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:
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)
C1
C2
C3
C4
C5 & C6
L1
450μH
FEC60-
24xxx
4.7μF/50V
1812MLCC
4.7μF/50V
1812MLCC
1000pF/2KV Common
MLCC
N/A
N/A
Choke
PMT-048
830μH
FEC60- 2.2μF/100V 2.2μF/100V 2.2μF/100V
48xxx 1812MLCC 1812MLCC 1812MLCC
1000pF/2KV Common
N/A
MLCC
Choke
PMT-053
PIN CONNECTION
PIN
1
2
SINGLE
+INPUT
-INPUT
3
CTRL
4
5
6
7
-SENSE
+SENSE
+OUTPUT
-OUTPUT
TRIM
8
EXTERNAL OUTPUT TRIMMING
Output can be externally trimmed by
using the method shown below.
TRIM DOWN
8
TRIM UP
4
RU
RD
5
8
Recommended EN55022 Class B Filter Circuit Layout
Page 3 of 3 Issued Date:2008/06/12