Datasheet

Application Note
Created by Traco Electronic AG Arp. www.tracopower.com Date: May 31
th
, 2013 / Rev.: 1.2
/
Page 43 / 52
20W Single & Dual Output
EMI considerations
Suggested schematic to comply with EN55022 Class B limits
Recommended layout
To comply with EN55022 CLASS B following components are recommended:
THN 20-121x
Componen
t
Value Volta
g
e Reference
C1 4.
7
μ
F
25V 1812 MLCC
C2, C
3
---- ---- ----
C4, C
5
470p
F
2KV 1808 MLCC
L1 32
5
μH ---- Common Choke, P/N:
T
CK-050
THN 20-241x
Componen
t
Value Volta
g
e Reference
C1 4.
7
μ
F
50V 1812 MLCC
C2, C
3
---- ---- ----
C4, C
5
470p
F
2KV 1808 MLCC
L1 32
5
μH ---- Common Choke, P/N:
T
CK-050
THN 20-481x
Com
p
onen
t
Value Volta
g
e Reference
C1, C
2
2.
2
μ
F
100V 1812 MLCC
C
3
2.
2
μ
F
100V 1812 MLCC
C4, C
5
1000
pF
2KV 1808 MLCC
L1 32
5
μ
H ---- Common Choke, P/N:
T
CK-050