Panasonic LUMIX DC-G9P, Service Manual

Page: 71 / 75

71
12.13. Power (3) Block Diagram
DC-G9 POWER(3) BLOCK DIAGRAM
IC6402
(SYSTEM IC)
IS2001
(VENUS ENGINE)
PW UNREG SYS
(PW DRAM1.2V)
(PW DRAM1.8V)
IC2503
(REGULATOR)
2
3
4 1 VOUT
GND
VCC
CE
IC2502
(REGULATOR)
2 3
4 1 VOUT
GND
VCC
CE
IC2504
(LOAD SW)
3 2
1 4 VOUT
VIN
GND
CE
BE35
BC35
T2
N1
N3
E3
B20
A7
BA37
BG37
GND
IC2506
(LOAD SW)
4
3
1 VOUT VIN
CE
QR2501
QR1601
(SHT6R5V CTL1)
VREGA
(From IC1001-29)
PW UNREG
IC1911
(DC/DC CONTROLLER)
(BACKUP CTL4)
BACKUP CTL4 K11
PW D1.8V
PW D1.2V
(BACKUP CTL3)
BACKUP CTL3 J9
2
PW SHT6.5V
CD1601
IC1601
(REGULATOR)
1
2
3 8
10
9
GDRV
VDD RC
DIS/EN
SS
BP
4 7
ISNS
COMP
5 6 GND FB
8 7 6 5
1 2 3 4
Q1601
PW EVER 3V
PW EVER 3V
GND
SW
SW
SW
SW
OC
ZC
XCON
BST
V5
PWM
TRIP
+
+
VSNS
EN
+
NOC
VREF
MODE
CONTROL
MODE
ON-TIME
SELECTION
CONTROL LOGIC
.
ON/OFF TIME
.
MINIMUM ON/OFF
.
SKIP/FCCM
.
OCL/OVP/UVP
.
DISCHARGE
V5OK
+
4.4 V/4.0 V
+
5-V UVLO
GSNS
DISCHARGE
PHASE
COMPENSATION
ULQ
CONTROL
T
ON
ONE-
SHOT
REFIN
REFIN2
SLEW
+
V
REFIN
VIN
VIN
VIN
PGND
PGND
PGND
PGND
PGND
LP#
OCL
REFERENCE
VOLTAGE
REFERENCE
DETECTION
REFERENCE
SOFT-START
TRIP
DETECTION
28
21
26
3
5
15
16
17
7
6
9
18
12
13
14
19
11
10
8
23
25
24
20
2
T4
D12
IC1901
(REGULATOR)
4 3
1
5 2
6
VSS NC
CE VIN
NC VOUT
PW D1.0V B
PW D1.0V A
PW D1.0V
CD1911
22
IC1951
(DC/DC CONTROLLER)
GND
SW
SW
SW
SW
OC
ZC
XCON
BST
V5
PWM
TRIP
+
+
VSNS
EN
+
NOC
VREF
MODE
CONTROL
MODE
ON-TIME
SELECTION
CONTROL LOGIC
.
ON/OFF TIME
.
MINIMUM ON/OFF
.
SKIP/FCCM
.
OCL/OVP/UVP
.
DISCHARGE
V5OK
+
4.4 V/4.0 V
+
5-V UVLO
GSNS
DISCHARGE
PHASE
COMPENSATION
ULQ
CONTROL
T
ON
ONE-
SHOT
REFIN
REFIN2
SLEW
+
V
REFIN
VIN
VIN
VIN
PGND
PGND
PGND
PGND
PGND
LP#
OCL
REFERENCE
VOLTAGE
REFERENCE
DETECTION
REFERENCE
SOFT-START
TRIP
DETECTION
28
21
26
3
5
15
16
17
7
6
9
18
12
13
14
19
11
10
8
23
25
24
20
2
PW D0.9V
CD1951
22
CH1 1.22V
SHT UNREG
PW REGOUT 5V
POW CTL 1
(From IC1502-18)
Q1603
Q1602
BK26
(SHT6R5V CTL2)
BJ27
D10
E11
(BACKUP CTL1)
BACKUP CTL1 K9
PW SHT6.5V
CD1901
CD1602
CD1603