AB-62| Application Note
www.fairchildsemi.com
AB-62 Color-TV Applications FSCQ1565RT - 160 Watts
Application Output Power Input Voltage Universal Input (90-270Vac) Output Voltage (Max Current) 8.5V (0.5A) C-TV 160W 15V (0.5A) 140V (0.7A) 24V (1.5A)
Features
High Efficiency (>83% at 90Vac Input) Wider Load Range through the Extended Quasi-Resonant Operation Low Standby Mode Power Consumption (<1W) Low Component Count Enhanced System Reliability through Various Protection Functions Internal Soft-start (20ms)
1. Schematic Diagram
T1 EER4245 RT101 6D-22 C102 470uF 400V R101 100k 0.25W 1 10 C210 470pF 1kV D204 EGP20D 4 R106 C104 1k 10uF 1W 50V SYNC 5 D106 1N4148 R104 D103 R103 6 1.5k 1N4937 5.1 0.25W 0.25W C105 2.7nF 50V 7 LF101 14 15 16 C207 470pF 1kV D203 EGP30D 17 C208 470pF 1kV 24V, 1.5A C203 1000uF 35V C107 1nF 1kV 13 C209 470pF 1kV D202 EGP30J L202 C201 BEAD 220uF 160V 140V, 0.8A C202 68uF 160V 8.5V, 0.5A C205 1000uF 35V D205 EGP20D 15V, 0.5A C204 1000uF 35V
3 R102 150k 0.25W BEAD101
11
BD101
1 Drain ZD102 18V 1W 3 Vcc IC101 FSCQ1565RT GND 2 FB 4
D105 1N4937
12
C103 10uF 50V
C106 47nF 50V
R105 470 0.25W
18
OPTO101 FOD817A C101 330nF 275VAC FUSE 250V 5.0A C301 3.3nF
R201 1k 0.25W R202 1k 0.25W
VR201 30k ZD201 5.1V 0.5W R208 1k 0.25W
C206 150nF 50V
R203 39k 0.25W
R205 240k D201 0.25W 1N4148
Q201 KA431 LZ
R204 4.7k 0.25W
Q202 KSC945
SW201 R207 5.1k 0.25W R206 10k 0.25W
Rev.1.0 10/14/05
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