FSQ0365_07 Datasheet, PDF (16/24 Pages) Fairchild Semiconductor – Green Mode Fairchild Power Switch (FPS™) for Valley Switching Converter

Typical Application Circuit of FSQ0365RN
Application FPS Device
DVD Player
Power Supply
FSQ0365RN
Input Voltage
Range
85-265V_AC
Rated Output Power
19W
Output Voltage
(Max. Current)
5.1V (1.0A)
3.4V (1.0A)
12V (0.4A)
16V (0.3A)
Features
„ High efficiency ( >77% at universal input)
„ Low standby mode power consumption (<1W at 230V_AC input and 0.5W load)
„ Reduce EMI noise through Valley Switching operation
„ Enhanced system reliability through various protection functions
„ Internal soft-start (15ms)
Key Design Notes
„ The delay time for overload protection is designed to be about 30ms with C107 of 47nF. If faster/slower triggering of
OLP is required, C107 can be changed to a smaller/larger value (eg. 100nF for 60ms).
„ The input voltage of V_sync must be higher than -0.3V. By proper voltage sharing by R106 & R107 resistors, the input
voltage can be adjusted.
„ The SMD-type 100nF capacitor must be placed as close as possible to V_CC pin to avoid malfunction by abrupt pul-
sating noises and to improved surge immunity.
1. Schematic
RT101
5D-9
C103
33μF
400V
2
1
BD101
Bridge
3
Diode
4
C102
100nF,275V_AC
R105
100kΩ
LF101
40mH
C101
100nF
275V_AC
TNR
10D471K
AC IN
F101
FUSE
R102
56kΩ
C105
47nF
50V
C104
10nF
630V
R108
62Ω
D101
1N 4007
IC101
FSQ0365RN
5 _Vstr
4
Sync
Drain ⁸
Drain ⁷
Drain ⁶
3 _FB
V_cc ²
GND
1
C106 C107
100nF 22μF
SMD 50V
D102
1N 4004
R103
5Ω
R104
12kΩ
ZD101
1N4746A
C110
33pF
50V
T101
EER2828
C209
47pF
1
11
D201
UF4003
C210
2
47pF
L201
C201
470μF
35V
L202
C202
470μF
35V
3
10 D202
C203
C204
UF4003
470μF
470μF
35V
35V
12
L203
6
C205
4
D203
SB360
1000μF
10V
5
9
L204
D204
SB360
C207
1000μF
10V
16V, 0.3A
12V, 0.4A
5.1V, 1A
C206
1000μF
10V
C208
1000μF
10V
3.4V, 1A
8
C302
3.3nF
R201
510Ω
R202
1kΩ
IC202
FOD817A
IC201
KA431
R204 C209
20kΩ 100nF
R205
6kΩ
R203
6.2kΩ
FSQ0365RN Rev:00
Figure 29. Demo Circuit of FSQ0365RN
© 2006 Fairchild Semiconductor Corporation
FSQ0365, FSQ0265, FSQ0165, FSQ321, FSQ311 Rev. 1.0.4
16
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