Data Sheet
March 27, 2008
JBW030-Series Power Module: dc-dc Converters
36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W
The JBW030-Series Power Modules use advanced, surface-
mount technology and deliver high-quality, compact,
dc-dc conversion at an economical price.
Features
nSmall size: 61.0 mm x 57.9 mm x 12.7 mm
(2.40 in. x 2.28 in. x 0.50 in.)
nLow output noise
nConstant frequency
nIndustry-standar d pin o ut
nMetal case
nCase ground pin
n2:1 input voltage range
nOvercurrent protection
nOutput overvoltage protection
nRemote on/off
nRemote sense
nAdjustable output voltage: 80% to 110% of VO, nom
nUL* 60950 Recognized, CSA† C22.2 No. 60950-
00 Certified, and EN 60950 (VDE08 05):2001-12
Licensed
nCE mark meets 73/23 /EEC and 93/68/EEC
directives‡
nWithin FCC Class A radiated limits
Description
The JBW030-Series Power Modules are dc-dc converte rs that operate over an input volt age range of 36 Vdc to
75 Vdc and provide precisely regulated outputs. The outputs are isolated from the input s, allowing versatile
polarity configuration s and groundin g connections. The m odules have ma ximum power r atings of up to 30 W at
a typical full-load efficiency of up to 82% (5 Vout).
These power modules featu re remote on/off, remote sense, and output voltage adjustment, (80% to 110% of
the nominal output voltage). The modules are PC board-mountable, encap sulated in meta l cases, and are rated
to full load at 100 °C case temperature. No external filtering is required.
*UL is a registered trademark of Underwriters Laboratories, Inc.
†CSA is a registered trademark of Canadian Standards Association.
‡ This product is intended for integration into end-use equipment. All the required procedures for CE marking of end-use equipment should
be followed. (The CE mark is placed on selected products.)
Applications
nDistributed power architectures
nCommunications equipment
nWorkstations / Computer equipment
Options
nHeat sinks available for extended oper ation
nChoice of remote on/off logic configuration
nShort pins: 2.79 mm ± 0.25 mm
(0.110 in. ± 0.010 in.)
nShort pins: 3.68 mm ± 0.25 mm
(0.145 in. ± 0.010 in.)
2Lineage Power
Data Sheet
March 27, 2008
36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W
JBW030-Series Power Module: dc-dc Converters
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause pe rma nent da mag e to the d evice . These are abso-
lute 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 device reliability.
Electrical Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature
conditions.
Table 1. Input Specifications
Fusing Considerations
CAUTION: This power module is not internally fused. An input line fuse must always be used.
This encapsulated power module can be used in a wide variety of applications, ranging from simple stand-alone
operation to an integrated part of a sophisticated power architecture. To preserve maximum flexibility, internal fus-
ing is not included; however, to achieve maximum safety an d system protection, always use an input line fuse. Th e
safety agencies require a fast-acting fuse with a maximum rating of 5 A (see Safety Considerations section). Based
on the information provided in this data sheet on inrush energy and maximum dc input current, the same type of
fuse with a lower rating can be used. Refer to the fuse manufacturer’s dat a for further information.
Parameter Symbol Min Max Unit
Input Voltage Continuous VI—80Vdc
Operating Case Temperature
(See Thermal Considerations section.) TC–40 100 °C
Storage Temperature Tstg –40 110 °C
I/O Isolation Voltage:
Continuous
Tr ansient —
——
—500
1500 Vdc
Vdc
Parameter Symbol Min Typ Max Unit
Operating Input Voltage VI36 48 75 Vdc
Maximum Input Current
(VI = 0 V to 75 V; IO = IO, max; see Figure 1.) II, max ——1.6A
Inrush Transient i2t——0.2A
2s
Input Reflected-ripple Current, Peak-to-peak
(5 Hz to 20 MHz, 12 µH source impedance;
TC = 25 °C; see Figure 11 and Design
Considerations section.)
II—25—mAp-p
Input Ripple Rejection (120 Hz) — — 50 — dB
Lineage Power 3
Data Sheet
March 27, 2008 36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W
JBW030-Series Power Module: dc-dc Converters
Electrical Specifications (continued)
Table 2. Output Specifications
Parameter Device Code or
Code Suffix Symbol Min Typ Max Unit
Output Voltage Set Point
(VI = 48 V; IO = IO, max; TC = 25 °C) JBW030F
JBW030A VO, set
VO, set 3.25
4.95 3.3
5.0 3.35
5.05 Vdc
Vdc
Output Voltage
(Over all operating input voltage,
resistive load, and temperature
conditions until end of life. See
Figure 13.)
JBW030F
JBW030A VO
VO3.20
4.85 —
—3.40
5.15 Vdc
Vdc
Output Regulation:
Line (VI = 36 V to 75 V)
Load (IO = IO, min to IO, max)
Temperature
(TC = –40 °C to +100 °C)
All
All
JBW030F
JBW030A
—
—
—
—
—
—
—
—
0.01
0.05
0.75
0.5
0.1
0.2
1.5
1.5
%VO
%VO
%VO
%VO
Output Ripple and Noise Voltage
(See Figure 12.):
RMS
Peak-to-peak (5 Hz to 20 MHz) All
All —
——
——
—20
150 mVrms
mVp-p
Output Current
(At IO < IO, min, the modules may
exceed output ripple specifications;
see Figures 2 an d 3.)
JBW030F
JBW030A IO
IO0.6
0.6 —
—6.5
6.0 A
A
Output Current-limit Inception
(VO = 90% of VO, nom)JBW030F
JBW030A IO
IO—
—8.5
8.0 —
—A
A
Output Short-circuit Current
(VO = 250 mV) JBW030F
JBW030A —
——
—10.0
9.5 13
12.5 A
A
Efficiency
(VI = 48 V; IO = IO, max; TC = 25 °C;
see Figures 4, 5 and 13.)
JBW030F
JBW030A η
η75
79 78
82 —
—%
%
Switching Frequency All — — 300 — kHz
Dynamic Response
(ΔIO/Δt = 1 A/10 µs, VI = 48 V,
TC = 25 °C; see Figures 6 — 9.):
Load Change from IO = 50% to 75%
of IO, max:
Peak Deviation
Settling Time
(VO < 10% peak deviation)
Load Change from IO = 50% to 25%
of IO, max:
Peak Deviation
Settling Time
(VO < 10% of peak deviation)
JBW030F
JBW030A
All
JBW030F
JBW030A
All
—
—
—
—
—
—
—
—
—
—
—
—
5
2
0.5
5
2
0.5
—
—
—
—
—
—
%VO, set
%VO, set
ms
%VO, set
%VO, set
ms
44 Lineage Power
Data Sheet
March 27, 2008
36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W
JBW030-Series Power Module: dc-dc Converters
Electrical Specifications (continued)
Table 3. Isolation Specifications
General Specifications
Feature Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature
conditions. See Feature Descriptions and Design Considerations for further information.
Parameter Min Typ Max Unit
Isolation Capacitance — 2500 — pF
Isolation Resistance 10 — — MΩ
Parameter Min Typ Max Unit
Calculated MTBF (IO = 80% of IO, max; TC = 40 °C) 4,370,000 hours
Weight — — 113 (4.0) g (oz.)
Parameter Device Code or
Code Suffix Symbol Min Typ Max Unit
Remote On/Off
(VI = 36 V to 75 V; open collector or
equivalent comp atible; signal referenced to
VI(–) terminal. See Figure 14 and Feature
Descriptions.):
JW030x1-M Negative Lo gic:
Logic Low—Module On
Logic High—Module Off
JW030x-M Positive Logic:
Logic Low—Module Off
Logic High—Module On
Module Specifications:
On/Off Current—Logic Low
On/Off Voltage:
Logic Low
Logic High (Ion/off = 0)
Open Collector Switch Specifications:
Leakage Current During Logic High
(Von/off = 10 V)
Output Low Voltage During Logic Low
(Ion/off = 1 mA)
Turn-on Time (@ 80% of IO, max;
TA = 25 °C; VO within ±1% of steady
state; see Figure 10.)
Output Voltage Overshoot
All
All
All
All
All
All
All
Ion/off
Von/off
Von/off
Ion/off
Von/off
—
—
—
–0.7
—
—
—
—
—
—
—
—
—
—
80
0
1.0
1.2
15
50
1.2
150
5
mA
V
V
µA
V
ms
%
Output Voltage Sense Range All — — — 10 %VO, nom
Output V oltage Set-point Adjustment Range
(See Feature Descriptions.) All — 80 — 110 %VO, nom
Output Overvoltage Protection (clamp) JBW030F
JBW030A VO, clamp
VO, clamp 4.0
5.6 —
—5.7
7.0 V
V
Lineage Power 5
Data Sheet
March 27, 2008 36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W
JBW030-Series Power Module: dc-dc Converters
Characteristic Curves
1-0763
Figure 1. Typical Input Characteristics
1-0727
Figure 2. JBW030A Typical Output Characteristics
1-0726
Figure 3. JBW030F Typical Output Characteristics
1-0760
Figure 4. JBW030F Typical Converter Efficiency
vs. Output Current
0
0.2
0.4
0.6
0.8
1
1.2
30 35 40 45 50 55 60 65 70 7
5
INPUT VOLTAGE, V
I
(V)
INPUT CURRENT, I
I
(A)
I
O
= 6 A
I
O
= 3 A
I
O
= 0.5 A
0
1
2
3
4
5
6
024681
0
OUTPUT CURRENT, I
O
(A)
OUTPUT VOLTAGE, V
O
(V)
V
I
= 36 V
V
I
= 48 V
V
I
= 75 V
0
0.5
1
1.5
2
2.5
3
3.5
0123456789101
1
OUTPUT CURRENT, I
O
(A)
OUTPUT VOLTAGE, V
O
(V)
V
I
= 36 V
V
I
= 48 V
V
I
= 75 V
50
55
60
65
70
75
80
85
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6
.5
OUTPUT CURRENT, I
O
(A)
EFFICIENCY, η (%)
V
I
= 36 V
V
I
= 48 V
V
I
= 75 V
6Lineage Power
Data Sheet
March 27, 2008
36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W
JBW030-Series Power Module: dc-dc Converters
Characteristic Curves (continued)
1-0878
Figure 5. JBW030ATypical Converter Efficiency
vs. Output Current
1-0879
Figure 6. JBW030F Typical Output Voltage for a
Step Load Change from 50% to 75%
1-0880
Figure 7. JBW030A Typical Output Voltage for a
Step Load Change from 50% to 75%
1-0881
Figure 8. JBW030F Typical Output Voltage for a
Step Load Change from 50% to 25%
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
012345
6
OUTPUT CURRENT, IO (A)
EFFICIENCY η (%)
VI = 36 V
VI = 48 V
VI = 75 V
TIME, t (0.2 ms/div)
OUTPUT CURRENT,
I
O
(2 A/div)
OUTPUT VOLTAGE,
V
O
(50 mV/div)
TIME, t (0.2 ms/div)
OUTPUT CURRENT,
I
O
(2 A/div)
OUTPUT VOLTAGE,
V
O
(50 mV/div)
TIME, t (0.2 ms/div)
OUTPUT CURRENT,
I
O
(2 A/div)
OUTPUT VOLTAGE,
V
O
(50 mV/div)
Lineage Power 7
Data Sheet
March 27, 2008 36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W
JBW030-Series Power Module: dc-dc Converters
Characteristic Curves (continued)
1-0882
Figure 9. JBW030A Typical Output Voltage for a
Step Load Change from 50% to 25%
8-733a
Figure 10. Typical Output Voltage Start-Up when
Signal Applied to Remote On/Off
Test Configurations
8-489(C)
Note: Input reflected-ripple current is measured with a simulated
source impedance of 12 µH. Capacitor CS offsets possible
battery impedance. Current is measured at the input of the
module.
Figure 11. Input Reflected-Rip ple Test Setup
8-513(C)
Note:Use a 0.1 µF ceramic capacitor. Scope measurement should
be made using a BNC socket. Position the load between
50 mm and 75 mm (2 in. and 3 in.) from the module.
Figure 12. Peak-to-Peak Output Noise
Measurement Test Setup
8-749(C).a
Note:All measurements are taken at the module terminals. When
socketing, place Kelvin connections at module terminals to
avoid measurement errors due to socket contact resistance.
Figure 13. Output Voltage and Efficiency
Measurement Test Setup
TIME, t (0.2 ms/div)
OUTPUT CURRENT,
I
O
(2 A/div)
OUTPUT VOLTAGE,
V
O
(50 mV/div)
TIME, t (10 ms/div)
REMOTE ON/OFF,
Von/off (5 V/div)
OUTPUT VOLTAGE,
V
O
(%V
O, set
)
100
80
40
TO OSCILLOSCOPE
C
S
220 µF
IMPEDANCE < 0.1
@ 20 ˚C, 100 kHz
V
I
(+)
V
I
(-)
L
TEST
BATTERY
12 µH
Ω
CURRENT
PROBE
VO(+)
VO(–)
RESISTIVE
LOAD
SCOPE
COPPER STRIP
0.1 µF
VI(+)/CASE
IIIO
SUPPLY
CONTACT
RESISTANCE
CONTACT AND
DISTRIBUTION LOSSES
LOAD
SENSE(+)
VI(–)
VO(+)
VO(–)
SENSE(–)
ηVO(+) VO(–)–[] IO
VI(+) VI(–)–[] II
-----------------------------------------------------
⎝⎠
⎛⎞
100×=%
8Lineage Power
Data Sheet
March 27, 2008
36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W
JBW030-Series Power Module: dc-dc Converters
Design Considerations
Grounding Considerations
The case is not connected internally to allow the user
flexibility in grounding.
Input Source Impedance
The power module should be connected to a low ac-
impedance input source. Highly inductive source
impedances can affect the stability of the power mod-
ule. A 33 µF electrolytic capacitor (ESR < 0.7 Ω at
100 kHz) mounted close to the power module helps
ensure stability of the unit. (See Figure 11.)
Safety Considerations
For safety-agency approval of the system in which the
power module is used, the power module must be
insta lled in compliance with the spacing and sep aration
requirements of the end-use safety agency standard,
i.e., UL 60950, CSA C22.2 No. 60950-00, and EN
60950 (VDE0805):2001-12.
If the input source is non-SELV (ELV or a hazardous
voltage greater than 60 Vdc and less than or equal to
75 Vdc), for the module's output to be considered
meeting the requirements of safety extra-low volt age
(SELV), all of the following must be true:
nThe input source is to be provided with reinforced
insulation from any other hazard ou s voltages, includ-
ing the ac mains.
nOne VI pin and one VO pin are to be grounded or
both the input and output pins are to be kept floating.
nThe input pins of the module are not operator acces-
sible.
nAnother SELV reliability test is conducted on the
whole system, as required by the safety agencies, on
the combination of supply source and the subject
module to verify that under a single fault, hazardous
voltages do not appear at the module's output.
Note: Do not ground either of the input pins of the
module without grounding one of the output
pins. This may allow a non-SELV voltage to
appear between the output pins and ground.
The power module ha s extra-low voltag e (ELV) outputs
when all inputs are ELV.
The input to these units is to be provided with a maxi-
mum 5 A fast-acting fuse in th e ungrounded lead.
Feature Descriptions
Overcurrent Protection
To provide protection in a fault (output overload) condi-
tion, the unit is equipped with internal current-limiting
circuitry and can endure current limiting for an unlim-
ited duration. At the point of current-limit inception, the
unit shifts from voltage control to current control. If the
output voltage is pulled very low during a severe fault,
the current-limit circuit can exhibit either foldback or
tailout characteristics (output current decrease or
increase). The unit operates normally once the output
current is brought back into its specified range.
Remote On/Off
Two remote on/off options are available. Positive logic
remote on/off turns the module on during a logic-high
voltage on the REMOTE ON/OFF pin, and off during a
logic low . Negative logic r emote on/off turns the module
off during a logic high and on during a logic low. Nega-
tive logic, device code suffix “1,” is the factory-preferred
configuration.
To turn the power module on and off, the user must
supply a switch to control the voltage between the
on/off terminal and the VI(–) terminal (Von/off). The
switch can be an open collector or equivalent (see Fig-
ure 14). A logic low is Von/off = –0.7 V to 1.2 V, during
which the module is off. The maximum Ion/off during a
logic low is 1 mA. The switch should maintain a logic-
low voltage while sinking 1 mA.
During a logic high, the maximum Von/off generated by
the power module is 15 V. The maximum allowable
leakage current of the switch at Von/off = 15 V is 50 µA.
The module has internal capacitance to reduce noise
at the ON/OFF pin. Additional ca pacitance is not gen-
erally needed and may deg rade the start-up character-
istics of the module.
CAUTION: To avoid damaging the power module
or external on/off circuit, the connec-
tion between the VI(–) pin and the input
source must be made before or simulta-
neously to making a connection
between the ON/OFF pin and the input
source (either directly or through the
external on/off circuit.)
Lineage Power 9
Data Sheet
March 27, 2008 36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W
JBW030-Series Power Module: dc-dc Converters
Feature Descriptions (continued)
Remote On/Off (continued)
8-720(C).h
Figure 14. Remote On/Off Implementation
Remote Sense
Remote sense minimizes the effects of distri bution
losses by regulating the voltage at the remote-sense
connections. The voltage between the remote-sense
pins and the output terminals must not exceed the out-
put voltage se nse ra nge g ive n in the Featur e Specifica-
tions table, i.e.:
[VO(+) – VO(–)] – [SENSE(+) – SENSE(–)] ≤ 0.2 V
The voltage between the VO(+) and VO(–) terminals
must not exceed the minimum output overvoltage shut-
down voltage as indicated in the Feature S pecifications
table. This limit includes any incre ase in volt age due to
remote-sense co mpensation and output voltage set-
point adjustment (trim). See Figure 15.
If not using the remote-sense feature to regulate the
output at the point of load, then connect SENSE(+) to
VO(+) and SENSE(–) to VO(–) at the module .
8-651(C).m
Figure 15. Effective Circuit Configuration for
Single-Module Remote-Sense Operation
Output Voltage Set-Point Adjustment
(Trim)
Output voltage trim allows the user to increase or
decrease the output volt age set point of a module. This
is accomplished by connecting an external resistor
between the TRIM pin and either the SENSE(+) or
SENSE(–) pins. With an external resistor between the
TRIM and SENSE(–) pins (Radj-down), the output volt age
set point (VO, adj) decreases (see Figure 16). The fol-
lowing equation determines th e required exter nal-resis-
tor value to obtain an output voltage change of % Δ.
For example, to lower the output voltage by 20%, the
external resist or value must be:
With an external resistor connected be tween the TRIM
and SENSE(+) pins (Radj-up), the output voltage set
point (VO, adj) increases (see Figure 17). The following
equations determine the required external-resistor
value to obtain an output voltage change of % Δ.
JBW030A:
For example, to increase the output voltage of the
JBW030A by 5%, the external resistor value must be:
JBW030F:
For example, to increase the output voltage of the
JBW030F by 5%, the external resistor must be:
+
Ion/off
–
Von/off
REMOTE
ON/OFF
VI(+)
VI(-) SENSE(+)
SENSE(–)
VO(+)
VO(–) LOAD
VO(+)
SENSE(+)
SENSE(–)
VO(–)
VI(+)
VI(-)
IOLOAD
CONTACT AND
DISTRIBUTION LOSSES
SUPPLY II
CONTACT
RESISTANCE
Radj-down 1%
Δ
–
%Δ
-------------------
⎝⎠
⎛⎞
10 kΩ=
Radj-down 10.2–
0.2
-----------------
⎝⎠
⎛⎞
10 kΩ40.00 kΩ==
Radj-up VO, nom
2.5
------------------1–
⎝⎠
⎛⎞
1%Δ+
%Δ
-------------------
⎝⎠
⎛⎞
10 kΩ=
Radj-up 5.0
2.5
--------1–
⎝⎠
⎛⎞
10.05+
0.05
---------------------
⎝⎠
⎛⎞
10 kΩ210 kΩ==
Radj-up VOnom,
1.235
------------------- 1–
⎝⎠
⎛⎞
1%Δ+
%Δ
-------------------
⎝⎠
⎛⎞
10 kΩ=
Radj-up 3.3
1.235
---------------1–
⎝⎠
⎛⎞
10.05+
0.05
---------------------
⎝⎠
⎛⎞
10 kΩ351.1 kΩ==
10 Lineage Power
Data Sheet
March 27, 2008
36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W
JBW030-Series Power Module: dc-dc Converters
Feature Descriptions (continued)
Output Voltage Set-Point Adjustment
(Trim) (continued)
The combination of the output voltage adjustment and
sense range and the output voltage given in the Fea-
ture Specifications table cannot exceed 110% of the
nominal outpu t vo ltage betw ee n th e V O(+) and VO(–)
terminals.
The JBW030-Series Power Modules have a fixed cur-
rent-limit set point. Therefore, as the output voltage is
adjusted down, the available output power is reduced.
In addition, the minimum output current is a function of
the output voltage. As the output voltage is adjusted
down, the minimum required output current can
increase.
8-748(C)b
Figure 16. Circuit Configuration to Decrease
Output Voltage
8-715(C)b
Figure 17. Circuit Configuration to Increase Outpu t
Voltage
Output Overvoltage Protection
The output overvoltage clamp consists of control cir-
cuitry, independent of the primary regulation loop, that
monitors the volta ge on the output terminals. The con-
trol loop of the clamp has a higher voltage set point
than the primary loop (see Feature Specifications
table). This provides a redundant voltage-control that
reduces the risk of outpu t overvoltage.
VI(+)
VI(–)
ON/OFF
CASE
VO(+)
VO(–)
SENSE(+)
TRIM
SENSE(–) Radj-down
RLOAD
VI(+)
VI(–)
ON/OFF
CASE
VO(+)
VO(–)
SENSE(+)
TRIM
SENSE(–)
Radj-up RLOAD
Lineage Power 11
Data Sheet
March 27, 2008 36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W
JBW030-Series Power Module: dc-dc Converters
Thermal Considerations
The JBW030-Series Power Modules are designed to operate in a variety of thermal environ ments. As with any
electronic component, sufficient cooling must be provided to help ensure reliable operation. Heat-dissipating com-
ponent s inside the module are thermally coupled to the case to enable heat removal by conduction, convection,
and radiation to the surrounding environ ment.
The thermal data presented is based on measurements taken in a wind tunnel. The test setup shown in Figure 18
was used to collect data for Figure 21.
The graphs in Figures 19 and 20 provide general guidelines for use. Actual performance can vary depending on
the particular applicat ion env iro nm e nt . Th e ma xim u m case temperature of 100 °C must not be exceeded.
8-1046(C)
Note: Dimensions are in millimeters and (inches).
Figure 18. Thermal Test Setup
Basic Thermal Performance
The JBW030-Series Power Modules are constructed with a specially designed, heat spreading enclosure. As a
result, full-load operation in natural convection at 50 °C can be achieved without the use of an external heat sink.
Higher ambient temperatures can be sustained by increasing the airflow or by adding a heat sink. As stated, this
data is based on a maximum case temperature of 100 °C and measured in the test configuration shown in
Figure 18.
76.2
(3.00)
101.6
(4.00)
203.2 (8.00)
AIRFLOW
MEASURE CASE
TEMPERATURE (TC) AT
CENTER OF UNIT
CONNECT ORS TO
LOADS, POWER
SUPPLIES, AND
DATALOGGER,
6.35 (0.25) TALL
19.1 (0.75)
12.7 (0.50)
AIR VELOCITY
AND AMBIENT
TEMPERATURE
MEASURED
BELOW THE
MODULE
AIR-
FLOW
WIND TUNNEL
WALL
203.2
(8.00)
Data Sheet
March 27, 2008
36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W
JBW030-Series Power Module: dc-dc Converters
12 Lineage Power
Thermal Considerations (continued)
Forced Convection Cooling
To determine the necessary airflow, determine the
power dissipated by the unit for the particular applica-
tion. Figures 19 and 20 show typical power
dissipation for these power modules over a range of
output currents. With the known power dissipation and
a given local ambient temperature, the appropriate air-
flow can be chosen from the derating curves in
Figure 21. For example, if the JBW030A dissip ates 6.2
W, the minimum airflow in a 80 °C environment is
1 ms–1 (200 ft./min.).
1-0762
Figure 19. JBW030F Power Dissipation vs.
Output Current
1-0761
Figure 20. JBW030A Power Dissipation vs.
Output Current
8-1051(C)
Figure 21. Forced Convection Power Derating with
No Heat Sink; Either Orientation
Heat Sink Selection
Several heat sinks are available for these modules.
The case includes through-threaded mounting holes
allowing attachment of heat sinks or cold plates from
either side of the module. The mounting torque must
not exceed 0.56 N-m (5 in./lb.).
Figure 22 shows the case-to-ambient thermal resis-
tance, θ (°C/W), for these modules. These curves can
be used to predict which heat sink will be needed for a
particular environment. For example, if the JBW030A
dissipates 7 W of heat in an 80 °C environment with an
airflow of 0.7 ms–1 (130 ft./min.), the minimum heat
sink required can be det er m ine d as follows:
where: θ= module’s total thermal resistance
TC, max = case temperature (See Figure 18.)
TA= inlet am bient temper at ur e
(See Figure 18.)
PD= power dissipation
θ ≤ (100 – 80)/7
θ ≤ 2.9 °C/W
From Figure 22, the 1/2 in. high heat sink or greater is
required.
POWER DISSIPATED, PD (W)
0
1
2
3
4
5
6
7
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6
VI = 36 V
VI = 48 V
VI = 75 V
0
1
2
3
4
5
6
7
8
012345
6
OUTPUT CURRENT, IO (A)
POWER DISSIPATED, P
D
(W)
VI = 75 V
VI = 48 V
VI = 36 V
30 40 50 60 70 100
0
5
6
7
8
LOCAL AMBIENT TEMPERATURE, T
A (˚C)
4
3
2
1
80 90
2.0 ms-1
(400 ft./min.)
1.0 ms-1
(200 ft./min.)
0.5 ms-1 (100 ft./min.)
NATURAL
CONVECTION
9
POWER DISSIPATION, PD (W)
θTCmax TA–,()PD⁄≤
Lineage Power 13
Data Sheet
March 27, 2008 36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W
JBW030-Series Power Module: dc-dc Converters
Thermal Considerations (continued)
Heat Sink Selection (continued)
8-1052(C).a
Figure 22. Case-to-Ambient Thermal Resistance
vs. Air Velocity Curves; Either
Orientation
Although the previous example uses 100 °C as the
maximum case temperature, for extreme ly high rel iabil-
ity applications, one can use a lower temperature for
TC, max.
It is important to point out that the thermal resistances
shown in Figure 22 are for heat transfer from the sides
and bottom of the module as well as the top side with
the attached heat sink; therefore, the case-to-ambient
thermal resistances shown will generally be lower than
the resistan ce of the heat sink b y itse lf. The data in Fig-
ure 22 was taken with a thermally conductive dry pad
between the case and the heat sink to minimize cont act
resistance (typically 0.1 °C/W to 0.3 °C/W).
For a more detailed explanation of thermal energy
management for this series of power modules as we ll
as more det ails on available heat sinks, please request
the following technical note: Thermal Energy Manage-
ment for JC- and JW-Series 30 Watt Board-Mounted
Power Modules (TN97-016EPS).
Layout Considerations
Copper paths must not be routed beneath the power
module standoffs.
0 0.25
(50) 0.51
(100) 0.76
(150) 1.02
(200) 1.78
(350) 2.03
(400)
0
5
6
7
8
AIR VELOCITY, ms-1
(ft./min.)
4
3
2
1
1.27
(250) 1.52
(300)
NO HEAT SINK
1/4 in. HEAT SINK
1/2 in. HEAT SINK
1 in. HEAT SINK
1 1/2 in. HEAT SINK
CASE-TO-AMBIENT THERMAL
RESISTANCE, θCA (˚C/W)
14 Lineage Power
Data Sheet
March 27, 2008
36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W
JBW030-Series Power Module: dc-dc Converters
Outline Diagram
Dimensions are in millimeters and (inches).
Tolerances: x.x ± 0.5 mm (0.02 in.), x.xx ± 0.25 mm (0.010 in.).
8-716(C)
Top View
Side View
Bottom View
57.9 (2.28) MAX
61.0
(2.40)
MAX
VI(-)
ON/
OFF
CASE
+ SEN
TRIM
- SEN
VI(+)
VO(-)
VO(+)
0.51 (0.020)
5.1 (0.20)
MIN
12.7 (0.50)
MAX 1.02 (0.040) DIA
SOLDER-PLATED
BRASS,ALL PINS
10.16
(0.400) 17.78
(0.700)25.40
(1.000)35.56
(1.400)
5
6
7
8
9
MOUNTING INSERTS
M3 x 0.5 THROUGH,
4 PLACES
10.16
(0.400)
25.40
(1.000)
50.8
(2.00)
35.56
(1.400)
5.1 (0.20)
4
3
2
1
12.7 (0.50) MAX
4.8
(0.19)
48.26 (1.900)
TERMINALS
48.3 (1.90)
STANDOFF,
4 PLACES
7.1 (0.28)
7.1
(0.28)
MOUNTING HOLES
Pin marking designation
is shown for reference onl
y
Lineage Power 15
Data Sheet
March 27, 2008 36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W
JBW030-Series Power Module: dc-dc Converters
Recommended Hole Pattern
Component-side footprint.
Dimensions are in millimeters and (inches).
8-716(C)
Ordering Information
Please contact your Lineage Power Account Manager or Field Application Engineer for pricing and availability.
Table 4. Device Codes
Table 5. Device Options
Input
Voltage Output
Voltage Output
Power Remote On/
Off Logic Device
Code Comcode
48 V 3.3 V 21.5 W Positive JBW030F 108966078
48 V 3.3 V 21.5 W Negative JBW030F1 108975418
48 V 5 V 30 W Positive JBW030A 108966086
48 V 5 V 30 W Negative JBW030A1 108970203
Option Device Code Suff ix
Short pins: 3.68 mm ± 0.25 mm
(0.145 in. ± 0.010 in. ) 6
Short pins: 2.79 mm ± 0.25 mm
(0.110 in. ± 0.010 in.) 8
Negative Logic On/Off 1
10.16
(0.400)
10.16
(0.400)
25.40
(1.000)
35.56
(1.400)
12.7 (0.50)
MAX
4.8
(0.19)
MODULE OUTLINE
5.1 (0.20)
48.26 (1.900)
TERMINALS
48.3 (1.90)
50.8
(2.00) 17.78
(0.700)
25.40
(1.000)
35.56
(1.400)
1
2
3
45
6
7
8
9
MOUNTING INSERTS
Data Sheet
March 27, 2008
36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W
JBW030-Series Power Module: dc-dc Converters
March 27, 2008
FDS02-038EPS (Replaces FDS02-037EPS )
World Wide Headquarte rs
Lin eag e Po wer Corp or atio n
3000 Sky l ine Dri ve, M esquite, TX 75149, USA
+1-800-526-7819
(Outs id e U .S.A.: +1-972-284-2626)
www. l ineagepow er .co m
e-mail : techsu pp o rt1@l ineagepo wer.com
A sia-Pacific Headquart er s
T el: +65 6416 4283
Europ e, Mi dd le-East and Africa H eadquarters
T el: +49 89 6089 286
Ind ia Head qu arters
T el: +91 80 28411633
Lineage Power reserves the right to make changes to the produc t(s) or information contai ned herein wi thout notice. No l iability i s ass um ed as a resul t of their use or
appl ic ation. No ri ghts under any patent acc om pany the sale of any s uc h product(s) or information.
© 2008 Lineage Power Corpor ation, (Mesquite, Texas ) Al l International Rights Res erved.
Ordering Information (continued)
Table 6. Device Accessories
Note: Dimensions are in millimeters and (inches).
D000-c.cvs
Figure 23. Longitudinal Heat Sink
D000-d.cvs
Figure 24. Transverse Heat Sink
Accessory Comcode
1/4 in. transverse kit (heat sink, thermal pad, and screws) 407243989
1/4 in. longitudinal kit (heat sink, thermal pad, and screws) 407243997
1/2 in. transverse kit (heat sink, thermal pad, and screws) 407244706
1/2 in. longitudinal kit (heat sink, thermal pad, and screws) 407244714
1 in. transverse kit (heat sink, thermal pad, and screws) 407244722
1 in. longitudinal kit (heat sink, thermal pad, and screws) 407244730
1 1/2 in. transverse kit (heat sink, thermal pad, and screws) 407244748
1 1/2 in. longitudinal kit (heat sink, thermal pad, and screws) 407244755
57.9 (2.28)
61
(2.4)
1 IN.
1 1/2 IN.
1/4 IN.
1/2 IN.
1 IN.
1 1/2 IN.
61 (2.4)
1/4 IN.
1/2 IN.
57.9
(2.28)