VKA50xS Rev B 4/99 Page 1
Product Data Sheet
50 WATT SINGLE OUTPUT
HIGH DENSITY DC/DC CONVERTER
VKA50xS Series
Efficiency(%)
VKA50LS03 3.3V 10.0 80 81
VKA50LS05 24VDC 5.0V 10.0 85 86
VKA50LS12 12.0V 4.2 87 88
VKA50LS15 (18-36) 15.0V 3.3 88 89
VKA50LS24 24.0V 2.1 89 90
Input VOUT IOUT Note (1)
Model Voltage (VDC) (A) Min Typ
Efficiency(%)
VKA50MS03 3.3V 10.0 81 82
VKA50MS05 48VDC 5.0V 10.0 86 87
VKA50MS12 12.0V 4.2 88 89
VKA50MS15 (33-75) 15.0V 3.3 89 90
VKA50MS24 24.0V 2.1 89 90
Input VOUT IOUT Note (1)
Model Voltage (VDC) (A) Min Typ
AGENCY APPROVALS
Internet: http://www.cdpowerelectronics.com
Power Electronics Division, United States
3400 E Britannia Drive, Tucson, Arizona 85706
Phone: 800.547.2537 Fax: 520.770.9369
Power Electronics Division, Europe
C&D Technologies (Power Electronics) Ltd.
132 Shannon Industrial Estate, Shannon, Co. Clare, Ireland
Tel: +353.61.474.133 Fax:+353.61.474.141
FEATURES
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●18 - 36V & 33 - 75V INPUT RANGE
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●SMALL SIZE: 2.28" X 2.4" X 0.50"
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●HIGH EFFICIENCY: 87% TYPICAL AT 5V
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●100µµ
µµ
µS TRANSIENT RESPONSE 50-100% LOAD STEP
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●420kHZ FIXED-FREQUENCY OPERATION
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●OPERATION TO +100°C BASEPLATE TEMP.
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●PRIMARY REMOTE ON/OFF, CHOICE OF POS/NEG
LOGIC
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●ADJUSTABLE OUTPUT VOLTAGE
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●REMOTE SENSE
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●CONTINUOUS SHORT-CIRCUIT PROTECTION
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●THERMAL SHUTDOWN
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●SAFETY PER UL1950, EN 60950 AND CSA 22.2 #234
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●CASE GROUND PIN
DESCRIPTION
The VKA50xS Series DC/DC converters present an eco-
nomical and practical solution for distributed 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 18 to 36 and 33 to 75 volts, these
modules are ideal for use in battery backup applications
common 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 VKA50xS's proprietary control circuitry responds to
50-100% load steps in 100µSeconds to within 1% nomi-
nal Vout.
The patented fixed frequency architecture combined with
surface mount technology results in a compact, efficient
and reliable solution to DC/DC conversion requirements.