CD Technologies VKA60xS User Manual
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Corporate: www.cdtechno.com
Product: www.cdpowerelectronics.com
VKA60xS
60 Watt Single Output Half Brick DC/DC Converter
The VKA60xS Series DC/DC
converters present an economical 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
18-36 V & 33 - 75V Input Range
High Efficiency: 87% Typical at
5V
100µS Transient Response 50-
100% Load Step
420 kHz Fixed-Frequency
Operation
Remote Sense
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 VKA60xS's proprietary
control circuitry responds to 50-100%
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
load steps in 100µSeconds to within
1% nominal Vout.
The patented fixed frequency
architecture combined with surface
mount technology results in a compact, efficient and reliable solution to
DC/DC conversion requirements.
Safety per UL1950, EN 60950 and
CSA 22.2 #234
PRODUCT SELECTION CHART
MODEL INPUT VOUT IOUT EFFICIENCY
VKA60LS03 3.3V 12.0 80 81
VKA60LS05 24VDC 5.0V 12.0 85 86
VKA60LS12 12.0V 5.0 87 88
VKA60LS15 (18-36) 15.0V 4.0 88 89
VKA60LS24 24.0V 2.5 89 90
VKA60MS03 3.3V 12.0 81 82
VKA60MS05 48VDC 5.0V 12.0 86 87
VKA60MS12 12.0V 5.0 88 89
VKA60MS15 (33-75) 15.0V 4.0 89 90
VKA60MS24 24.0V 2.5 89 90
VOLTAGE (VDC) (A) MIN TYP
SPECIFICATIONS, ALL MODELS
Specifications are at T
PARAMETER CONDITIONS MIN TYP MAX UNITS
INPUT
Voltage Range
VKA60LS 18 24 36 VDC
VKA60MS 33 48 75 VDC
Maximum Input Current
VKA60LS VIN = 16VDC 4.4 A
VKA60MS VIN = 27VDC 2.6 A
Reflected Ripple Current Peak - Peak 20 mA
Input Ripple Rejection DC to 1KHz 50 60 dB
No Load Input Current LS/MS 50/100 mA
Power Dissipation LS/MS
INPUT
No Load 3.6/4.8 W
Standby, Primary On/Off Disabled LS/MS 0.18/0.4 W
Inrush Charge VIN = VINmax.
VKA60LS 0.520 mC
VKA60MS 0.360 mC
Quiescent Operating Current
Primary On/Off Disabled 8 12 mA
PARAMETER CONDITIONS MIN TYP MAX UNITS
OUTPUT
Rated Power 0 60 W
Set point Accuracy 1%
Line Regulation High Line to Low Line 0.02 0.05 %
Load Regulation No Load to Rated Load 0.02 0.05 %
Output Temperature Drift ±.02 %/°C
Output Ripple, p-p DC to 20MHz BW 1% V
Output Current Limit Inception 130% l
Output Short-Circuit Current (2) test 110% l
OUTPUT
Output Overvoltage Limit 125% 135% V
Transient Response 50 to 100% Load Step
Peak Deviation di/dt = 1.0A/µSec 2% V
Settling Time V
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 V
GENERAL
Efficiency, Line, Load, Temp. (3)
Switching Frequency 400 420 440 KHz
Remote Sense Compensation 0.5 V
Output Voltage Adjust Range 12V & higher(4) -50% / +25% V
Remote On/Off Control Inputs
Primary Open Collector/Drain
Sink Current-Logic Low 1.0 mA
GENERAL
Vlow 0.4 V
Vhigh Open Collector
Turn-on Time Within 1% of Rated Output 10.0 12.5 mSec
Weight 85 (3.0) g (oz.)
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 7.1 °C/W
Lead Solder Temperature 10 Seconds max +300 °C
NOTES: (1) See Typical Performance Curves, page 3
Product: www.cdpowerelectronics.com
(2) Continuous Mode
(3) See graphs for Efficiency vs. Output Load, VIN, T
(4) 3.3V Models Limited in Trim Down Range
(5) Consult Factory for Details
= +40°C nominal input voltage unless otherwise specified.
CASE
, 1% of Nominal Output 100 µSec
OUT
= 240VAC, 60Hz 180 µA, rms
ISO
CASE
VKA60xS Rev C 3/2001
OUT
OUT
OUT
OUT
OUT
, Nom
, Nom
, Nom
, Nom
, Nom
2
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