FAN6210 Datasheet, PDF (9/11 Pages) Fairchild Semiconductor – Primary-Side Synchronous Rectifier (SR) Trigger Controller for Dual Forward Converter

Typical Application Circuit (Dual-Forward Converter with SR)
Application
PC Power
Fairchild Devices
FAN480X
FAN6210
FSR660
FSR630
Input Voltage Range
90~264VAC
Output
12V/16.5A
5V/18A
VIN
VAC PFC stage
(primary 300µH)
1:1.2
100µF
FCP20N60
4.7
10k
1N4148
UF1007
74:7
10k
10k
1:1.2
4.7
1N4148
FR107
IPWM
470
(To FAN480X)
470pF
FCP20N60
UF1007
10k
56µH
1 63
110k
DET LPC VDD
10k
DET
1
5 SN
GND
2
10k
LPC 6
4 SP VDD 3
FSR660
GND
2
FSR660
SN SP
54
11µH
1.8µH
VO=12V
2200µF
2200µF
2µH
VO=5V
10
10
OPWM
(From FAN480X)
1N4148 ^8.2k
0.15
74:3
1 XP GND 8
2 XN SOUT 7
3 SIN VDD 6
4 RDLY DET 5
10k
ZD/5.6V
FAN6210
1N4148
From VDD
of FAN480X
1N4148
1N4148
1:1
1N4148 _(160µH)
20k
5.1k
DET
1
5 SN
GND
2
10k
LPC 6
4 SP VDD 3
FSR630
1 63
DET LPC VDD
GND
2
FSR630
SN SP
54
330µF
220µF
12V
5V
3k
30k
15k
PC817
1k 1µF
Figure 18. Application Circuit
TL431
5.1k
© 2009 Fairchild Semiconductor Corporation
FAN6210 Rev. 1.0.1
9
www.fairchildsemi.com