Datasheet

DataSheet
40W, Single Output
VER:00 Page 50 of 62 Issued Date：2009/03/02
EMC Considerations (Continued)
Suggested Schematic for EN55022 Conducted Emission ClassB Limits
Recommended Layout with Input Filter
To meet conducted emissions EN55022 CLASS B needed the following components:
PXF40-12Sxx
Component Value Voltage Reference
C1,C3 4.7uF 50V 1812 MLCC
C5,C6 1000pF 2KV 1808 MLCC
L1 450uH ---- Common Choke
PXF40-24Sxx
Component Value Voltage Reference
C1,C3 6.8uF 50V 1812 MLCC
C5,C6 1000pF 2KV 1808 MLCC
L1 450uH ---- Common Choke
PXF40-48Sxx
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