FA5695 Datasheet, PDF (21/21 Pages) Fuji Electric – Fuji Switching Power Supply Control IC

FA5695
(2) Example of GND wiring around IC
(Note)
This wiring example is to make users understand the idea of GND wiring. The occurrence conditions of noise and
malfunction are different depending on each application circuit, and it is not to guarantee that all application circuit
will normally operate even if you use this wiring example (Fig. 32).
VCC OUT GND IS
FSAP5C6790511F
FB COMP RT OVP
OVP RT COMP FB
S_FP_AC₅7₆0₉1₅1F
IS GND OUT VCC
Fig.32 Good example of GND wiring around IC
13 Example of application circuit
Fig.33 Bad example of GND wiring around IC
90 to 264Vac
F101
6.3A
L1
R101
510k
J101
R102
510k
N3
R103
510k
ZT101
L101
C101
0.47u
C102
1000p L102
TH101
C105
2200p ^5D22
C104
0.47u
D101
600V25A
C103
1000p
C106
2200p
R210
68k
C206
0.15u
C205
0.15u
C212
0.01u
R211
47k
L201 180µH YG952S6RP
C201
1µ
R201
0.068
ERA91-02
D204
R208
22
R209
47k
D203
R207
100
Q201 D201
FMH21N50ES
C213
220p
R215
R222
2200k
R216 2200k
R223
R217
2200k
R224
R218
R219
680k
2200k
R225
680k
R220 47k
R226
680k
R221 3.9k
R227
VR201
51k
IC201
FB VCC
COMP OUT
RT GND
OVP IS
SP^FC^A7⁵0⁶1⁹1⁵F
C209
0.1u
C214
1000p
C208
2200p
R213
47
C210
1000p
R214 C211
100k 56u
D205
GND
VCC
12
J202
C202
220u
390 V
1
200 W
J201
4
GND
Fuji Electric Co., Ltd.
AN-073E Rev.1.1
April-2011
http://www.fujielectric.co.jp/products/semiconductor/
21