FA5546 Datasheet, PDF (26/27 Pages) Fuji Electric – Switching Power Supply Control IC

10. Application circuit example
FA5546/47
・Vout=19Vdc, Iout=3.6A (Po=68w) Input voltage=80Vac to 264Vac (DEMO Board)
Caution
VH Pin is connected to near by diode bridge(DS1) to avoid VH Pin’s surge voltage it happens by change of startup
current when startup circuit repeats on-off operating.
・Part List
Component Ｉｔｅｍ
Type or Value
Qty Component Ｉｔｅｍ
Type or Value
Qty
IC1
IC
FA5546/FA5547 (Fuji)
1 R1,2
resistor
1MΩ
2
IC2
IC
TA76431F
1 R3
resistor
47k Ω
1
TR1
FET
2SK3677-01MR (Fuji)
1 R5
resistor
0.68Ω
1
DS1
diode
D5SBA60
1 R6
resistor
10k Ω
1
DS2
diode
YG868C15R (Fuji)
1 R7
resistor
68Ω
1
D2
diode
EG01C
1 R8
resistor
10 Ω
1
D3,6
diode
ERA92-02 (Fuji)
2 R11
resistor
2.2kΩ
1
D4
diode
D1N60
1 R14
resistor
13k Ω
1
PC1
PhotoCoupler TLP421F
1 R16
resistor
5.1k Ω
1
EER28
R21
resistor
2.2 Ω
1
T1
transformer
1
(Np : Ns : Nb = 63 : 11 : 9)
R22
resistor
1.2k Ω
1
L1
coil
12mH
1 R23
resistor
360k Ω
1
L3
coil
3.3uH
1 R24
resistor
33k Ω
1
F1
Fuse
3.15A
1 R31
resistor
10 Ω
1
C1
Film capacitor 0.47uF
1 R33
resistor
3.3k Ω
1
C2
Film capacitor 0.22uF
1 R34
resistor
1k Ω
1
C5
capacitor
220uF
1 R35
resistor
10k Ω
1
C6,40
capacitor
0.01uF
2 R36
resistor
15k Ω
1
C9
capacitor
1uF
1 R37
resistor
1k Ω
1
C11
capacitor
0.01uF
1 R38
resistor
2.4k Ω
1
C12
capacitor
220pF
1 TH1
Power thermistor10Ω
1
C13,16
capacitor
0.1uF
2 TH2
thermistor
100k Ω
1
C14
capacitor
22uF
1 ZNR1
Surge absorber 680V
1
C36,37,38 capacitor
0.1uF
3
C29
capacitor
2200pF
1
C30
capacitor
2200pF
1
C31
capacitor
1500pF
1
C32,33,34,35 capacitor
470uF
4
Note)
This application circuit example shows typical directions for use of this IC for reference and does not guarantee the operation
and characteristics.
Fuji Electric Co., Ltd.
AN-027E Rev.0.4
April -2011
26
http://www.fujielectric.co.jp/products/semiconductor/