120
OUTPUT POWER (%)
QEB75-48S05 Derating Curve
100
80
60
40
20
0
-40
0 LFM
100 LFM
200 LFM
300 LFM
400 LFM
500 LFM
24
-20
0
20
40
60
80
100
120
AMBIENT TEMPERATURE(℃)
QEB75-48S05 Derating Curve
With Heatsink 7G-0029 (Note 7 )
120
OUTPUT POWER(%)
100
80
60
40
20
0
-40
-20
0
20
34
40
Recommended Filter for EN55022 Class B Compliance
0 LFM
100 LFM
200 LFM
300 LFM
400 LFM
500 LFM
60
80
100
120
The components used in the above figure, together with the
manufacturers’ part numbers for these components, are as follows:
C1
6.8μF/50V
C6
1.5nF/3KV
QEB75-24Sxx
C11
0.1μF/50V
L1
620μH
C2
6.8μF/50V
C7
6.8μF/50V
C12
1.0nF/3KV
L2
620μH
C3
6.8μF/50V
C8
6.8μF/50V
C13
1.0nF/3KV
C4
6.8μF/50V
C9
6.8μF/50V
C14
1.0nF/3KV
C5
1.5nF/3KV
C10
0.1μF/50V
C15
1.0nF/3KV
AMBIENT TEMPERATURE(℃)
QEB75-48S05
Efficiency VS Input voltage
92
91
90
89
88
87
86
85
36
40
44
48
52
56
60
64
68
72
EFFICIENCY(%)
INPUT VOLTAGE(V)
QEB75-48S05
Efficiency VS Output Load
EFFICIENCY(%)
95
90
85
80
75
70
65
60
10
20
30
40
50
60
70
80
90
100
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
QEB75-48Sxx
C11
C12
C13
C14
C15
0.1μF/50V 1.0nF/3KV 1.0nF/3KV 1.0nF/3KV 1.0nF/3KV
L1
L2
620μH
620μH
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 ]
