Read Panasonic SV-AS10EB / SV-AS10EG / SV-AS10GC / SV-AS10GN (serv.man2) Service Manual online
9 BLOCK DIAGRAMS
9.1. POWER SUPPLY BLOCK DIAGRAM
POWER SUPPLY CIRCUIT BLOCK DIAGRAM
IC1501
(DC-DC CONVERTER)
6
5
4
3
1
LOGIC
PHASE
COMPEN-
SATION
BUFFER
DRIVER
LX
CURRENT
LIMIT &FEEDBACK
RAMP WAVE
GENERATOR,OSC
PWM/PFM
SELECT-
OR
CE/MODE
CONTROL LOGIC
2
VREF WITH
SOFT START,
CE
U.V.L.O
Vss
VOUT
CE/
MODE
Vss
VIN
IC1506
(DC-DC CONTROLLER)
5
4
2
1
PHASE
COMPEN-
SATION
BUFFER
DRIVER
EXT
RAMP WAVE
GENERATOR,
OSC
PWM/PFM
SELECTOR
3
VREF WITH
SOFT START,
CE
Vss
CE
NC
FB
CURRENT
RIPPLE DETECT
AND FB
6
V
DD
Error Amp.
PWM
Comparator
PWM
Comparator
Error Amp.
U.V.L.O Comp.
Pch
Driver Tr.
Nch
SW Tr.
IC1502
(DC-DC CONTROLLER)
5
4
2
1
PHASE
COMPEN-
SATION
BUFFER
DRIVER
EXT
RAMP WAVE
GENERATOR,
OSC
PWM/PFM
SELECTOR
3
VREF WITH
SOFT START,
CE
Vss
CE
NC
FB
CURRENT
RIPPLE DETECT
AND FB
6
V
DD
Error Amp.
PWM
Comparator
IC1503
(REGULATOR)
5
4
2
1
CURRENT
LIMIT
VIN
3
Vss
NC
NC
CE
6
ON/OFF
CONTROL
VOLTAGE
REFERENCE
Each
Circuit
VOUT
IC1504
(REGULATOR)
5
4
2
1
CURRENT
LIMIT
VIN
3
Vss
NC
NC
CE
6
ON/OFF
CONTROL
VOLTAGE
REFERENCE
Each
Circuit
VOUT
5
4
2
1
CURRENT
LIMIT
VIN
3
Vss
NC
CE
ON/OFF
CONTROL
VOLTAGE
REFERENCE
Each
Circuit
VOUT
IC1505
(DC-DC
CONTROLLER)
CONTROLLER)
PWM/PFM
CONTROLLER
2
3
4
1
5
RAMP WAVE
GENERATOR1
Vref1=0.9V
WITH SOFT
START1,EN1
EN1 to Internal
Circuit
PWM/PFM
CONTROLLER
9
8
7
10
6
RAMP WAVE
GENERATOR2
EN2 to Internal
Circuit
OSC
GENERATOR
Error Amp1
Error Amp2
PWM COMPARATOR1
PWM COMPARATOR2
EN2
PWM2
FB2
GND
EXT2/
EXT1
V
DD
FB1
PWM1
EN1
Q1503
(POWER SUPPLY)
3
2
1
6
4
5
3
2
1
6
4
5
Q1502
(POWER SUPPLY)
1
2
3
4
5
D
S
G
1
2
3
4
5
D
S
G
L1503
3
2
1
6
4
5
S
D
G
Q1508
(SWITCHING)
L1506
D1506
L1501
1
2
3
4
5
D
S
G
L1504
Q1507
(POWER SUPPLY)
Q1504
(POWER SUPPLY)
1
2
3
4
5
D
S
G
Vref2=0.9V
WITH SOFT
START2,EN2
D
D
D
SV-AS10EB/EG/GC/GN POWER SUPPLY CIRCUIT BLOCK DIAGRAM
V
CC
1R5
V
CC
3R3CCD
V
CC
15CCD
V
CC
7R5NCCD
V
CC
3R3
V
CC
5SHT
V
CC
3R3AUD
V
CC
5LCD
POWER LCD
L
(IC3401-
)
239
1
2
3
4
8
7
6
5
S1
G1
S2
G2
D1
D1
D2
D2
POWER CCD (IC3401-
)
219
BATT+
DC
JACK
JACK
USBCRADLE
(ACCESSORY)
(ACCESSORY)
Q3802
(SWITCHING)
D3802
BATT AC
D3801
BAT+
BAT-
BATTERY
IC3108
(REGULATOR)
5
4
2
1
CURRENT
LIMIT
VIN
3
Vss
NC
NC
CE
6
ON/OFF
CONTROL
VOLTAGE
REFERENCE
Each
Circuit
VOUT
D3101
B3101
(BATTERY)
To IC3101 - 11
D3102
CHARGCONT
VIN
IC1507
(REGULATOR)
Q1506
(POWER SUPPLY)
D
S
G
Q3804
(BATT DET.)
BATT DET2 (IC3401-
)
317
Q1505
(POWER SUPPLY)
BATT DET (IC3401-
)
311
8
7
6
5
4
3
2
1
S
C
D
R
Q
Q
Vcc
CK
D
Q
GND
Q
CLR
PR
IC1001
(D-TYPE FLIP FLOP)
D
S
G
S1001
S
D
G
POWER SW
Q1002
(SWITCHING)
Q1001
(SWITCHING)
To IC3401- 315
To IC3401- 224
3
2
1
6
4
5
Q3101
(POWER SUPPLY)
To IC3104~3107- 315
POWER JOG (IC3401-
)
296
B3 IV
DD
L3403
Q3805
(AC DET.)
AC DET (IC3401-
)
312
BUSPOWER
USB VBUSDETN (IC3401-
)
316
QR3102
(SWITCHING)
SV-AS10EB / SV-AS10EG / SV-AS10GC / SV-AS10GN
17
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