FA5540 Fuji Electric holdings CO.,Ltd, FA5540 Datasheet - Page 32

• Manufacturer Part Number: FA5540
• Description: Fuji Switching Power Supply Control Ic
• Manufacturer: Fuji Electric holdings CO.,Ltd

11. Example of application circuit
(1) Application circuit example 1
(2) Application circuit example 2
Rev.0.1 Mar-2007
80 to
80 to
FG
FG
These application examples show common specification for FA5540/41/42. The same circuitry can be adapted
for FA5540/41/42 except the setting of Vcc pin voltage and the transformer designing that depends on a
switching frequency. (L value and winding ratio of the transformer for FA5541/42 are shown in the figure
below).
264Vac
264Vac
22pF
22pF
(VH pin (No.8) for startup is connected to AC side in order to speed up latch-reset after AC shutdown)
250V/3A
250V/3A
1M
1M
1M
1M
1000pF
1000pF
0.22uF 470pF
0.22uF 470pF
100k
100k
470pF
470pF
4700pF
4700pF
7mH
7mH
100 ohm
100 ohm
D3SBA60
D3SBA60
1
2
3
4
FA5540
FA5541
FA5542
1
2
3
4
FA5540
FA5541
FA5542
ERA15-01
ERA15-01
7.5k
7.5k
8
7
6
5
8
7
6
5
33uF
50V
33uF
50V
SC902-2
SC902-2
220μF
400V
220μF
400V
10
ohm
100
ohm
10
ohm
100
ohm
4.7 ohm
4.7 ohm
ERA38-06
ERA38-06
FA5540／41／42
2SK3687
2SK3687
56k
56k
ERA22-02
4.7k
4.7k
ERA22-02
2200pF
2200pF
0.22 ohm
0.22 ohm
220pF
220pF
Cd
Cd
2200pF
2200pF
T1
T1
32
T1
Np:Ns:Nsub=57:10:12
Lp=360uH
T1
Np:Ns:Nsub=57:10:12
Lp=360uH
Bead
Bead
D21
D21
4700pF
4700pF
YG865C15R×2
YG865C15R×2
Fuji Electric Device Technology
Semiconductor
Semiconductor
0.022uF
0.022uF
3300uF×3
35V
(9900μF)
3300uF×3
35V
(9900μF)
National
LMV431
National
LMV431
10k
10k
2k
2k
1000uF
35V
1000uF
35V
4.7uH
4.7uH
10k
10k
2200pF
2200pF
0.01uF
0.01uF
200k
200k
19V / 0 to 5A
19V / 0 to 5A
18k
15k
18k
15k
0.1uF
0.1uF
GND
GND