Datasheet

TEP 75WI Series
Application Note
http://www.tracopower.com Page 50 of 69
EMI considerations
Suggested schematic for EN55022 conducted emission Class A limits
Recommended Layout With Input Filter
To meet conducted emissions EN55022 CLASS A needed the following components：
TEP 75-24xxWI
Component Value Voltage Reference
C1、C3 100 μF
50 V Nippon chemi-con KY
series
C2、C4、C5 4.7 μF 50 V 1812 MLCC
C6、C7、C8、C9、C10、C11 1000 pF 3 KV 1808 MLCC
L1 156 μH ± 35%
---- Common Choke,
P/N：PMT-072
TEP 75-48xxWI
Component Value Voltage Reference
C1、C3 100 μF
100 V Nippon chemi-con KY
series
C2、C4、C5 2.2 μF 100 V 1812 MLCC
C6、C7、 C8、C9、C10、C11 1000 pF 3 KV 1808 MLCC
L1 620 μH ± 35%
---- Common Choke,
P/N：PMT-067
Note：1. Common mode choke have been dene and show in page 54.
2. While testing, connect the CASE pin and four screw bolts to shield plane, the EMI could be reduced.