Panasonic LUMIX DC-G9P, Service Manual

Page: 72 / 75

72
12.14. Power (4) Block Diagram
DC-G9 POWER(4) BLOCK DIAGRAM
IC6402
(SYSTEM IC)
IS2001
(VENUS ENGINE)
PW UNREG
PW WiFi3.5V
PW D3.5V
(BIS POWER ON)
IC1801
(SYNCHRONOUS STEP-DOWN CONVERTER)
6
5
SW
SW
SW
UGATE
LGATE
VIN
VIN
VIN
FB
EN
RIPPLE
GEN.
EN
VBIAS
REGULATOR
ON-TIME
GND
DRIVER
CONTROL
MIN OFF
UV & OV
2
1
BOOT
PVCC
PVCC
PVCC
GND
VREF
COMPARATOR
+
--
OC
3
4
SW
CD1752
CD1751
CD1851
HS LIM.
ERROR
AMP.
DCS-CONTROL
TM
COMP.
IC1751
(STEP DOWN CONVERTER)
2
15
16
12
SW
PVIN
FSW
GATE
DRIVE
POWER
CONTROL
CONTROL
LOGIC
13
PGND
PGND
SOFT
START
UVLO
THERMAL
SHUTDOWN
TIMER T
ON
DIRECT CONTROL
& CONPENSATION
PG ONTROL
7
VOS
14
FB
5
11
PVIN
AVIN
EN
9
SS/TR
8
DEF
LS LIM.
COMP.
1
SW
3
SW
COMP.
15
16
PGND
AGND
PGND
4
PG
+
-
10
6
HS LIM.
ERROR
AMP.
DCS-CONTROL
TM
COMP.
IC1851
(STEP DOWN CONVERTER)
2
15
16
12
SW
PVIN
FSW
GATE
DRIVE
POWER
CONTROL
CONTROL
LOGIC
13
PGND
PGND
SOFT
START
UVLO
THERMAL
SHUTDOWN
TIMER T
ON
DIRECT CONTROL
& CONPENSATION
PG ONTROL
7
VOS
14
FB
5
11
PVIN
AVIN
EN
9
SS/TR
8
DEF
LS LIM.
COMP.
1
SW
3
SW
COMP.
15
16
PGND
AGND
PGND
4
PG
+
-
10
6
AA45 PW BIS5.2V
PT1002
PIOB6
PW WIFI3.5V
CD1801
PW SD3.15V
CD1861
PW WIFI1.8V
PW D3.15V
IC3502
(REGULATOR)
3
2
4
6
1 VOUT
CE
VOUT
VIN
VSS
5 VIN
IC3503
(REGULATOR)
2 3
4
1 VOUT
VSS
VIN
CE
PW D3.15V
(IS PWR ON4)
PW D3.3V 1
PW D3.3V 2
D10
PW D3.15V
PW UNREG SYS
QR4001
IC4073
(DC/DC CONVERTER)
4
Q
S
R
CURRENT
SENSE
THERMAL
SHUTDOWN
CURRENT
LIMIT
OVP
UVLO
OSC
SOFT-START
CE
DRIVER
CONTROL
ERR.
AMP
PWM
COMP.
VOUT
GND
FB
LX
VCC
ENB
3
2
5
6
SLOPE
COM-
PENSATION
1
1 2 3
4 6 5
Q4001
(EVF 10R0V CTL2)
VREF
QR4002
6 5 4
3 1 2
PW D3.15V
PIOC2 D9
(EVF 10R0V CTL1)
PIOC1 C10
CD4012
CD4010
CD4008
PW EVF10V
CD4011
CD4013
Q3502
QR3502
Q3501
QR3501
IC3501
(REGULATOR)
2 3
4
1 VOUT
VSS
VIN
CE
PW D5.2V
PW SENS1.2V
PW ISD1.8V
PW D1.2V 21
PW D1.2V 11
IC1861
(REGULATOR)
3
2
4
6
1 VIN
VOUT
NC
CE
NC
5 VSS
(IS PWR ON3)
PIOB7 E8
PIOA1 C3
( IS PWR ON1)
(IS PWR ON2)
PIOA7 H9