Recommended Filter for EN55022 Class B Compliance
The components used in the above figure, together with the
manufacturers’ part numbers for these components, are as
follows:
L1
450μH
3.3μF/50V 3.3μF/50V 1000pF/2KV 1000pF/2KV Common
FED20-12xxx
1812 MLCC 1812 MLCC
MLCC
MLCC
Choke
PMT-048
450μH
4.7μF/50V
1000pF/2KV 1000pF/2KV Common
FED20-24xxx
N/A
1812 MLCC
MLCC
MLCC
Choke
PMT-048
325μH
2.2μF/100V 2.2μF/100V 1000pF/2KV 1000pF/2KV Common
FED20-48xxx
1812 MLCC 1812 MLCC
MLCC
MLCC
Choke
PMT-050
C1
C2
C3
C4
1. All dimensions in Inches (mm)
Tolerance: X.XX±0.02 (X.X±0.5)
X.XXX±0.01 (X.XX±0.25)
2. Pin pitch tolerance
±0.01(0.25)
3. Pin dimension tolerance
±0.004
(0.1)
PIN CONNECTION
PIN
1
2
3
4
5
6
SINGLE
+ INPUT
- INPUT
+ OUTPUT
TRIM
- OUTPUT
CTRL
DUAL
+ INPUT
- INPUT
+ OUTPUT
COMMON
- OUTPUT
CTRL
EXTERNAL OUTPUT TRIMMING
Output can be externally trimmed
by using the method shown below.
TRIM UP
TRIM DOWN
5
4
R
U
4
3
R
D
Recommended EN55022 Class B Filter Circuit Layout
Page 3 of 3
Issued Date：2008/05/21
P-DUKE [ POWER MATE TECHNOLOGY CO., LTD ]
