Samsung SV-DVD50 Service Manual page 107

(3) Internal Block Diagram
(a) Internal Block Diagram of S.M.P.S. Circuit
Smoothing
Circuit
Rectified Circuit
Line Filter
Power IN
(220V)
(b) IC1SF01 (ICE2B0565) Internal Block Diagram
SoftS
FB
PWM- C ontroller
Noise
Converter
Removal
(SNUBBER)
PWM Control
Circuit
(ICE2B0565)
Voltage
Detection
Circuit
Lo w P ow er Po wer
St an dB y Ma nag em en t
So ft-St art Co nt ro l
Pr otecti on Unit
33V Rectified
Smoothing Circuit
24V Rectified
Smoothing Circuit
5V Rectified
Smoothing Circuit
15V Rectified
Smoothing Circuit
Fig. 7-9
VCC
PW M Co nt rolle r
Cu rren t Mo de
Pr ec ise Low Tol eran ce
Pe ak Cu rrent Lim itat ion
Fig. 7-10
Circuit Operating Descriptions
5V Rectified
VoltageCircuit(X2)
9V Rectified
VoltageCircuit
12V Rectified
VoltageCircuit
Drain
Co olMO S"
Isense
GND
O
U
T
P
U
T
7-5