FEC40-48S05 Derating Curve
120
100
80
60
40
20
0
-40
-20
0
20
40
5690.1
80
100
120
AMBIENT TEMPERATURE(℃)
FEC40-48S05 Derating Curve
(Note 13)
With Heatsink (Note 10 )
120
100
80
60
40
20
0
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:
66.2
-40
-20
0
20
40
60
80
100
120
AMBIENT TEMPERATURE(℃)
C1
C2
C3
C4
C5 & C6
L1
450μH
FEC40- 4.7μF/50V
12xxx 1812 MLCC
4.7μF/50V
1812 MLCC
1000pF/2KV Common
N/A
N/A
MLCC
Choke
PMT-048
450μH
FEC40-48S05
Efficiency VS Input Voltage
FEC40- 6.8μF/50V
24xxx 1812 MLCC
6.8μF/50V
1812 MLCC
1000pF/2KV Common
N/A
N/A
MLCC
Choke
PMT-048
830μH
91%
89%
87%
85%
83%
81%
79%
77%
75%
FEC40- 2.2μF/100V 2.2μF/100V 2.2μF/100V 2.2μF/100V 1000pF/2KV Common
48xxx 1812 MLCC 1812 MLCC 1812 MLCC 1812 MLCC
MLCC
Choke
PMT-053
36
40
44
48
52
56
60
64
68
72
INPUT VOLTAGE (V)
FEC40-48S05
Efficiency VS Output Load
95
90
85
80
75
70
65
60
55
50
45
10
20
30
40
50
60
70
80
90
100
Recommended EN55022 Class B Filter Circuit Layout
OUTPUT LOAD (% of Full Load)
Page 3 of 4 Issued Date：2008/06/12
P-DUKE [ POWER MATE TECHNOLOGY CO., LTD ]
