SPECIFICATIONS, ALL MODELS
Specifications are at T
CASE
= +40°C nominal input voltage unless otherwise specified.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
INPUT
Voltage Range
VKA50LS
VKA50MS
Maximum Input Current
VKA50LS
V
IN
= 16VDC
VKA50MS
V
IN
= 27VDC
Reflected Ripple Current
Peak - Peak
Input Ripple Rejection
DC to 1KHz
No Load Input Current LS/MS
Power Dissipation LS/MS
No Load
Standby, Primary On/Off Disabled LS/MS
Inrush Charge
V
IN
= V
IN
max.
VKA50LS
VKA50MS
Quiescent Operating Current
Primary On/Off Disabled
18
33
24
48
36
75
3.7
2.2
VDC
VDC
A
A
mA
dB
mA
W
W
INPUT
50
20
60
50/100
3.6/4.8
0.18/0.4
0.520
0.360
8
12
mC
mC
mA
PARAMETER
OUTPUT
Rated Power
Set point Accuracy
Line Regulation
Load Regulation
Output Temperature Drift
Output Ripple, p-p
Output Current Limit Inception
Output Short-Circuit Current (2)
Output Overvoltage Limit
Transient Response
Peak Deviation
Settling Time
CONDITIONS
MIN
0
TYP
MAX
50
1
0.05
0.05
UNITS
W
%
%
%
%/°C
V
OUT
, Nom
l
OUT
, Nom
l
OUT
, Nom
V
V
OUT
, Nom
µSec
OUTPUT
High Line to Low Line
No Load to Rated Load
DC to 20MHz BW
test
0.02
0.02
±.02
1%
125%
50 to 100% Load Step
di/dt = 1.0A/µSec
V
OUT
, 1% of Nominal Output
2%
100
130%
110%
130%
PARAMETER
ISOLATION
Input to Output
Input to Baseplate
Output to Baseplate
Resistance
Capacitance
Leakage Current
GENERAL
Efficiency, Line, Load, Temp. (3)
Switching Frequency
Remote Sense Compensation
Output Voltage Adjust Range
Remote On/Off Control Inputs
Primary
Sink Current-Logic Low
Vlow
Vhigh
Turn-on Time
Weight
TEMPERATURE
Operation/Specification
Storage
Shutdown Temperature
Thermal Impedance, case-ambient
Lead Solder Temperature
NOTES:
(1)
(2)
(3)
(4)
(5)
CONDITIONS
Peak Test for 2 Seconds
MIN
1500
1500
500
10
TYP
MAX
UNITS
VDC
VDC
VDC
MΩ
pF
µA,
rms
V
ISO
= 240VAC, 60Hz
2000
180
GENERAL
400
12V & higher(4)
Open Collector/Drain
420
-50% / +25%
440
0.5
KHz
V
V
OUT
, Nom
Within 1% of Rated Output
10.0
1.0
0.4
Open Collector
12.5
85 (3.0)
+100
+125
+115
+300
mA
V
mSec
g (oz.)
°C
°C
°C
°C/W
°C
Case Temperature
Case Temperature
Case Temperature
10 Seconds max
-40
-55
+100
+25
+25
7.1
See Typical Performance Curves, page 3
Continuous Mode
See graphs for Efficiency vs. Output Load, V
IN
, T
CASE
3.3V Models Limited in Trim Down Range
Consult Factory for Details
VKA50xS
Rev C
3/2001
Product: www.cdpowerelectronics.com
2
CANDD [ C&D TECHNOLOGIES ]
