FSCQ0565RT Fairchild Semiconductor, FSCQ0565RT Datasheet - Page 30

• Manufacturer Part Number: FSCQ0565RT
• Description: A Quasi-Resonant Converter (QRC) typically shows lower EMI and higher power conversion efficiency compared to conventional hard-switched converter with a fixed switching frequency
• Manufacturer: Fairchild Semiconductor

FSCQ-Series Rev. 1.1.2
FSCQ1265RT Typical Application Circuit
Features
1. Schematic
High Efficiency (>83% at 90 Vac 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)
BD101
Application
275VAC
LF101
330nF
C101
C-TV
100k
0.25W
RT101
R101
5D-11
330 F
C102
400V
FUSE
250V
5.0A
ZD102
18V
1W
150k
0.25W
R102
3
C103
10 F
Output Power
50V
Vcc
2
FSCQ1265RT
GND
1
Drain
IC101
132W
4
FB
SYNC
C106
47nF
50V
BEAD101
5
R106
1k
1W
1N4148
0.25W
D106
C104
10 F
R105
470
50V
0.25W
1.5k
R104
1N4937
3.3nF
C105
D105
50V
1N4937
D103
Input Voltage
Universal input
(90–270 Vac)
0.25W
R103
5.1
30
C107
1nF
1kV
1
3
4
7
6
OPTO101
FOD817A
Key Design Notes
EER4042
3.3nF
C301
T1
24V output is designed to drop to around 8V in
standby mode
13
17
10
11
12
18
14
15
16
KA431
Q201
LZ
EGP20D
EGP30D
EGP30J
EGP20D
0.25W
D204
D203
R201
470pF
470pF
D202
470pF
470pF
1k
D205
C210
C209
C207
C208
1kV
1kV
1kV
1kV
0.25W
R202
1k
Output Voltage (Max Current)
150nF
1000 F
1000 F
C206
1000 F
150 F
50V
C205
C203
C201
160V
C204
35V
35V
35V
BEAD
L202
0.25W
39k
R203
140V (0.6A)
8.5V (0.5A)
15V (0.5A)
24V (1.5A)
240k
C202
68 F
160V
0.25W
0.25W
R205
4.7k
R204
VR201
30k
1N4148
D201
KSC945
Q202
www.fairchildsemi.com
0.25W
R208
ZD201
1k
0.5W
5.1V
15V, 0.5A
8.5V, 0.5A
140V, 0.6A
24V, 1.5A
0.25W
5.1k
0.25W
R206
10k
R207
SW201