?2008 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FAN9611 " Rev. 1.1.7
3
Typical Application Diagram
Figure 3. Typical Application Diagram
Block Diagram
Figure 4. Block Diagram
V
OUT
D2
D1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
CS2
CS1
VDD
DRV1
DRV2
PGND
VIN
OVP
FB
COMP
SS
AGND
MOT
5VB
ZCD2
ZCD1
L2a
AC IN
C
IN
L1a
R
ZCD2
R
ZCD1
C
5VB
R
MOT
CSS
RCOMP
CCOMP ,HF
Q2
RCS1
RCS2
COUT
Q1
V
BIAS
R
FB1
RFB2
ROV1
R
OV2
R
IN1
RIN2
R
G2
R
G1
RINHYST
VIN
V LINE
EMI Filter
CCOMP,LF
L1b
L2b
C
VDD1
C
VDD2
CINF
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