Datasheet

Application Note
Created by Traco Electronic AG Arp. www.tracopower.com Date: June 9
th
, 2010 / Rev.: 1.2 / Page 51 / 63
100W Single Output
EMI considerations (continued)
Suggested schematic to comply with EN55022 conducted emission Class B
Recommended Layout With Input Filter
To comply with conducted noise according to EN 55022 Class B following components are recommended:
TEP 100-12xx
Component Value Voltage Reference
C1, C5 470µF 35V Nippon chemi-con KY series
C2, C3, C4, C6, C7 22µF 25V 1812 MLCC
C8, C9, C14, C15 1000pF 3KV 1808 MLCC
C10, C11, C12, C13 10nF 2KV 1812 MLCC
L1, L2 305µH ±35% ---- Common Choke, P/N: TCK-073
TEP 100-24xx
Component Value Voltage Reference
C1, C5 100µF 50V Nippon chemi-con KY series
C2, C3, C4, C6, C7 4.7µF 50 V 1812 MLCC
C8, C9, C14, C15 1000pF 3KV 1808 MLCC
C10, C11, C12, C13 10 nF 2KV 1812 MLCC
L1, L2 305µH ± 35% ---- Common Choke, P/N: TCK-073
TEP 100-48xx
Component Value Voltage Reference
C1, C5 100µF 100V Nippon chemi-con KY series
C2, C3, C4, C6, C7 2.2µF 100V 1812 MLCC
C8, C14, C15 1000pF 3KV 1808 MLCC
C9 4700pF 3KV 1812 MLCC
C10, C11, C12, C13 10nF 2KV 1812 MLCC
L1 1400µH ±35% ---- Common Choke, P/N: TCK-064
L2 156µH ±35% ---- Common Choke, P/N: TCK-072
Note: 1. Common mode choke have been define and show in page 52.
2. While testing, connect the case pin and the four screw bolts to shield plane, the EMI could be better reduced.