QEB125-48S05 Derating Curve
120
100
80
60
40
20
0
0 LFM
100 LFM
200 LFM
300 LFM
400 LFM
500 LFM
-27
-20
-40
0
20
40
60
80
100
120
AMBIENT TEMPERATURE(
)
℃
QEB125-48S05 Derating Curve
With Heatsink 7G-0029 (Note 7 )
120
100
80
60
40
20
0
0 LFM
100 LFM
200 LFM
300 LFM
400 LFM
500 LFM
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:
C1
6.8μF/50V 6.8μF/50V 6.8μF/50V 6.8μF/50V 1.5nF/3KV
C6 C7 C8 C9 C10
1.5nF/3KV 6.8μF/50V 6.8μF/50V 6.8μF/50V 0.1μF/50V
C2
C3
C4
C5
-40
-20
0
20
40
60
80
100
120
-10
AMBIENT TEMPERATURE(
)
℃
QEB125-48S05
Efficiency VS Input voltage
QEB125-24Sxx
C11
C12
C13
C14
C15
0.1μF/50V 1.0nF/3KV 1.0nF/3KV 1.0nF/3KV 1.0nF/3KV
92
91
90
89
88
87
86
85
L1
L2
622μH
224μH
C1
C2
C3
C4
C5
100μF/100V 1.5μF/100V 1.5μF/100V 1.5μF/100V 1.5nF/3KV
C6 C7 C8 C9 C10
1.5nF/3KV 47μF/100V 1.5μF/100V 1.5μF/100V 0.1μF/50V
36
40
44
48
52
56
60
64
68
72
INPUT VOLTAGE(V)
QEB125-48Sxx
C11
C12
C13
C14
C15
QEB125-48S05
Efficiency VS Output Load
0.1μF/50V 1.0nF/3KV 1.0nF/3KV 1.0nF/3KV 1.0nF/3KV
L1
L2
95
90
85
80
75
70
65
60
620μH
620μH
10
20
30
40
50
60
70
80
90
100
OUTPUT LOAD (% of Full Load)
Recommended EN55022 Class B Filter Circuit Layout
Page 4 of 4 Issued Date：2008/05/21
P-DUKE [ POWER MATE TECHNOLOGY CO., LTD ]
