Datasheet

cui.com
CUI Inc │ SERIES: VHK200W │ DESCRIPTION: DC-DC CONVERTER date 12/16/2013 │ page 4 of 7
0%
20%
40%
60%
80%
100%
120%
-40 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85
Ambient Temperature - degrees C
Relative Output Power - % of nominal output
Natural
Convection
0.5 m/S
(100LFM)
1.0 m/S
(200LFM)
1.5 m/S
(300LFM)
2.0 m/S
(400LFM)
2.5 m/S
(500LFM)
3.0 m/S
(600LFM)
3.5 m/S
(700LFM)
DERATING CURVES
Figure 1 Table 1
TEST CONFIGURATION
Cin
L1
To Oscilloscope
+Vin
-Vin
+Vo
-Vo
R-Load
Vi
n
+
-
Note: Inputreected-ripplecurrentismeasuredwithaninductorL1tosimulatesourceimpedance.
External components
for 24 Vdc input models
L1 1.2μH
Cin 470μF,ESR<0.2Ωat100KHz
for 48 Vdc input models
L1 12μH
Cin 47μF,ESR<0.7Ωat100KHz
VHK200W Power Derating Curves At Nominal Input
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