Datasheet
TEP 75WI Series
Application Note
http://www.tracopower.com Page 52 of 69
EMI considerations (continued)
Suggested schematic for EN55022 conducted emission Class B limits
Recommended Layout With Input Filter
To meet conducted emissions EN55022 CLASS B needed the following components：
TEP 75-24xxWI
Component Value Voltage Reference
C1、C5 100 μF 50 V Nippon chemi-con KY series
C2、C3、C4、C6、C7 4.7 μF 50 V 1812 MLCC
C8、C9、C14、C15 1000 pF 3 KV 1808 MLCC
C10、C11、C12、C13 10 nF 2 KV 1812 MLCC
L1、L2 305μH ± 35% ---- Common Choke, P/N：TCK-073
TEP 75-48xxWI
Component Value Voltage Reference
C1、C5 100 μF 100 V Nippon chemi-con KY series
C2、C3、C4、C6、C7 2.2 μF 100 V 1812 MLCC
C8、C14、C15 1000 pF 3 KV 1808 MLCC
C9 4700 pF 3 KV 1812 MLCC
C10、C11、C12、C13 10 nF 2 KV 1812 MLCC
L1 1186 μH ± 35% ---- Common Choke, P/N: TCK-064
L2 156 μH ± 35% ---- Common Choke, P/N：PMT-072
Note：1. Common mode choke have been dene and show in page 54.
2. While testing, connect the CASE pin and four screw bolts to shield plane, the EMI could be reduced.