Datasheet

DataSheet
40W, Dual Output
VER:00 Page 15 of 22 Issued Date：2009/03/02
EMC Considerations (Continued)
Suggested Schematic for EN55022 Conducted Emissions Class B Limits
RecommendedLayout with Input Filter
To meet conducted emissions EN55022 CLASS B neededthe following components：
PXF40-24WDxx
Component Value Voltage Reference
C1,C3 4.7uF 50V 1812 MLCC
C5,C6 1000pF 2KV 1206 MLCC
L1 450uH ---- Common Choke
PXF40-48WDxx
Component Value Voltage Reference
C1,C2 2.2uF 100V 1812 MLCC
C3,C4 2.2uF 100V 1812 MLCC
C5,C6 1000pF 2KV 1206 MLCC
L1 830uH ---- Common Choke
This Common Choke L1 is defined asfollows:
■
L: 450μH±35% / DCR: 25mΩ, max
Aheight：9.8 mm, Max
■
L: 830μH±35% / DCR: 31mΩ, max
Aheight: 8.8 mm, Max
■ Test condition: 100KHz / 100mV
■ Recommended through hole; Φ0.8mm
■ All dimensions in millimeters