Datasheet

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CUI Inc │ SERIES: VHK200W │ DESCRIPTION: DC-DC CONVERTER date 12/16/2013 │ page 5 of 7
DC/DC Converter
+Vo
-Vo
+Vin
C2
-Vin
C1 C3
+Vo
-Vo
CASE
+Vin
-Vin
-S
+S
C4
L1
L2
DC/DC Converter
+Vo
-Vo
+Vin
C2
-Vin
C1 C3
+Vo
-Vo
+Vin
-Vin
-S
+S
CY1
CY2
L1
Figure 2
Recommended Circuit for EN55022 Class A
(for all 12, 15, 24, & 28 Vdc output models)
Figure 3
Recommended Circuit for EN55022 Class A
(for all 48 Vdc output models)
EMC RECOMMENDED CIRCUITS
Table 2
Class A Recommended Components
Model C1
1
C2
1
C3
1
CY1
2
CY2
2
L1 L2
VHK200W-Q24-S12 120μF/100V 120μF/100V NC NC NC 0.5 mH SHORT
VHK200W-Q24-S15 47μF/100V 47μF/100V NC NC NC 0.5 mH SHORT
VHK200W-Q24-S24 100μF/100V 100μF/100V NC NC NC 0.5 mH SHORT
VHK200W-Q24-S28 100μF/100V 100μF/100V NC NC NC 0.5 mH SHORT
VHK200W-Q24-S48 100μF/100V 100μF/100V 100μF/100V 680 pF/2 KV 680 pF/2 KV 1.0 mH NC
VHK200W-Q48-S12 82μF/100V 82μF/100V NC NC NC 0.5 mH SHORT
VHK200W-Q48-S15 82μF/100V 82μF/100V NC NC NC 0.5 mH SHORT
VHK200W-Q48-S24 82μF/100V 82μF/100V NC NC NC 0.7 mH SHORT
VHK200W-Q48-S28 150μF/100V 150μF/100V NC NC NC 0.5 mH SHORT
VHK200W-Q48-S48 100μF/100V 100μF/100V 100μF/100V 680 pF/2 KV 680 pF/2 KV 1.0 mH NC
EN55022 CLASS A
Notes: 1. Aluminum capacitors.
2. Ceramic capacitors.
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