VKA150MS12-1 - C&D Technologies, Inc.

150 Watt Single Output Half Brick DC/DC Converter

VKA150MSVKA150MS

VKA150MS

!33 - 75V Input Range

!High Efficiency: 85% Typical at

!100µS Transient Response 50-

100%Load Step

!420 kHz Fixed-Frequency

Operation

!Remote Sense

!UL/CUL 1950, VDE EN60950

!Operation to +100°C Baseplate

Temperature

!Primary Remote On/Off, Choice of

Pos/Neg Logic

!Adjustable Output Voltage

!Continuout Short-Circuit Protection

!Thermal Shutdown

!Case Ground Pin

Corporate: www.cdtechno.com

Product: www.cdpoweronline.com

The VKA150MS Series DC/DC

converters present an economical

and practical solution for distrib-

uted power system architectures

which require high power density

and efficiency while maintaining

system modularity and

upgradeability. With the ability to

operate over a wide input voltage

range of 33 to 75 volts, these

modules are ideal for use in

battery backup applications com-

mon in todays' telecommunication

and electronic data processing

applications. The output is fully

isolated from the input, allowing

for a variety of polarity and

grounding configurations.

The VKA150MS's proprietary

control circuitry responds to 50-

100% load steps in 100µSeconds

to within 1% nominal Vout.

The patented fixed frequency

architecture combined with sur-

face mount technology results in a

compact, efficient and reliable

solution to DC/DC conversion

requirements. Safety approvals per

UL/CUL 1950, EN 60950

VKA150 MSzz -

Device Family

Indicates 150 Watt Regulated Unit

Model Number

Selected from Table of Electrical Characteristics

Where:

zz = Output Voltage (05=5V, 12=12V,15=15V,etc.)

Lead Length

0.200" - No Number

0.145" - (6)

0.110" - (8)

Remote On-Off Logic:

Positive - No Number

Negative - (1)

ORDERING

INFORMATION

MODEL INPUT VOUT IOUT EFFICIENCY

VOLTAGE (VDC) (A) MIN TYP

VKA150MS05 48VDC 5.0V 30.0 84 85

VKA150MS12 48VDC 12.0V 12.5 88 89

VKA150MS15 48VDC 15.0V 10.0 88 89

VKA150MS24 48VDC 24.0V 6.25 89 90

PRODUCT SELECTION CHART

VKA150MS Rev C 1/2003

VKA150MS Rev C 1/2003 2

Product: www.cdpoweronline.com

SPECIFICATIONS, ALL MODELS

Specifications are at TCASE = +40°C Nominal Input Voltage unless otherwise specified.

INPUTOUTPUT

PARAMETER CONDITIONS MIN TYP MAX UNITS

OUTPUT

Rated Power 150 W

Set point Accuracy 1 %

Line Regulation High Line to Low Line 0.02 0.05 %

Load Regulation No Load to Rated Load 0.2 0.5 %

Output Temperature Drift ±.02 ±.05 %/°C

Output Ripple, p-p DC to 20MHz BW 1.5% VOUT, Nom

Output Current Limit Inception 105% 130% lOUT, Nom

Output Short-Circuit Current 120% 135% lOUT, Nom

Output Overvoltage Limit 120% 140% VOUT, Nom

Transient Response 50 to 100% Load Step

Peak Deviation di/dt = 0.1A/µSec 2 3% VOUT, Nom

Settling Time VOUT, 1% of Nominal Output 75 100 µSec

NOTES: (1) See Typical Performance Curves, page 3

(2) Continuous Mode

(3) See graphs for Efficiency vs. Output Load, VIN, TCASE

(4) 3.3V Models Limited in Trim Down Range

(5) Consult Factory for Details

GENERAL

PARAMETER CONDITIONS MIN TYP MAX UNITS

ISOLATION

Input to Output Peak Test for 2 Seconds 1500 VDC

Input to Baseplate 1500 VDC

Output to Baseplate 500 VDC

Resistance 10 MΩ

Capacitance 2000 pF

Leakage Current VISO = 240VAC, 60Hz 180 µA, rms

GENERAL

Switching Frequency 400 420 440 KHz

Remote Sense Compensation 0.5 V

Output Voltage Adjust Range 5V -40% / +10% VOUT, Nom

12V -50% / +10% VOUT, Nom

15V -50% / +10% VOUT, Nom

24V -50% / +10% VOUT, Nom

Remote On/Off Control Inputs

Primary Open Collector/Drain

Sink Current-Logic Low 1.0 mA

Vlow 0.4 V

Vhigh Open Collector

Turn-on Time Within 1% of Rated Output 5.0 8.0 mSec

Weight 3 (85) oz (g)

TEMPERATURE

Operation/Specification Case Temperature -40 +25 +100 °C

Storage Case Temperature -55 +25 +125 °C

Shutdown Temperature Case Temperature +100 +115 °C

Thermal Impedance, case-ambient 8.2 °C / W

Lead Solder Temperature 10 Seconds max +300 °C

PARAMETER CONDITIONS MIN TYP MAX UNITS

INPUT

Voltage Range 48 75 VDC

Maximum Input Current VIN = 30VDC 6.6 A

Reflected Ripple Current Peak - Peak 550 mA

Input Ripple Rejection DC to 1KHz 50 60 dB

No Load Input Current MS 100 mA

Power Dissipation MS

No Load 4.8 W

Standby, Primary On/Off

Disabled MS 0.4 W

Inrush Charge VIN = VINmax 0.360 mC

Quiescent Operating Current

Primary On/Off Disabled 8 12 mA

Product: www.cdpoweronline.com VKA150MS Rev C 1/2003

1.000

[25.40]

1.400

[35.56]

2.000

[50.80]

0.19 [4.8]

0.20 [5.1] 0.50 [12.7]

0.40 [10.16]

0.530 MAX

[13.46]

0.20 [5.1] .040 [1.02] DIA.

7 PLACES .081 [2.06] DIA.

2 PLACES

1.400

[35.56]

1.000

[25.40]

0.700

[17.78]

.400 [10.16]

1.900

[48.26]

2.28

[57.91]

MAX

MOUNTING INSERTS M3 X 0.5 THRU, 4 PLACES

MAX. TORQUE, 8 IN/LBS

2.40

[61.0]

MAX

MECHANICAL

NOTES:

All dimensions are in inches (millimeters).

PIN PLACEMENT TOLERANCE: ± 0.005"

MECHANICAL TOLERANCE: ± 0.015"

Marked with: specific modeL ordered, date code, job code.

MATERIAL: Units are encapsulated in a low thermal

resistance molding compound which has excellent chemical

resistance and electrical properties in high humidity

environments and over a wide operating temperature range.

The encapsulant and outer shell of the unit have UL94V-0

ratings. Lead material is solder plated to allow ease of

solderability.

VKA150MS

Special attention should be given to the peak voltage

deviation during a dynamic load step when trimming

the output above the original set point to avoid

tripping the overvoltage protection circuit. Should an

OVP condition occur, the converter will go into a

latch condition and must be externally reset before it

will return to normal operation.

OUTPUT ADJUST VOLTAGE OVP NOTE

This feature allows the user to accurately adjust the

module's output voltage set point to a specified level.

This is achieved by connecting a resistor or potentiometer

from the TRIM terminal to either the +Vout terminal (for

increased Vout) or the -Vout terminal (for decreased

Vout). The formulae below describe the trim resistor

value to obtain a Vout change of ∆%. VO is output

voltage prior to adjustment (3.3V, 5V, 12V, 15V, or 24V).

Radj - up = ( Vo (100 + ∆%) _ (100 + 2∆%) ) kΩ

1.225∆% ∆%

Radj - down = (100 - 2) kΩ

∆%

VKA150MS Rev C 1/2003 4

Product: www.cdpoweronline.com

Power Electronics Division, Americas

3400 E Britannia Drive, Tucson, Arizona 85706

Tel: 800.547.2537 Fax: 520.295-4197

C&D Technologies, EMEA/AP

Milton Keynes MK14 5BU UK

Tel: +44 (0)1908 615232 Fax: +44 (0)1908 617545

Any data, prices, descriptions or specifications presented herein are subject to revision by C&D Technologies, Inc. without notice. While such information is believed to be

accurate as indicated herein, C&D Technologies, Inc. makes no warranty and hereby disclaims all warranties, express or implied, with regard to the accuracy or

completeness of such information. Further, because the product(s) featured herein may be used under conditions beyond its control, C&D Technologies, Inc. hereby

disclaims all warranties, either express or implied, concerning the fitness or suitability of such product(s) for any particular use or in any specific application or arising from

any course of dealing or usage of trade. The user is solely responsible for determining the suitability of the product(s) featured herein for user’s intended purpose and in

user’s specific application. C&D Technologies, Inc. does not warrant or recommend that any of its products be used in any life support or aviation or aerosp ace applications.