage is 12V.

Output Filtering

These modules are designed for low output ripple voltage

and will meet the maximum output ripple specification with

0.1 µF ceramic and 22 µF ceramic capacitors at the output of

the module. However, additional output filtering may be

required by the system designer for a number of reasons.

First, there may be a need to further reduce the output ripple

and noise of the module. Second, the dynamic response

characteristics may need to be customized to a particular

load step change.

To reduce the output ripple and improve the dynamic

response to a step load change, additional capacitance at

the output can be used. Low ESR polymer and ceramic

capacitors are recommended to improve the dynamic

response of the module. Figure 38 provides output ripple

information for different external capacitance values at

various Vo and a full load current of 12A. For stable

operation of the module, limit the capacitance to less than

the maximum output capacitance as specified in the

electrical specification table. Optimal performance of the

module can be achieved by using the Tunable LoopTM feature

described later in this data sheet.

Figure 38. Output ripple voltage for various output

voltages with external 1x22 µF, 1x47 µF, 2x47 µF or 4x47

µF ceramic capacitors at the output (12A load). Input

voltage is 12V.

Safety Considerations

For safety agency approval the power module must be

installed in compliance with the spacing and separation

requirements of the end-use safety agency standards, i.e.,

UL 60950-1 2nd, CSA C22.2 No. 60950-1-07, DIN EN 60950-

1:2006 + A11 (VDE0805 Teil 1 + A11):2009-11; EN 60950-

1:2006 + A11:2009-03.

For the converter output to be considered meeting the

requirements of safety extra-low voltage (SELV), the input

must meet SELV requirements. The power module has

extra-low voltage (ELV) outputs when all inputs are ELV.

The input to these units is to be provided with a slow-blow

fuse with a maximum rating of 15 A in the positive input

lead.

50

100

150

200

250

0.5 1.5 2.5 3.5 4.5

R ipple (mVp-p)

Output Vol tage(Vol ts)

2x22uF

3x22uF

0

10

20

30

40

50

60

0.5 1.5 2.5 3.5 4.5

R ipple (mVp-p)

Output Vol tage(Vol ts)

1x 22uF Ex t C ap

1x 47uF Ex t C ap

2x 47uF Ex t C ap

4x 47uF Ex t C ap

GE

Data Sheet

12A Digital PicoDLynx

TM

: Non-Isolated DC-DC Power Modules

3Vdc –14.4Vdc input; 0.45Vdc to 5.5Vdc output; 12A Output Current

Analog Feature Descriptions

Remote On/Off

The module can be turned ON and OFF either by using the

ON/OFF pin (Analog interface) or through the PMBus interface

(Digital). The module can be configured in a number of ways

through the PMBus interface to react to the two ON/OFF

inputs:

• Module ON/OFF can be controlled only through

the analog interface (digital interface ON/OFF

commands are ignored)

• Module ON/OFF can be controlled only through

the PMBus interface (analog interface is ignored)

• Module ON/OFF can be controlled by either the

analog or digital interface

The default state of the module (as shipped from the factory)

is to be controlled by the analog interface only. If the digital

interface is to be enabled, or the module is to be controlled

only through the digital interface, this change must be made

through the PMBus. These changes can be made and written

to non-volatile memory on the module so that it is

remembered for subsequent use.

Analog On/Off

The 12A Digital PicoDLynxTM power modules feature an

On/Off pin for remote On/Off operation. Two On/Off logic

options are available. In the Positive Logic On/Off option,

(device code suffix “4” – see Ordering Information), the

module turns ON during a logic High on the On/Off pin and

turns OFF during a logic Low. With the Negative Logic On/Off

option, (no device code suffix, see Ordering Information), the

module turns OFF during logic High and ON during logic Low.

The On/Off signal should be always referenced to ground. For

either On/Off logic option, leaving the On/Off pin

disconnected will turn the module ON when input voltage is

present.

For positive logic modules, the circuit configuration for using

the On/Off pin is shown in Figure 39. When the external

transistor Q2 is in the OFF state, the internal transistor Q1 is

turned ON, and the internal PWM #Enable signal is pulled low

causing the module to be ON. When transistor Q2 is turned

ON, the On/Off pin is pulled low and the module is OFF. A

suggested value for Rpullup is 20kΩ.

For negative logic On/Off modules, the circuit configuration is

shown in Fig. 40. The On/Off pin should be pulled high with

an external pull-up resistor (suggested value for the 3V to

14V input range is 20Kohms). When transistor Q2 is in the

OFF state, the On/Off pin is pulled high, transistor Q1 is

turned ON and the module is OFF. To turn the module ON, Q2

is turned ON pulling the On/Off pin low, turning transistor Q1

OFF resulting in the PWM Enable pin going high.

Digital On/Off

Please see the Digital Feature Descriptions section.

Figure 39. Circuit configuration for using positive On/Off

logic.

Figure 40. Circuit configuration for using negative On/Off

logic.

Monotonic Start-up and Shutdown

The module has monotonic start-up and shutdown behavior

for any combination of rated input voltage, output current

and operating temperature range.

Startup into Pre-biased Output

The module can start into a prebiased output as long as the

prebias voltage is 0.5V less than the set output voltage.

Analog Output Voltage Programming

The output voltage of the module is programmable to any

voltage from 0.6dc to 5.5Vdc by connecting a resistor

between the Trim and SIG_GND pins of the module. Certain

restrictions apply on the output voltage set point depending

on the input voltage. These are shown in the Output Voltage

vs. Input Voltage Set Point Area plot in Fig. 41. The Upper

Limit curve shows that for output voltages lower than 1V, the

input voltage must be lower than the maximum of 14.4V. The

Lower Limit curve shows that for output voltages higher than

0.6V, the input voltage needs to be larger than the minimum

10K

Q2 22K

Q1

22K

Rpullup

+3.3V

+VIN

GND

+

_

VON/OFF

ON/OFF

IENABLE

DLYNX M ODUL E

10K

Q2 22K

Q1

22K

Rpullup

+3.3V

+VIN

GND

_

+

I

ON/OFF

V

ON/OFF ENABLE

DLYNX M ODUL E

GE

Data Sheet

12A Digital PicoDLynx

TM

: Non-Isolated DC-DC Power Modules

3Vdc –14.4Vdc input; 0.45Vdc to 5.5Vdc output; 12A Output Current

of 3V.

Figure 41. Output Voltage vs. Input Voltage Set Point Area

plot showing limits where the output voltage can be set for

different input voltages.

V

O

(+)

TRIM

VS─

R

trim

LOAD

V

IN

(+)

ON/OFF

VS+

SIG_GND

Caution – Do not connect SIG_GND to GND elsewhere in the

layout

Figure 42. Circuit configuration for programming output

voltage using an external resistor.

Without an external resistor between Trim and SIG_GND pins,

the output of the module will be 0.6Vdc.To calculate the

value of the trim resistor, Rtrim for a desired output voltage,

should be as per the following equation:

( )

Ω













−

=k

Vo

Rtrim 6.0

12

Rtrim is the external resistor in kΩ

Vo is the desired output voltage.

Table 1 provides Rtrim values required for some common

output voltages.

Table 1

V

O, set

(V)

Rtrim (KΩ)

0.6 Open

0.9 40

1.0 30

1.2

20

1.5 13.33

1.8

10

2.5 6.316

3.3

4.444

5.0 2.727

Digital Output Voltage Adjustment

Please see the Digital Feature Descriptions section.

Remote Sense

The power module has a Remote Sense feature to minimize

the effects of distribution losses by regulating the voltage

between the sense pins (VS+ and VS-). The voltage drop

between the sense pins and the VOUT and GND pins of the

module should not exceed 0.5V.

Analog Voltage Margining

Output voltage margining can be implemented in the

module by connecting a resistor, Rmargin-up, from the Trim pin

to the ground pin for margining-up the output voltage and

by connecting a resistor, Rmargin-down, from the Trim pin to

output pin for margining-down. Figure 43 shows the circuit

configuration for output voltage margining. The POL

Programming Tool, available at www.gecriticalpower.com

under the Downloads section, also calculates the values of

Rmargin-up and Rmargin-down for a specific output voltage and %

margin. Please consult your local GE technical

representative for additional details.

Figure 43. Circuit Configuration for margining Output

voltage.

Digital Output Voltage Margining

Please see the Digital Feature Descriptions section.

0

2

4

6

8

10

12

14

16

0.5 11.5 22.5 33.5 44.5 55.5 6

Input Voltage (v)

Output Voltage (V)

Lower

Upper

Vo

MODULE

SIG_GND

Trim

Q1

Rtrim

Rmargin-up

Q2

Rmargin-down

GE

Data Sheet

12A Digital PicoDLynx

TM

: Non-Isolated DC-DC Power Modules

3Vdc –14.4Vdc input; 0.45Vdc to 5.5Vdc output; 12A Output Current

Output Voltage Sequencing

The power module includes a sequencing feature, EZ-

SEQUENCE that enables users to implement various types of

output voltage sequencing in their applications. This is

accomplished via an additional sequencing pin. When not

using the sequencing feature, leave it unconnected.

The voltage applied to the SEQ pin should be scaled down by

the same ratio as used to scale the output voltage down to

the reference voltage of the module. This is accomplished by

an external resistive divider connected across the

sequencing voltage before it is fed to the SEQ pin as shown

in Fig. 44. In addition, a small capacitor (suggested value

100pF) should be connected across the lower resistor R1.

For all DLynx modules, the minimum recommended delay

between the ON/OFF signal and the sequencing signal is

10ms to ensure that the module output is ramped up

according to the sequencing signal. This ensures that the

module soft-start routine is completed before the

sequencing signal is allowed to ramp up.

Figure 44. Circuit showing connection of the sequencing

signal to the SEQ pin.

When the scaled down sequencing voltage is applied to the

SEQ pin, the output voltage tracks this voltage until the

output reaches the set-point voltage. The final value of the

sequencing voltage must be set higher than the set-point

voltage of the module. The output voltage follows the

sequencing voltage on a one-to-one basis. By connecting

multiple modules together, multiple modules can track their

output voltages to the voltage applied on the SEQ pin.

The module’s output can track the SEQ pin signal with slopes

of up to 0.5V/msec during power-up or power-down.

To initiate simultaneous shutdown of the modules, the SEQ

pin voltage is lowered in a controlled manner. The output

voltage of the modules tracks the voltages below their set-

point voltages on a one-to-one basis. A valid input voltage

must be maintained until the tracking and output voltages

reach ground potential.

Note that in all digital DLynx series of modules, the PMBus

Output Undervoltage Fault will be tripped when sequencing

is employed. This will be detected using the STATUS_WORD

and STATUS_VOUT PMBus commands. In addition, the

SMBALERT# signal will be asserted low as occurs for all faults

and warnings. To avoid the module shutting down due to the

Output Undervoltage Fault, the module must be set to

continue operation without interruption as the response to

this fault (see the description of the PMBus command

VOUT_UV_FAULT_RESPONSE for additional information).

Overcurrent Protection

To provide protection in a fault (output overload) condition,

the unit is equipped with internal current-limiting circuitry

and can endure current limiting continuously. At the point of

current-limit inception, the unit enters hiccup mode. The unit

operates normally once the output current is brought back

into its specified range.

Digital Adjustable Overcurrent Warning

Please see the Digital Feature Descriptions section.

Overtemperature Protection

To provide protection in a fault condition, the unit is

equipped with a thermal shutdown circuit. The unit will shut

down if the overtemperature threshold of 150oC(typ) is

exceeded at the thermal reference point Tref .Once the unit

goes into thermal shutdown it will then wait to cool before

attempting to restart.

Digital Temperature Status via PMBus

Please see the Digital Feature Descriptions section.

Digitally Adjustable Output Over and Under Voltage

Protection

Please see the Digital Feature Descriptions section.

Input Undervoltage Lockout

At input voltages below the input undervoltage lockout limit,

the module operation is disabled. The module will begin to

operate at an input voltage above the undervoltage lockout

turn-on threshold.

Digitally Adjustable Input Undervoltage Lockout

Please see the Digital Feature Descriptions section.

Digitally Adjustable Power Good Thresholds

Please see the Digital Feature Descriptions section.

100 pF

DLynx M odul e

R1=Rtrim

20K

SIG_GND

SEQ

V

GE

Data Sheet

12A Digital PicoDLynx

TM

: Non-Isolated DC-DC Power Modules

3Vdc –14.4Vdc input; 0.45Vdc to 5.5Vdc output; 12A Output Current

Synchronization

The module switching frequency can be synchronized to a

signal with an external frequency within a specified range.

Synchronization can be done by using the external signal

applied to the SYNC pin of the module as shown in Fig. 45,

with the converter being synchronized by the rising edge of

the external signal. The Electrical Specifications table

specifies the requirements of the external SYNC signal. If the

SYNC pin is not used, the module should free run at the

default switching frequency. If synchronization is not being

used, connect the SYNC pin to GND.

MODULE

SYNC

GND

+

─

Figure 45. External source connections to synchronize

switching frequency of the module.

Measuring Output Current, Output Voltage and Input

Voltage

Please see the Digital Feature Descriptions section.

Dual Layout

Identical dimensions and pin layout of Analog and Digital

PicoDLynx modules permit migration from one to the other

without needing to change the layout. To support this, 2

separate Trim Resistor locations have to be provided in the

layout. As shown in Fig. 46, for the digital modules, the

resistor is connected between the TRIM pad and SGND and in

the case of the analog module it is connected between TRIM

and GND.

Caution – For digital modules, do not connect SIG_GND to

GND elsewhere in the layout

Figure 46. Connections to support either Analog or Digital

PicoDLynx on the same layout.

Tunable LoopTM

The module has a feature that optimizes transient response

of the module called Tunable LoopTM.

External capacitors are usually added to the output of the

module for two reasons: to reduce output ripple and noise

(see Figure 38) and to reduce output voltage deviations from

the steady-state value in the presence of dynamic load

current changes. Adding external capacitance however

affects the voltage control loop of the module, typically

causing the loop to slow down with sluggish response.

Larger values of external capacitance could also cause the

module to become unstable.

The Tunable LoopTM allows the user to externally adjust the

voltage control loop to match the filter network connected

to the output of the module. The Tunable LoopTM is

implemented by connecting a series R-C between the VS+

and TRIM pins of the module, as shown in Fig. 47. This R-C

allows the user to externally adjust the voltage loop

feedback compensation of the module.

Figure. 47. Circuit diagram showing connection of RTUME

and CTUNE to tune the control loop of the module.

Recommended values of RTUNE and CTUNE for different output

capacitor combinations are given in Table 2. Table 2 shows

the recommended values of RTUNE and CTUNE for different

values of ceramic output capacitors up to 1000uF that

might be needed for an application to meet output ripple

and noise requirements. Selecting RTUNE and CTUNE according

to Table 2 will ensure stable operation of the module.

In applications with tight output voltage limits in the

presence of dynamic current loading, additional output

capacitance will be required. Table 3 lists recommended

values of RTUNE and CTUNE in order to meet 2% output

voltage deviation limits for some common output voltages

in the presence of a 6A to 12A step change (50% of full load),

with an input voltage of 12V.

Please contact your GE technical representative to obtain

more details of this feature as well as for guidelines on how

to select the right value of external R-C to tune the module

for best transient performance and stable operation for

other output capacitance values.

VS+

MODULE

SIG_GND

TRIM

VOUT

RTune

CTune

RTrim

CO

GND

MODULE

(PVX012 / PDT012)

Rtrim1

for

Digital

GND(Pin 7)

SIG_GND

TRIM

Rtrim2

for

Analog

GE

Data Sheet

12A Digital PicoDLynx

TM

: Non-Isolated DC-DC Power Modules

3Vdc –14.4Vdc input; 0.45Vdc to 5.5Vdc output; 12A Output Current

Table 2. General recommended values of of RTUNE and CTUNE

for Vin=12V and various external ceramic capacitor

combinations.

Table 3. Recommended values of RTUNE and CTUNE to obtain

transient deviation of 2% of Vout for a 6A step load with

Vin=12V.

Vo 5V 3.3V 2.5V 1.8V 1.2V 0.6V

Co 5x47µF

1x47µF

+

330µF

Polymer

3x47µF

+

330µF

Polymer

1x47µF +

2x330µ

F

Polymer

1x47µF +

3x330µ

F

Polymer

3x47µF +

6x330µF

Polymer

R

TUNE 330 330 270 270 220 180

C

TUNE 1500pF

2700pF 3300pF 5600pF 10nF 47nF

∆V

99mV 58mV 47mV 34mV 24mV 12mV

Note: The capacitors used in the Tunable Loop tables are

47 μF/3 mΩ ESR ceramic and 330 μF/12 mΩ ESR polymer

capacitors.

Co 1x47

µ

F 2x47

µ

F 4x47

µ

F 6x47

µ

F 10x47

µ

F

RTUNE 330 330 330 330 220

CTUNE 100pF 560pF 1500pF 2200pF 10nF

Co 20x47

µ

F

RTUNE 180

CTUNE 6800pF

GE

Data Sheet

12A Digital PicoDLynx

TM

: Non-Isolated DC-DC Power Modules

3Vdc –14.4Vdc input; 0.45Vdc to 5.5Vdc output; 12A Output Current

Digital Feature Descriptions

PMBus Interface Capability

The 12A Digital PicoDLynxTM power modules have a PMBus

interface that supports both communication and control. The

PMBus Power Management Protocol Specification can be

obtained from www.pmbus.org. The modules support a

subset of version 1.1 of the specification (see Table 6 for a list

of the specific commands supported). Most module

parameters can be programmed using PMBus and stored as

defaults for later use.

All communication over the module PMBus interface must

support the Packet Error Checking (PEC) scheme. The PMBus

master must generate the correct PEC byte for all

transactions, and check the PEC byte returned by the

module.

The module also supports the SMBALERT# response protocol

whereby the module can alert the bus master if it wants to

talk. For more information on the SMBus alert response

protocol, see the System Management Bus (SMBus)

specification.

The module has non-volatile memory that is used to store

configuration settings. Not all settings programmed into the

device are automatically saved into this non-volatile

memory, only those specifically identified as capable of being

stored can be saved (see Table 6 for which command

parameters can be saved to non-volatile storage).

PMBus Data Format

For commands that set thresholds, voltages or report such

quantities, the module supports the “Linear” data format

among the three data formats supported by PMBus. The

Linear Data Format is a two byte value with an 11-bit, two’s

complement mantissa and a 5-bit, two’s complement

exponent. The format of the two data bytes is shown below:

Data Byte High

7

6

5

4

3

2

1

0

7

6

5

4

3

2

1

0

Data Byte Low

Exponent

MSB

Mantissa

MSB

The value is of the number is then given by

Value = Mantissa x 2 Exponent

PMBus Addressing

The power module can be addressed through the PMBus

using a device address. The module has 64 possible

addresses (0 to 63 in decimal) which can be set using

resistors connected from the ADDR0 and ADDR1 pins to

SIG_GND. Note that some of these addresses (0, 1, 2, 3, 4, 5,

6, 7, 8, 9, 10, 11 12, 40, 44, 45, 55 in decimal) are reserved

according to the SMBus specifications and may not be

useable. The address is set in the form of two octal (0 to 7)

digits, with each pin setting one digit. The ADDR1 pin sets the

high order digit and ADDR0 sets the low order digit. The

resistor values suggested for each digit are shown in Table 4

(1% tolerance resistors are recommended). Note that if either

address resistor value is outside the range specified in Table

4, the module will respond to address 127.

Table 4

Digit Resistor Value (KΩ)

0 10

1 15.4

2 23.7

3 36.5

4 54.9

5 84.5

6 130

7 200

The user must know which I2C addresses are reserved in a

system for special functions and set the address of the

module to avoid interfering with other system operations.

Both 100kHz and 400kHz bus speeds are supported by the

module. Connection for the PMBus interface should follow

the High Power DC specifications given in section 3.1.3 in the

SMBus specification V2.0 for the 400kHz bus speed or the

Low Power DC specifications in section 3.1.2. The complete

SMBus specification is available from the SMBus web site,

smbus.org.

ADDR0

SIG_GND

RADDR0

RADDR1

ADDR1

Figure 48. Circuit showing connection of resistors used to

set the PMBus address of the module.

PMBus Enabled On/Off

The module can also be turned on and off via the PMBus

interface. The OPERATION command is used to actually turn

the module on and off via the PMBus, while the

ON_OFF_CONFIG command configures the combination of

analog ON/OFF pin input and PMBus commands needed to

turn the module on and off. Bit [7] in the OPERATION

command data byte enables the module, with the following

functions:

0 : Output is disabled

1 : Output is enabled

This module uses the lower five bits of the ON_OFF_CONFIG

data byte to set various ON/OFF options as follows:

Bit Position

4

3

2

1

0

Access

r/w

r

Function

PU

CMD

CPR

POL

CPA

Default Value

1

0

1

GE

Data Sheet

12A Digital PicoDLynx

TM

: Non-Isolated DC-DC Power Modules

3Vdc –14.4Vdc input; 0.45Vdc to 5.5Vdc output; 12A Output Current

PU: Sets the default to either operate any time input power is

present or for the ON/OFF to be controlled by the analog

ON/OFF input and the PMBus OPERATION command. This bit

is used together with the CP, CMD and ON bits to determine

startup.

Bit Value

Action

0

Module powers up any time power is

present regardless of state of the analog

ON/OFF pin

1

Module does not power up until

commanded by the analog ON/OFF pin and

the OPERATION command as programmed

in bits [2:0] of the ON_OFF_CONFIG register.

CMD: The CMD bit controls how the device responds to the

OPERATION command.

Bit Value

Action

0

Module ignores the ON bit in the OPERATION

command

1

Module responds to the ON bit in the

OPERATION command

CPR: Sets the response of the analog ON/OFF pin. This bit is

used together with the CMD, PU and ON bits to determine

startup.

Bit Value

Action

0

Module ignores the analog ON/OFF pin, i.e.

ON/OFF is only controlled through the

PMBUS via the OPERATION command

1

Module requires the analog ON/OFF pin to

be asserted to start the unit

PMBus Adjustable Soft Start Rise Time

The soft start rise time can be adjusted in the module via

PMBus. When setting this parameter, make sure that the

charging current for output capacitors can be delivered by

the module in addition to any load current to avoid nuisance

tripping of the overcurrent protection circuitry during

startup. The TON_RISE command sets the rise time in ms,

and allows choosing soft start times between 600μs and

9ms, with possible values listed in Table 5. Note that the

exponent is fixed at -4 (decimal) and the upper two bits of

the mantissa are also fixed at 0.

Table 5

Rise Time Exponent Mantissa

600μs 11100 00000001010

900μs

11100

00000001110

1.2ms 11100 00000010011

1.8ms 11100 00000011101

2.7ms 11100 00000101011

4.2ms 11100 00001000011

6.0ms 11100 00001100000

9.0ms 11100 00010010000

Output Voltage Adjustment Using the PMBus

The VOUT_SCALE_LOOP parameter is important for a

number of PMBus commands related to output voltage

trimming, margining, over/under voltage protection and the

PGOOD thresholds. The output voltage of the module is set

as the combination of the voltage divider formed by RTrim

and a 20kΩ upper divider resistor inside the module, and the

internal reference voltage of the module. The reference

voltage VREF is nominally set at 600mV, and the output

regulation voltage is then given by

REFOUT

V

RTrim

V×











+

=20000

Hence the module output voltage is dependent on the value

of RTrim which is connected external to the module. The

information on the output voltage divider ratio is conveyed

to the module through the VOUT_SCALE_LOOP parameter

which is calculated as follows:

RTrim

LOOPSCALEVOUT +

=20000

__

The VOUT_SCALE_LOOP parameter is specified using the

“Linear” format and two bytes. The upper five bits [7:3] of the

high byte are used to set the exponent which is fixed at –9

(decimal). The remaining three bits of the high byte [2:0] and

the eight bits of the lower byte are used for the mantissa.

The default value of the mantissa is 00100000000

corresponding to 256 (decimal), corresponding to a divider

ratio of 0.5. The maximum value of the mantissa is 512

corresponding to a divider ratio of 1. Note that the

resolution of the VOUT_SCALE_LOOP command is 0.2%.

When PMBus commands are used to trim or margin the

output voltage, the value of VREF is what is changed inside

the module, which in turn changes the regulated output

voltage of the module.

The nominal output voltage of the module can be adjusted

with a minimum step size of 0.4% over a ±25% range from

nominal using the VOUT_TRIM command over the PMBus.

The VOUT_TRIM command is used to apply a fixed offset

voltage to the output voltage command value using the

GE

Data Sheet

12A Digital PicoDLynx

TM

: Non-Isolated DC-DC Power Modules

3Vdc –14.4Vdc input; 0.45Vdc to 5.5Vdc output; 12A Output Current

“Linear” mode with the exponent fixed at –10 (decimal). The

value of the offset voltage is given by

10

)( 2_ −

×= TRIMVOUTVoffsetOUT

This offset voltage is added to the voltage set through the

divider ratio and nominal VREF to produce the trimmed output

voltage. The valid range in two’s complement for this

command is –4000h to 3FFFh. The high order two bits of

the high byte must both be either 0 or 1. If a value outside of

the +/-25% adjustment range is given with this command,

the module will set it’s output voltage to the nominal value

(as if VOUT_TRIM had been set to 0), assert SMBALRT#, set

the CML bit in STATUS_BYTE and the invalid data bit in

STATUS_CML.

Output Voltage Margining Using the PMBus

The module can also have its output voltage margined via

PMBus commands. The command VOUT_MARGIN_HIGH sets

the margin high voltage, while the command

VOUT_MARGIN_LOW sets the margin low voltage. Both the

VOUT_MARGIN_HIGH and VOUT_MARGIN_LOW commands

use the “Linear” mode with the exponent fixed at –10

(decimal). Two bytes are used for the mantissa with the upper

bit [7] of the high byte fixed at 0. The actual margined output

voltage is a combination of the VOUT_MARGIN_HIGH or

VOUT_MARGIN_LOW and the VOUT_TRIM values as shown

below.

10

)(

2)___( −

×+

=

TRIMVOUTHIGHMARGIN

VOUT

VMHOUT

10

)(

2)___(

−

×+

=

TRIMVOUTLOWMARGINVOUT

V

MLOUT

Note that the sum of the margin and trim voltages cannot be

outside the ±25% window around the nominal output

voltage. The data associated with VOUT_MARGIN_HIGH and

VOUT_MARGIN_LOW can be stored to non-volatile memory

using the STORE_DEFAULT_ALL command.

The module is commanded to go to the margined high or low

voltages using the OPERATION command. Bits [5:2] are used

to enable margining as follows:

00XX : Margin Off

0101 : Margin Low (Ignore Fault)

0110 : Margin Low (Act on Fault)

1001 : Margin High (Ignore Fault)

1010 : Margin High (Act on Fault)

PMBus Adjustable Overcurrent Warning

The module can provide an overcurrent warning via the

PMBus. The threshold for the overcurrent warning can be set

using the parameter IOUT_OC_WARN_LIMIT. This command

uses the “Linear” data format with a two byte data word

where the upper five bits [7:3] of the high byte represent the

exponent and the remaining three bits of the high byte [2:0]

and the eight bits in the low byte represent the mantissa.

The exponent is fixed at –1 (decimal). The upper five bits of

the mantissa are fixed at 0 while the lower six bits are

programmable. . For production codes after April 2013, the

value for IOUT_OC_WARN_LIMIT will be fixed at 14.5A. For

earlier production codes the actual value for

IOUT_OC_WARN_LIMIT will vary from module to module due

to calibration during production testing. The resolution of this

warning limit is 500mA. The value of the

IOUT_OC_WARN_LIMIT can be stored to non-volatile memory

using the STORE_DEFAULT_ALL command.

Temperature Status via PMBus

The module can provide information related to temperature

of the module through the STATUS_TEMPERATURE

command. The command returns information about

whether the pre-set over temperature fault threshold and/or

the warning threshold have been exceeded.

PMBus Adjustable Output Over and Under Voltage

Protection

The module has output over and under voltage protection

capability. The PMBus command VOUT_OV_FAULT_LIMIT is

used to set the output over voltage threshold from four

possible values: 108%, 110%, 112% or 115% of the

commanded output voltage. The command

VOUT_UV_FAULT_LIMIT sets the threshold that causes an

output under voltage fault and can also be selected from

four possible values: 92%, 90%, 88% or 85%. The default

values are 112% and 88% of commanded output voltage.

Both commands use two data bytes formatted as two’s

complement binary integers. The “Linear” mode is used with

the exponent fixed to –10 (decimal) and the effective over or

under voltage trip points given by:

10

)_(

10

)_(

2)___(

−

×=

LIMITFAULTUVVOUTV

LIMITFAULTOVVOUTV

REQUVOUT

REQOVOUT

Values within the supported range for over and

undervoltage detection thresholds will be set to the nearest

fixed percentage. Note that the correct value for

VOUT_SCALE_LOOP must be set in the module for the

correct over or under voltage trip points to be calculated.

In addition to adjustable output voltage protection, the 12A

Digital PicoDLynxTM module can also be programmed for the

response to the fault. The VOUT_OV_FAULT RESPONSE and

VOUT_UV_FAULT_RESPONSE commands specify the

response to the fault. Both these commands use a single

data byte with the possible options as shown below.

1. Continue operation without interruption (Bits [7:6]

= 00, Bits [5:3] = xxx)

2. Continue for four switching cycles and then shut

down if the fault is still present, followed by no

restart or continuous restart (Bits [7:6] = 01, Bits

[5:3] = 000 means no restart, Bits [5:3] = 111

means continuous restart)

3. Immediate shut down followed by no restart or

continuous restart (Bits [7:6] = 10, Bits [5:3] = 000

means no restart, Bits [5:3] = 111 means

continuous restart).

4. Module output is disabled when the fault is present

and the output is enabled when the fault no longer

exists (Bits [7:6] = 11, Bits [5:3] = xxx).

Note that separate response choices are possible for output

over voltage or under voltage faults.

GE

Data Sheet

12A Digital PicoDLynx

TM

: Non-Isolated DC-DC Power Modules

3Vdc –14.4Vdc input; 0.45Vdc to 5.5Vdc output; 12A Output Current

PMBus Adjustable Input Undervoltage Lockout

The module allows adjustment of the input under voltage

lockout and hysteresis. The command VIN_ON allows setting

the input voltage turn on threshold, while the VIN_OFF

command sets the input voltage turn off threshold. For the

VIN_ON command, possible values are 2.75V, and 3V to 14V

in 0.5V steps. For the VIN_OFF command, possible values are

2.5V to 14V in 0.5V steps. If other values are entered for

either command, they will be mapped to the closest of the

allowed values.

VIN_ON must be set higher than VIN_OFF. Attempting to

write either VIN_ON lower than VIN_OFF or VIN_OFF higher

than VIN_ON results in the new value being rejected,

SMBALERT being asserted along with the CML bit in

STATUS_BYTE and the invalid data bit in STATUS_CML.

Both the VIN_ON and VIN_OFF commands use the “Linear”

format with two data bytes. The upper five bits represent the

exponent (fixed at -2) and the remaining 11 bits represent

the mantissa. For the mantissa, the four most significant bits

are fixed at 0.

Power Good

The module provides a Power Good (PGOOD) signal that is

implemented with an open-drain output to indicate that the

output voltage is within the regulation limits of the power

module. The PGOOD signal will be de-asserted to a low state

if any condition such as overtemperature, overcurrent or loss

of regulation occurs that would result in the output voltage

going outside the specified thresholds. The PGOOD

thresholds are user selectable via the PMBus (the default

values are as shown in the Feature Specifications Section).

Each threshold is set up symmetrically above and below the

nominal value. The POWER_GOOD_ON command sets the

output voltage level above which PGOOD is asserted (lower

threshold). For example, with a 1.2V nominal output voltage,

the POWER_GOOD_ON threshold can set the lower threshold

to 1.14 or 1.1V. Doing this will automatically set the upper

thresholds to 1.26 or 1.3V.

The POWER_GOOD_OFF command sets the level below

which the PGOOD command is de-asserted. This command

also sets two thresholds symmetrically placed around the

nominal output voltage. Normally, the POWER_GOOD_ON

threshold is set higher than the POWER_GOOD_OFF

threshold.

Both POWER_GOOD_ON and POWER_GOOD_OFF

commands use the “Linear” format with the exponent fixed

at –10 (decimal). The two thresholds are given by

10

)_(

10

)_(

2)__(

−

×=

OFFGOODPOWERV

ONGOODPOWERV

OFFPGOODOUT

ONPGOODOUT

Both commands use two data bytes with bit [7] of the high

byte fixed at 0, while the remaining bits are r/w and used to

set the mantissa using two’s complement representation.

Both commands also use the VOUT_SCALE_LOOP parameter

so it must be set correctly. The default value of

POWER_GOOD_ON is set at 1.1035V and that of the

POWER_GOOD_OFF is set at 1.08V. The values associated

with these commands can be stored in non-volatile memory

using the STORE_DEFAULT_ALL command.

The PGOOD terminal can be connected through a pullup

resistor (suggested value 100KΩ) to a source of 5VDC or

lower.

Measurement of Output Current, Output Voltage

and Input Voltage

The module is capable of measuring key module

parameters such as output current and voltage and input

voltage and providing this information through the PMBus

interface. Roughly every 200μs, the module makes 16

measurements each of output current, voltage and input

voltage. Average values of of these 16 measurements are

then calculated and placed in the appropriate registers. The

values in the registers can then be read using the PMBus

interface.

Measuring Output Current Using the PMBus

The module measures current by using the inductor winding

resistance as a current sense element. The inductor winding

resistance is then the current gain factor used to scale the

measured voltage into a current reading. This gain factor is

the argument of the IOUT_CAL_GAIN command, and

consists of two bytes in the linear data format. The exponent

uses the upper five bits [7:3] of the high data byte in two-s

complement format and is fixed at –15 (decimal). The

remaining 11 bits in two’s complement binary format

represent the mantissa.

The current measurement accuracy is also improved by

each module being calibrated during manufacture with the

offset in the current reading. The IOUT_CAL_OFFSET

command is used to store and read the current offset. The

argument for this command consists of two bytes

composed of a 5-bit exponent (fixed at -4d) and a 11-bit

mantissa. This command has a resolution of 62.5mA and a

range of -4000mA to +3937.5mA. During manufacture,

each module is calibrated by measuring and storing the

current gain factor and offset into non-volatile storage.

The READ_IOUT command provides module average output

current information. This command only supports positive or

current sourced from the module. If the converter is sinking

current a reading of 0 is provided. The READ_IOUT

command returns two bytes of data in the linear data

format. The exponent uses the upper five bits [7:3] of the

high data byte in two-s complement format and is fixed at –

4 (decimal). The remaining 11 bits in two’s complement

binary format represent the mantissa with the 11th bit fixed

at 0 since only positive numbers are considered valid.

Note that the current reading provided by the module is not

corrected for temperature. The temperature corrected

current reading for module temperature TModule can be

estimated using the following equation

, =

_

+[( )×.]

GE

Data Sheet

12A Digital PicoDLynx

TM

: Non-Isolated DC-DC Power Modules

3Vdc –14.4Vdc input; 0.45Vdc to 5.5Vdc output; 12A Output Current

where IOUT_CORR is the temperature corrected value of the

current measurement, IREAD_OUT is the module current

measurement value, TIND is the temperature of the inductor

winding on the module. Since it may be difficult to measure

TIND, it may be approximated by an estimate of the module

temperature.

Measuring Output Voltage Using the PMBus

The module can provide output voltage information using

the READ_VOUT command. The command returns two bytes

of data all representing the mantissa while the exponent is

fixed at -10 (decimal).

During manufacture of the module, offset and gain

correction values are written into the non-volatile memory of

the module. The command VOUT_CAL_OFFSET can be used

to read and/or write the offset (two bytes consisting of a 16-

bit mantissa in two’s complement format) while the

exponent is always fixed at -10 (decimal). The allowed range

for this offset correction is -125 to 124mV. The command

VOUT_CAL_GAIN can be used to read and/or write the gain

correction - two bytes consisting of a five-bit exponent (fixed

at -8) and a 11-bit mantissa. The range of this correction

factor is -0.125V to +0.121V, with a resolution of 0.004V. The

corrected output voltage reading is then given by:

OFFSETCALVOUT

GAINCALVOUTInitialV

FinalV

OUT

__

)]__1()([

)(

+

+×

=

Measuring Input Voltage Using the PMBus

The module can provide output voltage information using

the READ_VIN command. The command returns two bytes of

data in the linear format. The upper five bits [7:3] of the high

data form the two’s complement representation of the

exponent which is fixed at –5 (decimal). The remaining 11 bits

are used for two’s complement representation of the

mantissa, with the 11th bit fixed at zero since only positive

numbers are valid.

During module manufacture, offset and gain correction

values are written into the non-volatile memory of the

module. The command VIN_CAL_OFFSET can be used to

read and/or write the offset - two bytes consisting of a five-

bit exponent (fixed at -5) and a11-bit mantissa in two’s

complement format. The allowed range for this offset

correction is -2 to 1.968V, and the resolution is 32mV. The

command VIN_CAL_GAIN can be used to read and/or write

the gain correction - two bytes consisting of a five-bit

exponent (fixed at -8) and a 11-bit mantissa. The range of

this correction factor is -0.125V to +0.121V, with a resolution

of 0.004V. The corrected output voltage reading is then given

by:

OFFSETCALVIN

GAINCALVINInitialV

FinalV

IN

__

)]__1()([

)(

+

+×

=

Reading the Status of the Module using the PMBus

The module supports a number of status information

commands implemented in PMBus. However, not all

features are supported in these commands. A 1 in the bit

position indicates the fault that is flagged.

STATUS_BYTE : Returns one byte of information with a

summary of the most critical device faults.

Bit

Position

Flag

Default

Value

7

X

0

6

OFF

0

5

VOUT Overvoltage

0

4

IOUT Overcurrent

0

3

VIN Undervoltage

0

2

Temperature

0

1

CML (Comm. Memory Fault)

0

None of the above

0

STATUS_WORD : Returns two bytes of information with a

summary of the module’s fault/warning conditions.

Low Byte

Bit

Position

Flag

Default

Value

7

X

0

6

OFF

0

5

VOUT Overvoltage

0

4

IOUT Overcurrent

0

3

VIN Undervoltage

0

2

Temperature

0

1

CML (Comm. Memory Fault)

0

None of the above

0

High Byte

Bit

Position

Flag

Default

Value

7

VOUT fault or warning

0

6

IOUT fault or warning

0

5

X

0

4

X

0

3

POWER_GOOD# (is negated)

0

2

X

0

1

X

0

X

0

GE

Data Sheet

12A Digital PicoDLynx

TM

: Non-Isolated DC-DC Power Modules

3Vdc –14.4Vdc input; 0.45Vdc to 5.5Vdc output; 12A Output Current

STATUS_VOUT : Returns one byte of information relating to

the status of the module’s output voltage related faults.

Bit

Position

Flag

Default

Value

7

VOUT OV Fault

0

6

X

0

5

X

0

4

VOUT UV Fault

0

3

X

0

2

X

0

1

X

0

X

0

STATUS_IOUT : Returns one byte of information relating to

the status of the module’s output voltage related faults.

Bit

Position

Flag

Default

Value

7

IOUT OC Fault

0

6

X

0

5

IOUT OC Warning

0

4

X

0

3

X

0

2

X

0

1

X

0

X

0

STATUS_TEMPERATURE : Returns one byte of information

relating to the status of the module’s temperature related

faults.

Bit

Position

Flag

Default

Value

7

OT Fault

0

6

OT Warning

0

5

X

0

4

X

0

3

X

0

2

X

0

1

X

0

X

0

STATUS_CML : Returns one byte of information relating to the

status of the module’s communication related faults.

Bit

Position

Flag

Default

Value

7

Invalid/Unsupported Command

0

6

Invalid/Unsupported Command

0

5

Packet Error Check Failed

0

4

X

0

3

X

0

2

X

0

1

Other Communication Fault

0

X

0

MFR_VIN_MIN : Returns minimum input voltage as two data

bytes of information in Linear format (upper five bits are

exponent – fixed at -2, and lower 11 bits are mantissa in

two’s complement format – fixed at 12)

MFR_VOUT_MIN : Returns minimum output voltage as two

data bytes of information in Linear format (upper five bits

are exponent – fixed at -10, and lower 11 bits are mantissa

in two’s complement format – fixed at 614)

MFR_SPECIFIC_00 : Returns information related to the type

of module and revision number. Bits [7:2] in the Low Byte

indicate the module type (000000 corresponds to the

PDT012 series of module). Bits 1:0 in the High Byte are used

to indicate the manufacturer ID, with 00 reserved for GE..

Low Byte

Bit

Position Flag Default

Value

7:2 Module Name 000000

1:0 Reserved 10

High Byte

Bit

Position Flag Default

Value

7:0 Module Revision Number None

1:0 Reserved 00

GE

Data Sheet

12A Digital PicoDLynx

TM

: Non-Isolated DC-DC Power Modules

3Vdc –14.4Vdc input; 0.45Vdc to 5.5Vdc output; 12A Output Current

Summary of Supported PMBus Commands

Please refer to the PMBus 1.1 specification for more details of these commands.

Table 6

Hex

Code

Command Brief Description

Non-Volatile

Memory Storage

01 OPERATION

Turn Module on or off. Also used to margin the output voltage

Format

Unsigned Binary

Bit Position

7

6

5

4

3

2

1

0

Access

r/w

r

r/w

r

Function

On

X

Margin

X

Default Value

0

X

02 ON_OFF_CONFIG

Configures the ON/OFF functionality as a combination of analog ON/OFF pin

and PMBus commands

Format

Unsigned Binary

Bit Position

7

6

5

4

3

2

1

0

Access

r

r/w

r

Function

X

pu

cmd

cpr

pol

cpa

Default Value

0

1

0

1

YES

03 CLEAR_FAULTS Clear any fault bits that may have been set, also releases the SMBALERT# signal

if the device has been asserting it.

10 WRITE_PROTECT

Used to control writing to the module via PMBus. Copies the current register

setting in the module whose command code matches the value in the data byte

into non-volatile memory (EEPROM) on the module

Format

Unsigned Binary

Bit Position

7

6

5

4

3

2

1

0

Access

r/w

x

Function

bit7

bit6

bit5

X

Default Value

0

X

Bit5: 0 – Enables all writes as permitted in bit6 or bit7

1 – Disables all writes except the WRITE_PROTECT, OPERATION

and ON_OFF_CONFIG (bit 6 and bit7 must be 0)

Bit 6: 0 – Enables all writes as permitted in bit5 or bit7

1 – Disables all writes except for the WRITE_PROTECT and

OPERATION commands (bit5 and bit7 must be 0)

Bit7: 0 – Enables all writes as permitted in bit5 or bit6

1 – Disables all writes except for the WRITE_PROTECT command

(bit5 and bit6 must be 0)

YES

11 STORE_DEFAULT_ALL Copies all current register settings in the module into non-volatile memory

(EEPROM) on the module. Takes about 50ms for the command to execute.

12 RESTORE_DEFAULT_ALL Restores all current register settings in the module from values in the module

non-volatile memory (EEPROM)

13 STORE_DEFAULT_CODE

Copies the current register setting in the module whose command code

matches the value in the data byte into non-volatile memory (EEPROM) on the

module

Bit Position

7

6

5

4

3

2

1

0

Access

w

Function

Command code

14 RESTORE_DEFAULT_CODE

Restores the current register setting in the module whose command code

matches the value in the data byte from the value in the module non-volatile

memory (EEPROM)

Bit Position

7

6

5

4

3

2

1

0

Access

w

Function

Command code

20 VOUT_MODE

The module has MODE set to Linear and Exponent set to -10. These values

cannot be changed

Bit Position

7

6

5

4

3

2

1

0

Access

r

Function

Mode

Exponent

Default Value

0

1

0

1

0

GE

Data Sheet

12A Digital PicoDLynx

TM

: Non-Isolated DC-DC Power Modules

3Vdc –14.4Vdc input; 0.45Vdc to 5.5Vdc output; 12A Output Current

Table 6 (continued)

Hex

Code

Command Brief Description

Non-Volatile

Memory Storage

22 VOUT_TRIM

Apply a fixed offset voltage to the output voltage command value. Exponent is

fixed at -10.

Format

Linear, two’s complement binary

Bit Position

7

6

5

4

3

2

1

0

Access

r/w

r

r/w

Function

High Byte

Default Value

0

Bit Position

7

6

5

4

3

2

1

0

Access

r/w

Function

Low Byte

Default Value

0

YES

25 VOUT_MARGIN_HIGH

Sets the target voltage for margining the output high. Exponent is fixed at -10.

Format

Linear, two’s complement binary

Bit Position

7

6

5

4

3

2

1

0

Access

r

r/w

Function

High Byte

Default Value

0

1

0

1

Bit Position

7

6

5

4

3

2

1

0

Access

r/w

Function

Low Byte

Default Value

0

1

0

1

YES

26 VOUT_MARGIN_LOW

Sets the target voltage for margining the output low. Exponent is fixed at -10

Format

Linear, two’s complement binary

Bit Position

7

6

5

4

3

2

1

0

Access

r

r/w

Function

High Byte

Default Value

0

1

0

Bit Position

7

6

5

4

3

2

1

0

Access

r/w

Function

Low Byte

Default Value

0

1

0

1

0

1

YES

29 VOUT_SCALE_LOOP

Sets the scaling of the output voltage – equal to the feedback resistor divider

ratio

Format

Linear, two’s complement binary

Bit Position

7

6

5

4

3

2

1

0

Access

r

r/w

Function

Exponent

Mantissa

Default Value

1

0

1

0

1

Bit Position

7

6

5

4

3

2

1

0

Access

r/w

Function

Mantissa

Default Value

0

YES

35 VIN_ON

Sets the value of input voltage at which the module turns on

Format

Linear, two’s complement binary

Bit Position

7

6

5

4

3

2

1

0

Access

r

Function

Exponent

Mantissa

Default Value

1

0

Bit Position

7

6

5

4

3

2

1

0

Access

r

r/w

Function

Mantissa

Default Value

0

1

0

1

YES

GE

Data Sheet

12A Digital PicoDLynx

TM

: Non-Isolated DC-DC Power Modules

3Vdc –14.4Vdc input; 0.45Vdc to 5.5Vdc output; 12A Output Current

Table 6 (continued)

Hex

Code Command Brief Description Non-Volatile

Memory Storage

36 VIN_OFF

Sets the value of input voltage at which the module turns off

Format

Linear, two’s complement binary

Bit Position

7

6

5

4

3

2

1

0

Access

r

Function

Exponent

Mantissa

Default Value

1

0

Bit Position

7

6

5

4

3

2

1

0

Access

r

r/w

Function

Mantissa

Default Value

0

1

0

1

0

YES

38 IOUT_CAL_GAIN

Returns the value of the gain correction term used to correct the measured

output current

Format

Linear, two’s complement binary

Bit Position

7

6

5

4

3

2

1

0

Access

r

r/w

Function

Exponent

Mantissa

Default Value

1

0

1

0

V

Bit Position

7

6

5

4

3

2

1

0

Access

r/w

Function

Mantissa

Default Value

V: Variable based on factory calibration

YES

39 IOUT_CAL_OFFSET

Returns the value of the offset correction term used to correct the measured

output current

Format

Linear, two’s complement binary

Bit Position

7

6

5

4

3

2

1

0

Access

r

r/w

r

Function

Exponent

Mantissa

Default Value

1

0

V

0

Bit Position

7

6

5

4

3

2

1

0

Access

r

r/w

Function

Mantissa

Default Value

0

V: Variable based on factory calibration

YES

40 VOUT_OV_FAULT_LIMIT

Sets the voltage level for an output overvoltage fault. Exponent is fixed at -10.

Suggested value shown for 1.2Vo. Should be changed for different output

voltage. Values can be 108%, 110%, 112% or 115% of output voltage

Format

Linear, two’s complement binary

Bit Position

7

6

5

4

3

2

1

0

Access

r

r/w

Function

High Byte

Default Value

0

1

0

1

Bit Position

7

6

5

4

3

2

1

0

Access

r/w

Function

Low Byte

Default Value

0

1

0

YES

41 VOUT_OV_FAULT_RESPONSE

Instructs the module on what action to take in response to a output overvoltage

fault

Format

Unsigned Binary

Bit Position

7

6

5

4

3

2

1

0

Access

r/w

r

Function

RSP

[1]

RSP

[0]

RS[2] RS[1] RS[0] X X X

Default Value

1

0

YES

GE

Data Sheet

12A Digital PicoDLynx

TM

: Non-Isolated DC-DC Power Modules

3Vdc –14.4Vdc input; 0.45Vdc to 5.5Vdc output; 12A Output Current

Table 6 (continued)

Hex

Code

Command Brief Description

Non-Volatile

Memory Storage

44 VOUT_UV_FAULT_LIMIT

Sets the voltage level for an output undervoltage fault. Exponent is fixed at -10.

Suggested value shown for 1.2Vo. Should be changed for different output

voltage. Values can be 92%, 90%, 88% or 85% of output voltage

Format

Linear, two’s complement binary

Bit Position

7

6

5

4

3

2

1

0

Access

r

r/w

Function

High Byte

Default Value

0

1

0

Bit Position

7

6

5

4

3

2

1

0

Access

r/w

Function

Low Byte

Default Value

0

1

0

1

YES

45 VOUT_UV_FAULT_RESPONSE

Instructs the module on what action to take in response to a output

undervoltage fault

Format

Unsigned Binary

Bit Position

7

6

5

4

3

2

1

0

Access

r/w

r

Function

RSP

[1]

RSP

[0]

RS[2] RS[1] RS[0] X X X

Default Value

0

1

0

YES

46 IOUT_OC_FAULT_LIMIT

Sets the output overcurrent fault level in A (cannot be changed)

Format

Linear, two’s complement binary

Bit Position

7

6

5

4

3

2

1

0

Access

r

Function

Exponent

Mantissa

Default Value

1

0

Bit Position

7

6

5

4

3

2

1

0

Access

r

Function

Mantissa

Default Value

0

1

YES

4A IOUT_OC_WARN_LIMIT

Sets the output overcurrent warning level in A

Format

Linear, two’s complement binary

Bit Position

7

6

5

4

3

2

1

0

Access

r

Function

Exponent

Mantissa

Default Value

1

0

Bit Position

7

6

5

4

3

2

1

0

Access

r

r/w

Function

Mantissa

Default Value

0

1

0

1

YES

5E POWER_GOOD_ON

Sets the output voltage level at which the PGOOD pin is asserted high. Exponent

is fixed at -10.

Format

Linear, two’s complement binary

Bit Position

7

6

5

4

3

2

1

0

Access

r

r/w

Function

High Byte

Default Value

0

1

0

Bit Position

7

6

5

4

3

2

1

0

Access

r/w

Function

Low Byte

Default Value

0

1

0

1

0

1

0

YES

GE

Data Sheet

12A Digital PicoDLynx

TM

: Non-Isolated DC-DC Power Modules

3Vdc –14.4Vdc input; 0.45Vdc to 5.5Vdc output; 12A Output Current

Table 6 (continued)

Hex

Code Command Brief Description Non-Volatile

Memory Storage

5F POWER_GOOD_OFF

Sets the output voltage level at which the PGOOD pin is de-asserted low.

Exponent is fixed at -10.

Format

Linear, two’s complement binary

Bit Position

7

6

5

4

3

2

1

0

Access

r

r/w

Function

High Byte

Default Value

0

1

0

Bit Position

7

6

5

4

3

2

1

0

Access

r/w

Function

Low Byte

Default Value

0

1

0

1

0

1

0

YES

61 TON_RISE

Sets the rise time of the output voltage during startup

Format

Linear, two’s complement binary

Bit Position

7

6

5

4

3

2

1

0

Access

r

r/w

Function

Exponent

Mantissa

Default Value

1

0

Bit Position

7

6

5

4

3

2

1

0

Access

r/w

Function

Mantissa

Default Value

0

1

0

1

0

1

YES

78 STATUS_BYTE

Returns one byte of information with a summary of the most critical module

faults

Format

Unsigned Binary

Bit Position

7

6

5

4

3

2

1

0

Access

r

Flag X OFF

VOUT

_OV

IOUT_

OC

VIN_U

V

TEMP CML

OTHE

R

Default Value

0

79 STATUS_WORD

Returns two bytes of information with a summary of the module’s fault/warning

conditions

Format

Unsigned Binary

Bit Position

7

6

5

4

3

2

1

0

Access

r

Flag VOUT

IOUT_

OC

X X

PGOO

D

X X X

Default Value

0

Bit Position

7

6

5

4

3

2

1

0

Access

r

Flag X OFF

VOUT

_OV

IOUT_

OC

VIN_U

V

TEMP CML

OTHE

R

Default Value

0

7A STATUS_VOUT

Returns one byte of information with the status of the module’s output voltage

related faults

Format

Unsigned Binary

Bit Position

7

6

5

4

3

2

1

0

Access

r

Flag

VOUT_OV

X

VOUT_UV

X

Default Value

0

7B STATUS_IOUT

Returns one byte of information with the status of the module’s output current

related faults

Format

Unsigned Binary

Bit Position

7

6

5

4

3

2

1

0

Access

r

Flag

IOUT_OC

X

IOUT_OC_WARN

X

Default Value

0

GE

Data Sheet

12A Digital PicoDLynx

TM

: Non-Isolated DC-DC Power Modules

3Vdc –14.4Vdc input; 0.45Vdc to 5.5Vdc output; 12A Output Current

Table 6 (continued)

Hex

Code

Command Brief Description

Non-Volatile

Memory Storage

7D STATUS_TEMPERATURE

Returns one byte of information with the status of the module’s temperature

related faults

Format

Unsigned Binary

Bit Position

7

6

5

4

3

2

1

0

Access

r

Flag

OT_FAULT

OT_WARN

X

Default Value

0

7E STATUS_CML

Returns one byte of information with the status of the module’s communication

related faults

Format

Unsigned Binary

Bit Position

7

6

5

4

3

2

1

0

Access

r

Flag Invalid

Command

Invalid

Data

PEC

Fail X X X

Other

Comm

Fault

X

Default Value

0

88 READ_VIN

Returns the value of the input voltage applied to the module

Format

Linear, two’s complement binary

Bit Position

7

6

5

4

3

2

1

0

Access

r

Function

Exponent

Mantissa

Default Value

1

0

1

0

Bit Position

7

6

5

4

3

2

1

0

Access

r

Function

Mantissa

Default Value

0

8B READ_VOUT

Returns the value of the output voltage of the module. Exponent is fixed at -10.

Format

Linear, two’s complement binary

Bit Position

7

6

5

4

3

2

1

0

Access

r

Function

Mantissa

Default Value

0

Bit Position

7

6

5

4

3

2

1

0

Access

r

Function

Mantissa

Default Value

0

8C READ_IOUT

Returns the value of the output current of the module

Format

Linear, two’s complement binary

Bit Position

7

6

5

4

3

2

1

0

Access

r

Function

Exponent

Mantissa

Default Value

1

0

Bit Position

7

6

5

4

3

2

1

0

Access

r

Function

Mantissa

Default Value

0

98 PMBUS_REVISION

Returns one byte indicating the module is compliant to PMBus Spec. 1.1 (read

only)

Format

Unsigned Binary

Bit Position

7

6

5

4

3

2

1

0

Access

r

Default Value

0

1

0

1

YES

GE

Data Sheet

12A Digital PicoDLynx

TM

: Non-Isolated DC-DC Power Modules

3Vdc –14.4Vdc input; 0.45Vdc to 5.5Vdc output; 12A Output Current

Table 6 (continued)

Hex

Code

Command Brief Description

Non-Volatile

Memory Storage

A0 MFR_VIN_MIN

Returns the minimum input voltage the module is specified to operate at (read only)

Format

Linear, two’s complement binary

Bit Position

7

6

5

4

3

2

1

0

Access

r

Function

Exponent

Mantissa

Default Value

1

0

Bit Position

7

6

5

4

3

2

1

0

Access

r

Function

Mantissa

Default Value

0

1

0

YES

A4 MFR_VOUT_MIN

Returns the minimum output voltage possible from the module (read only)

Format

Linear, two’s complement binary

Bit Position

7

6

5

4

3

2

1

0

Access

r

Function

Mantissa

Default Value

0

1

0

Bit Position

7

6

5

4

3

2

1

0

Access

r

Function

Mantissa

Default Value

0

1

0

1

0

YES

D0 MFR_SPECIFIC_00

Returns module name information (read only)

Format

Unsigned Binary

Bit Position

7

6

5

4

3

2

1

0

Access

r

Function

Reserved

Default Value

0

Bit Position

7

6

5

4

3

2

1

0

Access

r

Function

Module Name

Reserved

Default Value

0

1

0

YES

D4 VOUT_CAL_OFFSET

Applies an offset to the READ_VOUT command results to calibrate out offset errors in

module measurements of the output voltage (between -125mV and +124mV).

Exponent is fixed at -10.

Format

Linear, two’s complement binary

Bit Position

7

6

5

4

3

2

1

0

Access

r/w

r

Function

Mantissa

Default Value

V

0

Bit Position

7

6

5

4

3

2

1

0

Access

r

r/w

Function

Mantissa

Default Value

V

YES

D5 VOUT_CAL_GAIN

Applies a gain correction to the READ_VOUT command results to calibrate out gain

errors in module measurements of the output voltage (between -0.125 and 0.121)

Format

Linear, two’s complement binary

Bit Position

7

6

5

4

3

2

1

0

Access

r

r/w

r

Function

Exponent

Mantissa

Default Value

1

0

V

Bit Position

7

6

5

4

3

2

1

0

Access

r

r/w

Function

Mantissa

Default Value

V

YES

GE

Data Sheet

12A Digital PicoDLynx

TM

: Non-Isolated DC-DC Power Modules

3Vdc –14.4Vdc input; 0.45Vdc to 5.5Vdc output; 12A Output Current

Table 6 (continued)

Hex

Code Command Brief Description

Non-Volatile

Memory

Storage

D6 VIN_CAL_OFFSET

Applies an offset correction to the READ_VIN command results to calibrate out offset

errors in module measurements of the input voltage (between -2V and +1.968V)

Format

Linear, two’s complement binary

Bit Position

7

6

5

4

3

2

1

0

Access

r

r/w

r

Function

Exponent

Mantissa

Default Value

1

0

1

V

0

V

Bit Position

7

6

5

4

3

2

1

0

Access

r

r/w

Function

Mantissa

Default Value

0

V

YES

D7 VIN_CAL_GAIN

Applies a gain correction to the READ_VIN command results to calibrate out gain

errors in module measurements of the input voltage (between -0.125 and 0.121)

Format

Linear, two’s complement binary

Bit Position

7

6

5

4

3

2

1

0

Access

r

r/w

r

Function

Exponent

Mantissa

Default Value

1

0

V

0

V

Bit Position

7

6

5

4

3

2

1

0

Access

r

r/w

Function

Mantissa

Default Value

0

V

YES

GE

Data Sheet

12A Digital PicoDLynx

TM

: Non-Isolated DC-DC Power Modules

3Vdc –14.4Vdc input; 0.45Vdc to 5.5Vdc output; 12A Output Current

Thermal Considerations

Power modules operate in a variety of thermal environments;

however, sufficient cooling should always be provided to help

ensure reliable operation.

Considerations include ambient temperature, airflow, module

power dissipation, and the need for increased reliability. A

reduction in the operating temperature of the module will

result in an increase in reliability. The thermal data

presented here is based on physical measurements taken in

a wind tunnel. The test set-up is shown in Figure 49. The

preferred airflow direction for the module is in Figure 50.

Air

flow

x

Power Module

Wind Tunnel

PWBs

12.7_

(0.50)

76.2_

(3.0)

Probe Location

for measuring

airflow and

ambient

temperature

25.4_

(1.0)

Figure 49. Thermal Test Setup.

The thermal reference points, Tref used in the specifications

are also shown in Figure 50. For reliable operation the

temperatures at these points should not exceed 120oC. The

output power of the module should not exceed the rated

power of the module (Vo,set x Io,max).

Please refer to the Application Note “Thermal

Characterization Process For Open-Frame Board-Mounted

Power Modules” for a detailed discussion of thermal

aspects including maximum device temperatures.

Figure 50. Preferred airflow direction and location of hot-

spot of the module (Tref).

GE

Data Sheet

12A Digital PicoDLynx

TM

: Non-Isolated DC-DC Power Modules

3Vdc –14.4Vdc input; 0.45Vdc to 5.5Vdc output; 12A Output Current

Shock and Vibration

The ruggedized (-D version) of the modules are designed to withstand elevated levels of shock and vibration to be able to operate in

harsh environments. The ruggedized modules have been successfully tested to the following conditions:

Non operating random vibration:

Random vibration tests conducted at 25C, 10 to 2000Hz, for 30 minutes each level, starting from 30Grms (Z axis) and up to 50Grms

(Z axis). The units were then subjected to two more tests of 50Grms at 30 minutes each for a total of 90 minutes.

Operating shock to 40G per Mil Std. 810F, Method 516.4 Procedure I:

The modules were tested in opposing directions along each of three orthogonal axes, with waveform and amplitude of the shock

impulse characteristics as follows:

All shocks were half sine pulses, 11 milliseconds (ms) in duration in all 3 axes.

Units were tested to the Functional Shock Test of MIL-STD-810, Method 516.4, Procedure I - Figure 516.4-4. A shock magnitude of

40G was utilized. The operational units were subjected to three shocks in each direction along three axes for a total of eighteen

shocks.

Operating vibration per Mil Std 810F, Method 514.5 Procedure I:

The ruggedized (-D version) modules are designed and tested to vibration levels as outlined in MIL-STD-810F, Method 514.5, and

Procedure 1, using the Power Spectral Density (PSD) profiles as shown in Table 7 and Table 8 for all axes. Full compliance with

performance specifications was required during the performance test. No damage was allowed to the module and full compliance

to performance specifications was required when the endurance environment was removed. The module was tested per MIL-STD-

810, Method 514.5, Procedure I, for functional (performance) and endurance random vibration using the performance and

endurance levels shown in Table 7 and Table 8 for all axes. The performance test has been split, with one half accomplished before

the endurance test and one half after the endurance test (in each axis). The duration of the performance test was at least 16

minutes total per axis and at least 120 minutes total per axis for the endurance test. The endurance test period was 2 hours

minimum per axis.

Table 7: Performance Vibration Qualification - All Axes

Frequency (Hz) PSD Level

(G2/Hz) Frequency (Hz) PSD Level

(G2/Hz)

10

1.14E-03

170

2.54E-03

690

1.03E-03

30

5.96E-03

230

3.70E-03

800

7.29E-03

40

9.53E-04

290

7.99E-04

890

1.00E-03

50

2.08E-03

340

1.12E-02

1070

2.67E-03

90

2.08E-03

370

1.12E-02

1240

1.08E-03

110

7.05E-04

430

8.84E-04

1550

2.54E-03

130

5.00E-03

490

1.54E-03

1780

2.88E-03

140

8.20E-04

560

5.62E-04

2000

5.62E-04

Table 8: Endurance Vibration Qualification - All Axes

Frequency (Hz)

PSD Level

(G2/Hz) Frequency (Hz)

PSD Level

(G2/Hz) Frequency (Hz)

PSD Level

(G2/Hz)

10

0.00803

170

0.01795

690

0.00727

30

0.04216

230

0.02616

800

0.05155

40

0.00674

290

0.00565

890

0.00709

50

0.01468

340

0.07901

1070

0.01887

90

0.01468

370

0.07901

1240

0.00764

110

0.00498

430

0.00625

1550

0.01795

130

0.03536

490

0.01086

1780

0.02035

140

0.0058

560

0.00398

2000

0.00398

GE

Data Sheet

12A Digital PicoDLynx

TM

: Non-Isolated DC-DC Power Modules

3Vdc –14.4Vdc input; 0.45Vdc to 5.5Vdc output; 12A Output Current

Example Application Circuit

Requirements:

Vin: 12V

Vout: 1.8V

Iout: 9A max., worst case load transient is from 6A to 9A

∆

Vout: 1.5% of Vout (27mV) for worst case load transient

Vin, ripple 1.5% of Vin (180mV, p-p)

CI1 Decoupling cap - 1x0.047µF/16V ceramic capacitor (e.g. Murata LLL185R71C473MA01)

CI2 2x22µF/16V ceramic capacitor (e.g. Murata GRM32ER61C226KE20)

CI3 470µF/16V bulk electrolytic

CO1 Decoupling cap - 1x0.047µF/16V ceramic capacitor (e.g. Murata LLL185R71C473MA01)

CO2 2 x 47µF/6.3V ceramic capacitor (e.g. Murata GRM31CR60J476ME19)

CO3 1 x 330µF/6.3V Polymer (e.g. Sanyo Poscap)

CTune 3300pF ceramic capacitor (can be 1206, 0805 or 0603 size)

RTune 270 ohms SMT resistor (can be 1206, 0805 or 0603 size)

RTrim 10kΩ SMT resistor (can be 1206, 0805 or 0603 size, recommended tolerance of 0.1%)

Note: The DATA, CLK and SMBALRT pins do not have any pull-up resistors inside the module. Typically, the SMBus master

controller will have the pull-up resistors as well as provide the driving source for these signals.

RADDR0

DATA

SEQ

VS-

RADDR1

GND

Vin+

CI3

CO3

ADDR0

VOUT

VS+

GND

TRIM

CTUNE

RTUNE

RTrim

VIN

CO1

CI1

Vout+

ON/OFF

CLK

SMBALRT#

MODULE

PGOOD

ADDR1

SIG_GND

SYNC

CI2

CO2

GE

Data Sheet

12A Digital PicoDLynx

TM

: Non-Isolated DC-DC Power Modules

3Vdc –14.4Vdc input; 0.45Vdc to 5.5Vdc output; 12A Output Current

Mechanical Outline

Dimensions are in millimeters and (inches).

Tolerances: x.x mm ± 0.5 mm (x.xx in. ± 0.02 in.) [unless otherwise indicated]

x.xx mm ± 0.25 mm (x.xxx in ± 0.010 in.)

FUNCTION

1 ON/OFF 10 PGOOD

2 VIN 11 SYNC

3 GND 12 VS-

4 VOUT 13 SIG. GND

5 VS+ (SENSE) 14 SMBALERT#

6 TRIM 15 DATA

7 GND 16 ADDR0

8 CLK 17 ADDR1

9 SEQ

PIN 7

GE

Data Sheet

12A Digital PicoDLynx

TM

: Non-Isolated DC-DC Power Modules

3Vdc –14.4Vdc input; 0.45Vdc to 5.5Vdc output; 12A Output Current

Recommended Pad Layout

Dimensions are in millimeters and (inches).

Tolerances: x.x mm ± 0.5 mm (x.xx in. ± 0.02 in.) [unless otherwise indicated]

x.xx mm ± 0.25 mm (x.xxx in ± 0.010 in.)

2 If unused, connect to Ground

FUNCTION

1

ON/OFF

10

PGOOD

2

VIN

11

SYNC2

3 GND 12 VS-

4 VOUT 13 SIG_GND

5

VS+ (SENSE)

14

SMBALERT#

6

TRIM

15

DATA

7

GND

16

ADDR0

8 CLK 17 ADDR1

9

SEQ

7

GE

Data Sheet

12A Digital PicoDLynx

TM

: Non-Isolated DC-DC Power Modules

3Vdc –14.4Vdc input; 0.45Vdc to 5.5Vdc output; 12A Output Current

Packaging Details

The 12V Digital PicoDLynxTM 12A modules are supplied in tape & reel as standard. Modules are shipped in quantities of 200

modules per reel.

All Dimensions are in millimeters and (in inches).

Reel Dimensions:

Outside Dimensions: 330.2 mm (13.00)

Inside Dimensions: 177.8 mm (7.00”)

Tape Width: 24.00 mm (0.945”)

GE

Data Sheet

12A Digital PicoDLynx

TM

: Non-Isolated DC-DC Power Modules

3Vdc –14.4Vdc input; 0.45Vdc to 5.5Vdc output; 12A Output Current

Surface Mount Information

Pick and Place

The 12A Digital PicoDLynxTM modules use an open frame

construction and are designed for a fully automated

assembly process. The modules are fitted with a label

designed to provide a large surface area for pick and place

operations. The label meets all the requirements for surface

mount processing, as well as safety standards, and is able to

withstand reflow temperatures of up to 300oC. The label also

carries product information such as product code, serial

number and the location of manufacture.

Nozzle Recommendations

The module weight has been kept to a minimum by using

open frame construction. Variables such as nozzle size, tip

style, vacuum pressure and placement speed should be

considered to optimize this process. The minimum

recommended inside nozzle diameter for reliable operation is

3mm. The maximum nozzle outer diameter, which will safely

fit within the allowable component spacing, is 7 mm.

Bottom Side / First Side Assembly

This module is not recommended for assembly on the

bottom side of a customer board. If such an assembly is

attempted, components may fall off the module during the

second reflow process.

Lead Free Soldering

The modules are lead-free (Pb-free) and RoHS compliant and

fully compatible in a Pb-free soldering process. Failure to

observe the instructions below may result in the failure of or

cause damage to the modules and can adversely affect

long-term reliability.

Pb-free Reflow Profile

Power Systems will comply with J-STD-020 Rev. D

(Moisture/Reflow Sensitivity Classification for Nonhermetic

Solid State Surface Mount Devices) for both Pb-free solder

profiles and MSL classification procedures. This standard

provides a recommended forced-air-convection reflow

profile based on the volume and thickness of the package

(table 4-2). The suggested Pb-free solder paste is Sn/Ag/Cu

(SAC). The recommended linear reflow profile using Sn/Ag/Cu

solder is shown in Fig. 51. Soldering outside of the

recommended profile requires testing to verify results and

performance.

MSL Rating

The 12A Digital PicoDLynxTM modules have a MSL rating of 2a

Storage and Handling

The recommended storage environment and handling

procedures for moisture-sensitive surface mount packages is

detailed in J-STD-033 Rev. A (Handling, Packing, Shipping and

Use of Moisture/Reflow Sensitive Surface Mount Devices).

Moisture barrier bags (MBB) with desiccant are required for

MSL ratings of 2 or greater. These sealed packages should

not be broken until time of use. Once the original package is

broken, the floor life of the product at conditions of ≤ 30°C

and 60% relative humidity varies according to the MSL rating

(see J-STD-033A). The shelf life for dry packed SMT packages

will be a minimum of 12 months from the bag seal date,

when stored at the following conditions: < 40° C, < 90%

relative humidity.

Figure 51. Recommended linear reflow profile using

Sn/Ag/Cu solder.

Post Solder Cleaning and Drying Considerations

Post solder cleaning is usually the final circuit-board

assembly process prior to electrical board testing. The result

of inadequate cleaning and drying can affect both the

reliability of a power module and the testability of the

finished circuit-board assembly. For guidance on

appropriate soldering, cleaning and drying procedures, refer

to Board Mounted Power Modules: Soldering and Cleaning

Application Note (AN04-001).

GE

Data Sheet

12A Digital PicoDLynx

TM

: Non-Isolated DC-DC Power Modules

3Vdc –14.4Vdc input; 0.45Vdc to 5.5Vdc output; 12A Output Current

Contact Us

For more information, call us at

USA/Canada:

+1 888 546 3243, or +1 972 244 9288

Asia-Pacific:

+86.021.54279977*808

Europe, Middle-East and Africa:

+49.89.878067-280

www.gecriticalpower.com

GE Critical Power reserves the right to make changes to the product(s) or information contained herein without notice, and no

liability is assumed as a result of their use or application. No rights under any patent accompany the sale of any such product(s)

or information.

Ordering Information

Please contact your GE Sales Representative for pricing, availability and optional features.

Table 9. Device Codes

Device Code Input

Voltage Range

Output

Voltage

Output

Current

On/Off

Logic Sequencing Comcodes

PDT012A0X3-SRZ 3 – 14.4Vdc 0.45 – 5.5Vdc 12A Negative Yes CC109159661

PDT012A0X3-SRDZ 3 – 14.4Vdc 0.45 – 5.5Vdc 12A Negative Yes CC109168836

PDT012A0X43-SRZ 3 – 14.4Vdc 0.45 – 5.5Vdc 12A Positive Yes CC109159678

PDT012A0X43-SRDZ 3 – 14.4Vdc 0.45 – 5.5Vdc 12A Positive Yes CC109168844

-Z refers to RoHS compliant parts

Table 10. Coding Scheme

GE Digital Non-Isolated DC-DC products use technology licensed from Power-One, protected by US patents: US20040246754, US2004090219A1, US2004093533A1, US2004123164A1,

US2004123167A1, US2004178780A1, US2004179382A1, US20050200344, US20050223252, US2005289373A1, US20060061214, US2006015616A1, US20060174145, US20070226526,

US20070234095, US20070240000, US20080052551, US20080072080, US20080186006, US6741099, US6788036, US6936999, US6949916, US7000125, US7049798, US7068021, US7080265,

US7249267, US7266709, US7315156, US7372682, US7373527, US7394445, US7456617, US7459892, US7493504, US7526660.

Outside the US the Power-One licensed technology is protected by patents: AU3287379AA, AU3287437AA, AU3290643AA, AU3291357AA, CN10371856C, CN1045261OC, CN10458656C,

CN10459360C, CN10465848C, CN11069332A, CN11124619A, CN11346682A, CN1685299A, CN1685459A, CN1685582A, CN1685583A, CN1698023A, CN1802619A, EP1561156A1, EP1561268A2,

EP1576710A1, EP1576711A1, EP1604254A4, EP1604264A4, EP1714369A2, EP1745536A4, EP1769382A4, EP1899789A2, EP1984801A2, W004044718A1, W004045042A3, W004045042C1,

W004062061 A1, W004062062A1, W004070780A3, W004084390A3, W004084391A3, W005079227A3, W005081771A3, W006019569A3, W02007001584A3, W02007094935A3

Package

Identifier

Family

Sequencing

Option

Output

current

Output

voltage

On/Off

logic

Remote

Sense Options

ROHS Compliance

P D T 012A0 X 3 -SR -D Z

P=Pico

U=Micro

M=Mega

G=Giga

D=Dlynx

Digital

V =

DLynx

Analog.

T=with EZ

Sequence

X=without

sequencing

12A X =

programm

able output

4 =

positive

No entry

=

negative

3 =

Remote

Sense

S =

Surface

Mount

R =

Tape &

Reel

D = 105°C

operating

ambient,

40G

operating

shock as

per MIL Std

810F

Z = ROHS6