FSCQ FAIRCHILD [Fairchild Semiconductor], FSCQ Datasheet - Page 26

• Manufacturer Part Number: FSCQ
• Description: Green Mode Fairchild Power Switch (FPS)
• Manufacturer: FAIRCHILD [Fairchild Semiconductor]

FSCQ-SERIES
FSCQ0965RT Typical Application Circuit
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)
Key Design Notes
• 24V output is designed to drop to around 8V in standby mode
1. Schematic
26
BD101
Application
275VAC
LF101
330nF
C101
C-TV
RT101
5D-9
100kΩ
0.25W
R101
220uF
C102
400V
UF4007
D104
FUSE
250V
3.0A
ZD101
18V
1W
150kΩ
0.25W
R102
3
Output Power
C103
10uF
50V
Vcc
FSCQ0965RT
2
GND
102W
Drain
1
IC101
4
FB
SYNC
C106
47nF
50V
BEAD101
5
1.5kΩ
R106
1W
1N4148
0.25W
C104
D103
10uF
R105
470Ω
50V
0.25W
1.5kΩ
R104
1N4937
3.9nF
C105
50V
D102
Universal input
1N4937
Input Voltage
D101
(90-270Vac)
0.25W
R103
5.1Ω
C107
OPTO101
FOD817A
1nF
1kV
1
3
4
7
2.2nF
C301
6
ZD201
EER3540
T1
13
17
10
11
12
18
14
15
16
KA431
Q201
0.25W
R201
1kΩ
EGP20D
EGP30D
EGP30J
EGP20D
D204
D203
470pF
470pF
470pF
D202
470pF
D205
C210
C209
C208
C207
1kV
1kV
1kV
1kV
0.25W
R202
1kΩ
C206
22nF
50V
Output Voltage (Max Current)
220kΩ
0.25W
R205
0.25W
1000uF
1000uF
R203
39kΩ
1000uF
100uF
C205
C203
C201
160V
C204
35V
35V
35V
0.25W
4.7kΩ
R204
BEAD
L201
125V (0.5A)
12V (0.5A)
18V (0.5A)
24V (1.0A)
VR201
D201
30kΩ
KSC945
Q202
C202
47uF
160V
0.25W
R208
ZD202
1kΩ
0.5W
5.1V
0.25W
5.1kΩ
0.25W
5.1kΩ
R206
R207
SW201
12V, 0.5A
18V, 0.5A
125V, 0.5A
24V, 1.0A
Normal
Standby