MAS 101-102-111 - Harman Kardon Audio Service Manual (repair manual). Page 19

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© 2007 Fairchild Semiconductor Corporation 
 
www.fairchildsemi.com 
FSFR series  •  Rev.1.0.5 
FSFR-
S
eries — Fairchild Power Swit
ch (
F
P
S

) for Ha
lf-Bri
dge
 Resonant Converter 
Application Circuit Diagram
 
R
sense
 
Control 
IC
C
DL
V
CC
V
DL
LVcc
RT
CON
CS
SG
PG
V
CTR
HV
CC
Cr
L
lk
Lm
Ns
Vo
D1
D2
R
F
C
F
Np
Ns
KA431
V
IN
 
 
Figure 1.  Typical Application Circuit (LLC Resonant Half-Bridge Converter) 
 
Block Diagram 
1.5 s
μ
 
Figure 2.  Internal Block Diagram 
17
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