Datasheet

40W, Dual Output
VER:00 Page 25 of 35 Issued Date：2009/03/02
EMC Considerations (Continued)
Suggested Schematic for EN55022 Conducted Emission Class B Limits
RecommendedLayout with Input Filter
To meet conductedemissions EN55022 CLASS B neededthe following components:
PXF40-12Dxx
Component Value Voltage Reference
C1, C3 4.7uF 50V 1812 MLCC
C5, C6 1000pF 2KV 1808 MLCC
L1 450uH ---- Common Choke
PXF40-24Dxx
Component Value Voltage Reference
C1, C3 6.8uF 50V 1812 MLCC
C5, C6 1000pF 2KV 1808 MLCC
L1 450uH ---- Common Choke
PXF40-48Dxx
Component Value Voltage Reference
C1, C2 2.2uF 100V 1812 MLCC
C3, C4 2.2uF 100V 1812 MLCC
C5, C6 1000pF 2KV 1808 MLCC
L1 830uH ---- Common Choke