LAPTOP POWER
Sequence
CHIP LEVEL LAPTOP REPAIR COURSE
Laptop Voltage requirement
Supply requirement on motherboard
ADOPTER INPUT VOLT 18V
Vin
Batary Charging Voltage 10.8v
CPU
1V or 0.8v,1.05v(30amp)
MCH
1.05v or 1.5v,1.8v
ICH
1.05 or 1.5v,1.8,3.3v,5v
DDR 2
1.8v,3.3v,0.9v
SIO(KBC)
3.3v
Clock chip
3.3v
BIOS
3.3v
Network chip
3.3v
Audio chip
3.3v
Audio amp
5v
Temp. sensor
3.3v
Card reader
3.3v
LCD supply
3.3v
Hard disk
5.0v
DVD writer
5.0v
USB
5.0
Volt In
section
18volt adopter or
battery supply
DCBAT B++
BEFORE POWER ON
LED
INVERTER
STEP
DOWN 1
3.3VSUS
3.3VOLT
5VOLT
Always voltage
RUN VOLTAGE
STEP DOWN 2
GFX
CORE VOLT
1.8V 1.5V 1.05v
1 TO 1.2VOLT
APPROX
5VSUS
CPU
CORE VOLT
1VOLT APPROX
30AMP
Laptop power sequence
HDD
Always voltage
5v
MOSFET
DVDW
Step
Down 1
ICH
3.3v
BATT
AC
Adopter
AMP
USB
SIO
VOLT IN
230volt
input
5v suspend voltage
BIOS
MOSFET
Suspend volt
1.05v
NETWORK
LCD VDD
AC97 AUDIOCON
3.3volt suspend voltage
ICH
MCH
Step
Down 2
1.8v
0.9v
CPU CORE volt
(VRM)
DDR2
vcccore
CPU
inverter
CORE i3 Laptop power sequence
HDD
Always voltage
5v
MOSFET
DVDW
Step
Down 1
5v suspend voltage
3.3v
BATT
AC
Adopter
USB
SIO
VOLT IN
230volt
input
AMP
BIOS
MOSFET
Suspend volt
1.8V
NETWORK
LCD VDD
AC97 AUDIOCON
3.3volt suspend voltage
1.05v
PCH
Step
Down 2
1.5v
0.75v
DDR3
CPU Core
CPU CORE volt
(VRM)
GFX Core volt
CPU
LED
BACKLIGHT
Normal resistance ON coil without CPU & RAM
Above 100 ohm
Vin voltage
CPU Core
supply
Battery Charging
Above 100 ohm
GFX core
Above
100 ohm
3.3volt
1.5volt
Above
100 ohm
1.05volt
Above 15 ohm
5volt
Above
100 ohm
1.8volt
6
LAPTOP CHIPS VOLTAGES
CPU
VCORE (1V Aprox
30Amp current)
2.5V (VDD)
1.25V (VTT )
Vtt CPU
1.8V (VDD)
0.9V (VTT DDR)
1.8V
3.3V
3.3V
LAN
3.3V (SPD)
1.05VCCP
1.05VCCP or 1.5v
DDR 1
MCH
North
bridge
5V
3.3V
DDR 2
3.3V
BIOS
5V
1.5V (VDD)
5V
DDR 3
5V
USB
AUDIO
3.3V
3.3V (SPD)
1.05VCCP
1.35V (VDD)
3.3V
5V
0.65V (VTT )
ICH
South
bridge
DDR 3L
3.3V
CARD
READER
3.3V
CLOCK
V IN
3.3V
GFXCORE1.1V
SIO
(KBC)
3.3V
THERMAL
3.3V (SPD)
LCD/
LED
CORE i3,i5,i7
3.3V
FAN
3.3V (SPD)
0.75V (VTT )
RTC
HDD
1.8V
1.5 V
GPU
GFX
CHIP
VCORE
GFXCORE
1.05VCCP
1.5V
Core i3
CPU
5V
DVD
3.3V
1.05V
1.8V
PCH
RTC
1.5V
7
CORE I CPU 1st Generation
CPUCORE
1.5volt
GFXCORE
1.05volt
CORE I CPU 2nd & 3rd Generation
CPUCORE
GFXCORE
1.5volt
1.05volt
CORE I CPU 4th & 5th Generation
CPUCORE
1.35volt
GFXCORE
3.3volt
1.05volt
MOSFET
Drain
N-Channel
Gate
Source
Drain
P-Channel
Gate
Source
1,2
D1
8
G1
D1
1
G1
S1
D2
3
G2
2
S2
4
S1,D2
5
6 G2
7
S1,D2
S2
Pulse Width Modulator
18 volt
Switching AC voltage
18 volt DC
5v DC
Smooth DC voltage
5 volt DC
A
18volt
B
PWM
A
B
5volt
Pulse-width modulation control works by
switching the power supplied on and off
very rapidly. The DC voltage is converted to a
square-wave signal.
Sample pulse width modulator
+ve
enable
Output DC
PWM
Power good
-ve
feedback
Components in power unit
capacitor
coil
Mosfet
Diode
Adopter Input
230volt AC
Batary
Charging
Adapter
Chip manufacturer
v
Battery
18 volt DC
10.8volt DC
Volt in output
VIN
B++
ISL
MAXIM
TI
RICHTEK
Voltage input and battery charging section
CURRENT SENSE RESISTER
2
MOSFET
MOSFET
Ac ok
Dc Power for chip
CSSP
CSSN
AC in
CELLS
ACPRESENT(AC OK)
CHGLED
AC IN
SIO
SMD
V in
power
Bat
drv
SM BUS
SMC
Batt
BATLOW
SMDATA
SMCLOCK
SM BUS
TEMP
PCH
MOSFET
3
MOSFET
4
Battery
10.8vDC
LI-ION CELLS
MOSFET
5
CONTROL CIRCUIT
1
PWM
Adopter
Dc input
18V DC
VIN(DCBATB++)
Output
Voltage input and battery charging section
2
1
MOSFET
5
MOSFET
MOSFET
Ac ok
Dc Power for chip
CSSP
CSSN
MOSFET
3
MOSFET
4
Battery
ACPRESENT(AC OK)
CHGLED
AC IN
SIO
SMD
V in
power
Bat
drv
SM BUS
SMC
Batt
BATLOW
SMDATA
SMCLOCK
SM BUS
TEMP
PCH
10.8vDC
LI-ION CELLS
AC in
CELLS
CONTROL CIRCUIT
Adopter
Dc input
18V DC
VIN(DCBATB++)
Output
2
1
MOSFET
5
MOSFET
MOSFET
Ac ok
Dc Power for chip
Not working on adopter
CSSP
Batt. drv
CSSN
MOSFET
3
MOSFET
4
Battery
ACPRESENT(AC OK)
CHGLED
SIO
V in
power
SMD
Bat
drv
SMC
Batt
BATLOW
SMDATA
SMBUS
SMCLOCK
TEMP
ICH
Battery not detecting
Communication between sio & battery
Battery not charging
10.8vDC
LI-ION CELLS
AC in
CONTROL CIRCUIT
Adopter
Dc input
18V DC
Not powering on
battery
VIN(DCBATB++)
Output
adopter
battery
Some sample chip
Up to C2D CPU
1
3volt VCC
(cpu)
32.7KHZ
BIOS
VR_ON
PWR_ON ( main_on, Run on)
SIO
KBC_PWRBTN
3
6
5
PM_SLP_S4
susc
4
PM_SLP_S3
susb
PM_PWRBTN
RSMRST
2
SUSp_ON
3 VOLT VCC
RSMRST
PWRBTN
ICH
PM_PWRBTN
SLP_S3
SLP_S4
POWER ON BUTTON SEQ.
(B
SLP_S4
SIO
STEP 2 TURN ON
CPU CORE ON
RSMRST
POWER BUTTON
ADOPTAR PRESENT
POWER BUTTON
TO PCH
SUSPEND ON
3volt VCC
32.7KHZ
1
Pin No 8
EC BIOS
VR_ON
KBC_PWRBTN
PWR_ON
(Bridge, Ram supply)
Main on(sys on)
SIO
4
6
SUSP_ON
PM_SLP_S4
susc
5
PM_SLP_S3
susb
3
PM_PWRBTN
RSMRST
2
7
(cpu)
PCH
POWER ON BUTTON SEQ.
Core i3 power sequence
S
W
1
S
W
R304
Y1
C345
R491
R490
R503
EC
SIO
R105
PCH
ITE-8518
SUS_ON
RUN_ON
VR_ON
9
10
12
11
EC_PWROK
HWPG
1
13
3
Step down 1 voltage(always voltage)
V+ vin
18
v
LD05
(VREG5)
LD03(VREG3)
3v Linear
regulator
5v Linear
regulator
18v
MOSFET
3VALW
UG
3volt
MOSFET
BIOS
LG
3 On
SIO
PG signal
Enable
18v
Vcc 5V
vcc
3.3v
Osc
PWM
UG
5v
Osc
PWM
5 on
LG
MOSFET
MOSFET
5VALW
Step down 1 voltage(always voltage)
V+ vin
18
v
LD03(VREG3)
3v Linear
regulator
SIO
5v Linear
regulator
18v
Vcc 5V
susp
3VS
LD05
(VREG5)
MOSFET
MOSFET
UG
3VALW
MOSFET
LG
3 On
PG signal
vcc
3.3v
Osc
PWM
UG
5v
Osc
PWM
5 on
susp
3volt
MOSFET
5VALW
MOSFET
LG
MOSFET
5VS
VIN VOLTAGE
Linear output
Step down 1 voltage(always voltage)
V+ in
LD03
3v Out
5v Out
LD05
Vcc
vcc
5v
Osc
PWM
3 On
3v
Osc
PWM
5 on
PG signal
Enable
Microcontroller
5VALW
3VALW
V+ in
SIO
Step down 2
1.8V & 1.05v voltage
ENABLE
Power Good
1.05v
osc
1.8 VOLT
OR
1.5 VOLT
0R
1.05V0LT
RAM VTT Voltage
1.8V OR 1.5V
VTT Enable
0.9V or 0.75
CPU Core voltage
5Volt
V IN
1v 30Amp
VR_ON
SIO
VRM PWRGD
PWM
CPU
VRM
VCORE
CPU
CPU
V IN
V IN
PWM
CLK ENABLE
VID signal
Core i3 VRM section
1
Vin voltage
5volt
VCC
2
3
From SIO
CPU core
1 v to 1.5v
VR_ON
6
Clock enable
VRM
Core v
To SIO
4
VRM
power good
Core i3
CPU
VID signal from CPU
6
5
GFX Core
GND
32
Power Block Diagram
230v AC
CPU Core
volt
Adopter
Battery
0.8v or 1v VCORE
17
18
1
CHG_ENABLE
SM BUS
Volt In
16
13
11
Enable
SYS_ON
SUSP
4
SLP_S5
3v supply
PG
signal
PWRBTN
6
3VL
3.3VALWS
Step
down
1
VRMPWRGD
5
5VALWS
3
RSMRST
9
PWRBTN
SLP3,SLP4,
10
3 volt
19
EC_PWRGD(PWRGD)
12
5vSUS
MOSFET
PG OK
KBC
3.3vSUS
MOSFET
Enab
sig
14
15
VR_ON
(SIO)
32.7khz crystal
Step down
2
2
On\off
switch
8
0.9v
1.8v
1.05v
7
ICH
SUS_PWRGD
Battery
Power Block Diagram
230v AC
MAIN_PWRGD
GFX_PWRGD
CPU Core
volt
0.8v or 1v VCORE
18
Adopter
1
15
GFX
Volt In
Step down
2
ACIN
CHG_ENABLE
SM BUS
1.8v
15
2
VR_ON
Enable
HWPG
SIO
Enab
32.7khz crystal
KBCsig
14
SUSP
19
10
Step
down
1
VRMPWRGD
SLP_S5
4
7
PG
signal
PWRBTN
3.3VALWS
5
5VALWS
3
3v supply
On\off
switch
RSMRST
8
PM_PWRBTN
SLP3,SLP4,
9
3 volt
20
11
5vSUS
MOSFET
12
SYS_on(Runon)
13
3.3vSUS
MOSFET
17
GFX_ON
16
1.05v
0.9v
ECPWROK(PWR_GD)
6
ICH
battery
Li-ion
3.6V 4500 Times charge/discharge
3.6v
3.6v
3.6v
2Amp
2Amp
3.6v
3.6v
3.6v
10.8volt 4amp
Battery connector
1
2 3456
Pin
Signal
Description
Type
1
GND
Ground
2
Temp
Temperature monitor
I
3
Clock
SM Bus
I/O
4
Data
SM Bus
I/O
5
NC
No Connection
6
BAT_S
Positive voltage
power
In side the battery
clock
SM Bus
Interface
data
Temp sense
Dis-charging
+ve
Battery
Sense &
control
-ve
charging
Battery
connector
Li-ion cell
Laptop Power
ALWAYS ON
SUS_POWER
5V_AUX
ICH
AC
ADOPTER
V IN
3.3V_AUX
ICH
BATTARY
POWER ON
VRON
5V
ICH FAN
USB HDD
DVDW AUDIO
3.3V
ICH BIOS CLOCK
LAN LCD
THERMAL HDD
DDR2
1.8V
3.3V_ALWS
0.9V
MICOM
DDR2 VTT
5V_ALWS
1.05V
ICH MCH
CPU CORE
S4 / S5
S3
S0
POWER RAIL
INPUT SUPPPLY
VIN
BATT 0r ADOPT
B+
Linear output
3VL
pwm always voltage out
5VALW/3VALW
RSMRST from kcb to ich
RSMRST
user press on button
ON/OFF
pwrbtn signal to ich
PWRBTN
ich to SIO
SLP_S5
ich to SIO
SIO to power
SLP_S4
SYSON
1.8V
ich to SIO
SLP_S3
kbc to power
SUSP
5VS/3VS/1.05VS
kbc to power
VR_ON
CPU_CORE
VRM Chip to KBC
VRMPWRGD
KBC TO ICH
CLPWROK) M_PWROK
Clock reset
CL_RST
Clock power good
CL_PWRGD
KBC TO MCH
PM_PWROK
ICH TO CPU
H_PWRGOOD
ich to mch
PLT_RST (PCI_RST)
mch to cpu
RESET
8
ACIN
V In
SIO
SYS_ON (MAIN ON) 13
KBC_RST
6
2
15
4
SLP_S5
BIOS
Step
down
1
5
19
RSMRST
22
M_PWRGD
21
ECPWORK
Clock start
20
17
23
CPU_PWRGD
25
VRMPWRGD
(VGATE)
RSTIN
11
6
PLTRST
3.3V_SUSP
CLK_PWRGD
5v_SUSP
5V_ALWS
1.8v
0.9v
1.05V
To DDR
14
7
RSMRST
PWROK
1.05V
17 CPU_CORE
VRMPWRGD
CL_RST
SLP4/ 5
SLP3
VR_ON
CPU
Core
CL_RST
24
12
3.3v_ALWS
Step
Down
2
MCH
North Bridge
3.3V
www.shriraminfotech.net
CPU
CORE_V
PLTRST
3
SUSON
KBC_3D3_ALWS
RST
CKT
Clock
PM_PWRBTN
7
15
HWPG
PWROK
SLP3
9
16
1
SLP4
10
CPU_PWRGD
ON/OFF
SW
CPU Reset
10.8 Battary
Input
PWRGD
18v adopter
Input
POWER ON AND RESET SEQUENCE
CK_PWRGD
On/off
SW
18
VRMPWRGD
ICH
South Bridge
23
WIFI Card Test Point
CLJ 33MHZ
11
16
SM BUS
30,32
22
PLTRST
CPU RESET
R322
CPU
SIO
R313
R605
ECPWROK
PCH
Battery
ALWS PWRGD
MAIN PWRGD
18
3
Slp _S5
EC BIOS
SUSB, SLP_S3
5V
MOSFET
Step
Down
2
8
7
22
21
20
PCH
6
3.3V
5
MAINON
1.05V(PCH, CPU)
1.5V(DDR3)
1.8V
11
GFX
CORE
PM_PWRBTN
RSMRST
5V
9
10
SUSC, SLP_S4
4
SUS ON
MOSFET
19
ECPWORK
2
3.3VAL
CPU PWRGD
13
DRAM PWRGD
PWRBTN
PLTRST
1
HWPG
SUS PWRGD
ACIN
Step
down
1
CLOCK
14
GFX ON
12 GFXCORE V
VR_ON
CPU
Core
CPUCORE V
15
VR_PWRGD
ADOPTER
BIOS
CS
16
CK_PWRGD
17
CLOCK
CHIP
23
ADOPTER Battery
ALWS PWRGD
MAIN PWRGD
CLOCK
HWPG
SUS PWRGD
ACIN
5V
Step
Down
2
PM_PWRBTN
3.3V
5
8
7
CPU PWRGD
22
21 20
PCH
6
MAINON
1.05V(PCH, CPU)
10
GFX
CORE
SUSC, SLP_S4
RSMRST
MOSFET
9
SUSB, SLP_S3
4
SUS ON
MOSFET
19
ECPWORK
2
3.3VAL
PLTRST
1
3
SLP _S5
1.5V(DDR3)
11
12
CPU
Core
GFX ON
14
GFXCORE V
VR_ON
CPUCORE V
16
VR_PWRGD
Step
down
1
13
DRAM PWRGD
PWRBTN
15
CK_PWRGD
17
47
from
COMPAL 4TH GEN. CPU POWER ON SEQ.
ACIN
+3VLP
EC_ON
3VALW
5VALW
SPOK
1VALW
1.8VALW
ON\OFF BTN
SIO
RSMRST
PBTN_OUT
Adopter present
3volt linear
SIO turn on
3.3volt
5volt
Always voltage power good to SIO
1volt
1.8volt
POWER BTN
Resume & Reset siganl
Power button out from SIO to PCH
CPU
SLP_S4
Power on s4 state from PCH to SIO
CPU
SLP_S3
Power on s4 state from PCH to SIO
SYSON
1.35V
System on signal from SIO
1.35 volt
DDR_PWROK
VR_ON
Core volt turn on
+SOC_VCC
+SOC_VNN
VGATE
SUSP#
Suspend voltage enable
+1.0VS
+1.05VS
+1.35VS
+1.5VS
+1.8VS
+3VS
+5VS
KBRST#
PMC_CORE_PWROK
DDR_CORE_PWROK
PLTRST#
DDR POWER OK
Platform Reset
14.3MHZ CRYSTAL
Volt IN
Charging
Temp
sensor
CPU SENSE
CPU
230v AC
Clock
1v
CPU_Reset
CPU CORE
V
5 VOLT
STEP
DOWN VOLT
Analog
RGB o/p
3.3 VOLT
MCH
3.3V
1.05v
Step down 2
1.8v
32.7khz crystal
reset
3.3v Cmos
Bat
PLT_Reset
Reset m/b
ICH
PG Signal
CPU
FAN
AMP
camera
BIOS
Network
USB