1 Notebook Power System Introduction & Troubleshooting Notebook Power System Introduction & Troubleshooting PE Mike Lee 03/29/2004
1 Notebook Power System Introduction & Troubleshooting
Notebook Power System
Introduction & Troubleshooting
PE
Mike Lee
03/29/2004
2 Notebook Power System Introduction & Troubleshooting
Target audience
• All electrical engineers such as:
• PE, TE, FAE, CSD
Pre-requisite
• Electronic circuits
• Digital logic circuits
• Multi-meter used
Course content
• Power system & Sequence
• Troubleshooting(疑難排解)
• Would not introduce • Power transfer principle ( PWM-Plus
width Modulation & LDO –Low Drop-Out regulator )
• Charger
After this course, you will
• Know how to debug no power problems
Who should attend this e-Learning
3 Notebook Power System Introduction & Troubleshooting
1.1 NB power system introduction
1.2 Power sequence and control
2.1 Power budget(預算) block diagram
2.2 NB power application
2.3 Multi–power device
3.1 No power debug notice & sequence
3.2 DCBATOUT short(短路) to GND
3.2 S5 Power No Good
3.3 Power on logic No Good
Outline(大綱) :
1. Power system architecture :
3. No power debug :
2. Power plan introduction :
Outline
4 Notebook Power System Introduction & Troubleshooting
As we know, notebook power is provided by adaptors
(19V) or batteries (14.8V ). However, the various(不同的)
power voltages do not fit(適合) all devices in a notebook unit.
So a series of voltage transfer actions are needed to provide
power to all devices. (Problems may arise(發生) during the
voltage transfer.)
As notebook is a portable computer, saving power is also
very important when the system is in battery mode.
In this lesson, we will use the Yuhina power circuit to
introduce the notebook power system.
• Foreword :
Foreword
5 Notebook Power System Introduction & Troubleshooting
1.1 NB (Yuhina) power system : AUX Power
PWM
Charger
P-MOS
SI4425
P-MOS
SI4425
PWM
MAX1999
PWM
MAX1715
AD+
BT+
N-MOS
FD9412 N-MOS
FD9412
N-MOS
FD9412
N-MOS
FD9412
5V_S5
Max1999_LDO5
5V_AUX_S5
+5V_UP_S5
3D3V_S5
DCBATOUT
N-MOS
FD9412
LDO
G913C
5V_S3
3D3V_S3
5V_S0
3D3V_S0
3D3V_LAN_S5
1D5V_S5
2D5V_S3 2D5V_S0
LDO
G913C
1D25V_S0
S5 Power S3 Power S0 Power
PWM
MAX1546
VCC_CORE_S0
1D5V_S0
1
4
3
2
1
6
6
5
7
6
4
7
7
5
1.Power system architecture 1 of 4
6 Notebook Power System Introduction & Troubleshooting
1.1 NB (Yuhina) power system : S5 Power
PWM
MAX1645 Charger
P-MOS
SI4425
P-MOS
SI4425
PWM
MAX1999
PWM
MAX1715
AD+
BT+
N-MOS
FD9412 N-MOS
FD9412
N-MOS
FD9412
N-MOS
FD9412
5V_S5
Max1999_LDO5
5V_AUX_S5
+5V_UP_S5
3D3V_S5
DCBATOUT
N-MOS
FD9412
LDO
G913C
5V_S3
3D3V_S3
5V_S0
3D3V_S0
3D3V_LAN_S5
1D5V_S5
2D5V_S3 2D5V_S0
LDO
G913C
1D25V_S0
S5 Power S3 Power S0 Power
PWM
MAX1546
VCC_CORE_S0
1D5V_S0
1
4
3
2
1
6
6
5
7
6
4
7
7
5
1.Power system architecture 2 of 4
7 Notebook Power System Introduction & Troubleshooting
1.1 NB (Yuhina) power system : S3 Power
PWM
MAX1645 Charger
P-MOS
SI4425
P-MOS
SI4425
PWM
MAX1999
PWM
MAX1715
AD+
N-MOS
FD9412 N-MOS
FD9412
N-MOS
FD9412
N-MOS
FD9412
5V_S5
Max1999_LDO5
5V_AUX_S5
+5V_UP_S5
3D3V_S5
DCBATOUT
N-MOS
FD9412
LDO
G913C
5V_S3
3D3V_S3
5V_S0
3D3V_S0
3D3V_LAN_S5
1D5V_S5
2D5V_S3 2D5V_S0
LDO
G913C
1D25V_S0
S5 Power S3 Power S0 Power
PWM
MAX1546
1D5V_S0
1
4
3
2
1
6
6
5
7
6
4
7
7
5
BT+
1.Power system architecture 3 of 4
8 Notebook Power System Introduction & Troubleshooting
PWM
MAX1645 Charger
P-MOS
SI4425
P-MOS
SI4425
PWM
MAX1999
PWM
MAX1715
AD+
N-MOS
FD9412 N-MOS
FD9412
N-MOS
FD9412
N-MOS
FD9412
5V_S5
Max1999_LDO5
5V_AUX_S5
+5V_UP_S5
3D3V_S5
DCBATOUT
N-MOS
FD9412
LDO
G913C
5V_S3
3D3V_S3
5V_S0
3D3V_S0
3D3V_LAN_S5
1D5V_S5
2D5V_S3 2D5V_S0
LDO
G913C
1D25V_S0
S5 Power S3 Power S0 Power
PWM
MAX1546
1D5V_S0
1
4
3
2
1
6
6
5
7
6
4
7
7
5
BT+
1.1 NB (Yuhina) power system : S0 Power
1.Power system architecture 4 of 4
9 Notebook Power System Introduction & Troubleshooting
Why do we need to differentiate power type among(在...之中) AUX,S5,
S3,S0 ?How do we control them ?
Here is the answer:
• AUX Power : For power button use , it is turned on with battery only
before you press the power button .
• S5 Power : For power button & wake on LAN use , it is turned on
with adapter before you press the power button .
• S3 Power : For stand_by mode use , it is turned on with South bridge
PM_SLP_S3# after you press the power button .
• S0 Power : For normal mode use , it is turned on with South bridge -
PM_SLP_S4# after you press the power button .
1.2 Power sequence and control:
10 Notebook Power System Introduction & Troubleshooting
AUX
Power
S5
Power
S3
Power
S0
Power
BAT only AD+
or
AUX_S5 3D3V_S5
1D5V_S5
DCBATOUT
AC_IN PM_SLP_S4# PM_SLP_S3#
5V_S3
3D3V_S3
2D5V_S3
5V_S0
3D3V_S0
2D5V_S0
1D25V_S0
Vco_S0
For power button use For stand_by
mode use
For normal mode use For power button &
wake on LAN use
Block Diagram :
11 Notebook Power System Introduction & Troubleshooting
U31
MAX1999EEI
1
2
34
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
2122
23
24
25
26
27
28
NC
PGOOD
ON3ON5
ILIM3
SHDN#
FB3
REF
FB5
PRO#
ILIM5
SKIP#
TON
BST5
LX5
DH5
VC
C
LD
O5
DL5
V+
OUT5OUT3
GND
DL3
LD
O3
DH3
LX3
BST3
MAX1999_LDO5 = 5V_S5
30mA MAX.
MAX1999_LDO3
DCBATOUT
a. When the battery or adaptor is
plugged-in(插入), DCBATOUT will
input the power into MAX1999 pin
20_V+ , and pin 18 – LDO5 will
provide the 5V_AUX_S5 power .
c. The 5V_AUX_S5 is never off when
MAX1999 is working, unless
something goes wrong with
MAX1999 .
b. The AUX power is used on
power on logic & South Bridge.
As it is battery only, the leakage
current must be as little as possible.
In general, it is about 5~6 mA.
1.2.1 AUX_Power :
12 Notebook Power System Introduction & Troubleshooting
The AC_IN signal was pulled hi when Adaptor was inserted .
Power on logic will output MAX1999_SD hi to trigger 3D3V_S5.
As a result, when Adaptor is inserted but power button has yet been
pressed,the S5_power will be turned on first .
M1631_EN
GS
D
Q51
2N70021
23
5V_AUX_S5
100KR3
12
U36CTSAHCT32
9
108
14
7
5V_AUX_S5
R471100KR3
12
5V_AUX_S5
5V_S5
AC_IN
BL3#
R267
10KR3
12
MAX1999_SD_3
R481
10KR3
1 2R314100KR3
12
5V_AUX_S5
U51
NC7SZ08-U
1
2
34
5A
B
GNDY
VCC
U50CTSAHCT14
56
14
7
PWRBTN_74
Hi Hi
Hi
Hi
Low
a. Circuit operation – Power on logic :
1
1
2
2
1.2.2 S5_Power:
13 Notebook Power System Introduction & Troubleshooting
MAX1999_LX3_1
MAX1999_LX3
C627SC47P50V2JN
12
R608
220KR3
12
PM_SLP_S4#14,15,36,37
MAX1999_SHDN#
R300DUMMY-10KR3
1 2
3D3V_DC_S5
MAX1999_VCC
MAX1999_LDO3
3D3V 3.8A/6.9A
R304 0R3-U1 2
MAX1999_DL3
MAX1999_ON5
U31
MAX1999EEI
1
2
34
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
2122
23
24
25
26
27
28
NC
PGOOD
ON3ON5
ILIM3
SHDN#
FB3
REF
FB5
PRO#
ILIM5
SKIP#
TON
BST5
LX5
DH5
VC
C
LD
O5
DL5
V+
OUT5OUT3
GND
DL3
LD
O3
DH3
LX3
BST3
MAX1999_SD_3
C6
22
SC
D1
U2
5V
3K
X
12
MAX1999_FB3
R5902MR3
12
C1
98
SC
4D
7U
25
V6
KX
12
L21IND-4D7UH-16
68.4R71B.1011 2
C236
SCD22U10V3KX
C194
SCD1U25V3KX
12
MAX1999_TON
R5751KR3
12
C6
36
SC
10
0P
50
V2
JN1
2
MAX1999_DH3
MAX1999_BST 3_1
DCBATOUT
MAX1999_REF
R6
04
10
KR
3F
12
Q22SI4834DY
1
82
7 6 5
4 3
R5
98
6K
65
R3
F
12
TC
30
ST
10
0U
4V
BM
12
When MAX1999 – Pin 3(ON3) pull hi, the 3D3V_S5 will be turn on.
b. Circuit operation – 3D3V_S5 :
14 Notebook Power System Introduction & Troubleshooting
When AC_IN is HI,
The MOS-U13 will be turned on, and 3D3V_LAN_S5 will be generated.
This power is for wake on LAN function.
The 1D5V_S5 LDO power will be turned on by 3D3V_S5 .
This power is for south bridge for wake on LAN usage .
Because adaptor power was inserted already, the Battery leakage current is not
a concern now。
C593
C172SC20P
R54012K4R3D
12
R54660K4R3F
12
3D3V_S5
I max = 120 mA
1D5V_S5
C176
U24
G913C-U
123 4
5SHDN#GNDIN OUT
SET
DCBATOUT
SSSGD D D D U13
FDS9412
12345 6 7 8
3D3V_LAN_S5
R105
10KR3
1 2
LAN Power
GS
D
Q10
2N7002
1
23
U14
NC7SZ32-U
1234
5AB
GNDY
VCC
3D3V_S5
BC27
PM_SLP_S3#
R101 1KR3
1 2
3D3V_S5
R107
330KR3
1 2R95330KR3
12
D3
RLZ12B
12
AC_IN
Q11TP0610T
12
3
1D5V_S5 LDO
Hi
Hi
Hi
Low
1 2
1
2
3
3
c. Circuit operation – LAN & 1D5V_S5 power :
15 Notebook Power System Introduction & Troubleshooting
When the power button was pressed, south bridge will pull hi the
PM_SLP_S4#, and 5V_S3 power will be generated .
MAX1999_VCC
R263
0R3-U
12 C
62
6
SC
D1U
16V
3K
X
12
MAX1999_ILIM3
MAX1999_ILIM5
R280
0R3-U
1 2
MAX1999_PGD
R2862MR3
12
R5810R3-U
12
MAX1999_BST 3_1
R266100KR3
1 2
C21
1S
C4D
7U
25V
6K
X
12
C64
11
2
MAX1999_LX5_1
TC
33
12
MAX1999_LDO5
MAX1999_ILIM5_3
C251SC47P50V2JN
12
BC46 12
SSSGD D D D U29
SI4800
12345 6 7 8
MAX1999_SD_3
R61
09K
76R
3F
12
MAX1999_DL5
R26
024K
R3 1
2
SBR
27
718K
R3F1
2
L24IND-5D6UH-6-U
1 2
U31
MAX1999EEI
1
2
34
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
2122
23
24
25
26
27
28
NC
PGOOD
ON3ON5
ILIM3
SHDN#
FB3
REF
FB5
PRO#
ILIM5
SKIP#
TON
BST5
LX5
DH5
VC
C
LD
O5
DL5
V+
OUT5OUT3
GND
DL3
LD
O3
DH3
LX3
BST3
R580
10KR3
12
R60
7
15K
R3F
12
DCBAT OUT
C240
12
U33
SI4892DY1234
8765
SSSG
DDDD
PM_SLP_S4#
MAX1999_BST 5_1
MAX1999_DH5
MAX1999_FB5
5V_S3
MAX1999_ON5
MAX1999_LX5
MAX1999_FB5
1.2.3 S3_Power:
a. Circuit operation – 5V_S3 :
1.2.3 S3_Power:
16 Notebook Power System Introduction & Troubleshooting
3D3V_S3 power is generated by U25 N-MOS from 3D3V_S5 when
PM_SLP_S4# is hi .
C281SCD1U50V5KX
GS
DQ532N7002
1
23
Q32TP0610T
12
3
3D3V_S5
R3151KR3
12
3D3V_S3
S
S
S
G D
D
D
D
U25
FDS9412
1234 5
678
R305
10KR3
1 2
DCBATOUT
R302330KR3
12
PM_SLP_S4#
D19
RLZ12B
12
R311
330KR3
1 2
Hi Hi
Low
b. Circuit operation – 3D3V_S3 :
17 Notebook Power System Introduction & Troubleshooting
When 5V_S3 power was building, MAX1715 pin – 11 is pulled hi, and
2D5V_S3 will be turned on .
M1715BST2
R591 0R3-0-U
1 2
D45
SSM24L
21
C20812
R582 0R3-0-U1 2
PM_SLP_S3#
2D5V_S3
M1715LX2
R249 10R31 2
SSSGD D D D U65
SI4800
12345 6 7 8
R577 0R3-0-U1 2
R555 0R3-0-U1 2
C207
SCD1U25V3KX
12
M1715DL2
U61
MAX1715EEI-U2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
OUT1
FB1
ILIM1
V+
TON
SKIP#
PGOOD
AGND
REF
ON
1O
N2
ILIM2
FB2
OUT2
N.C
.
LX1
DH1
BST1
DL1
N.C
.
PGND
VC
CV
DD
DL2
BST2
DH2
LX2
N.C
.
TC
32
ST2
20U
4V
DM
-61
2
C191
12
C213
D10
BAW56-1
1 23
R593
12
L25IND-5D6UH-6-U
1 2
5V_S3
M1715DH2
M1715ILIM2
M1715FB2
DCBATOUT
R5920R3-0-U
12
U69
SI4892DY
1234
8765
SSSG
DDDD
2D5D_S3_ON
c. Circuit operation – 2D5V_S3 :
18 Notebook Power System Introduction & Troubleshooting
The stand-by mode function is for power saving when the system is not
operated just as the below setting. So, the S3 power is for this usage.
• The system will enter the stand-by mode
if NB remains not operated during 30 mins.
• During stand-by mode if power button is
pushed, the system will return to previous
state in 5 sec .
• Because the state is resumed from
memory, we need S3 power to keep North
Bridge & DDR working while standing by.
At this state, the battery leakage current is
under 30 mA.
Why Notebook needs S3 power – Stand-by mode function ?
d. S3 power Purpose :
19 Notebook Power System Introduction & Troubleshooting
After PM_SLP_S4# signal was generated for a few sec , the
South Bridge will output PM_SLP_S3# on hi level, and 1D5V_S0 will
be turned on .
M1715LX1
U61
MAX1715EEI-U2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
OUT1
FB1
ILIM1
V+
TON
SKIP#
PGOOD
AGND
REF
ON
1O
N2
ILIM2
FB2
OUT2
N.C
.
LX1
DH1
BST1
DL1
N.C
.
PGND
VC
CV
DD
DL2
BST2
DH2
LX2
N.C
.
R577 0R3-0-U1 2
M1715DH1R553 0R3-0-U1 2
M1715ILIM1
D11
SSM24L
21
M1715DH1_1
M1715DL1
R249 10R31 2
R5565K1R3F
12
PM_SLP_S3#
C189
12
M1715FB1
C610SC1U10V3ZY
L23
IND-4D7UH-16
1 2
TC31
ST 100U4VBM
12
DCBATOUT
R558
300KR312
R554 0R3-0-U1 2
U62SI4834DY
1
82
7 6 5
4 3
C188SCD1U25V3KX
12
R54910KR3F
12
C2101
2
M1715DL1_1
R582 0R3-0-U1 2
1D5V_S0
a. Circuit operation – 1D5V_S0 :
1.2.3 S0_Power:
20 Notebook Power System Introduction & Troubleshooting
PM_SLP_S3# signal is also used to turn on 5V、3D3V、2D5V_S0.
S
S
S
G D
D
D
D
U35
FDS9412
1234 5
678
5V_S0
R307
330KR3
1 2
2D5V_S0
C645SCD1U50V5KX
2D5V_S3
PM_SLP_S3#
R308
10KR3
1 2
C283
12
GS
DQ332N7002
1
23
DCBAT OUT
3D3V_S0S
S
S
G D
D
D
D
U26
FDS9412
1234 5
678
S
S
S
G D
D
D
D
U321234 5
678
D16
RLZ12B
12
3D3V_S5
5V_S3
R3061KR3
12
R609330KR3
12
C235
12
Run PowerQ28 TP0610T
12
3
b. Circuit operation – 5V,3D3V,&2D5V_S0 :
21 Notebook Power System Introduction & Troubleshooting
-- P4 CPU_ VCO power – architecture :
PWM
MAX1546
CPU
LDO
CM2843
Phase 1
Power module
Phase 2
Power module
Phase 3
Power module
3D3V_S0
1D2V_VID
H_VID0~5
DCBATOUT
DCBATOUT
DCBATOUT
VCC_CORE_S0 PWRGD_VID
1
5 4
3
2
1546
DHM & DLM
6
p.s. As one phase of power module can
only supply 25A, and Yuhina CPU needs
66A, therefore 3 phrases are required.
1 of 4 c. Circuit operation – P4 CPU VCC_CORE_S0 :
22 Notebook Power System Introduction & Troubleshooting
3D3V_S0 power on .
CM2843 provides 1D2V_VID to CPU.
CPU provides VID code
PWRGD_VID, which is provided by CM2843, will delay 1ms
while 1D2V_VID is on. So it will be turned on after the CPU VID code.
R19
0R3-0-U
1 2
R334
100KR3
1 2
BCB1SCD1U
PWRGD_VID
FOR NORTHWOOD ONLY3D3V_S0
C21SCD015U25V3KX
12
FS_X
U1
CM2843ACIM25
123 4
5VINGNDEN PG
OUT
BC91
2
1D2V_VID
MIC5258_EN
300mA SUPPORT
1mS Minimum Request (1D2V_VID TO PWRGD_VID)
RB247KR3
12
BC16SC1U10V3ZY
RB1330KR3
12
1
1
2
4
2
4
3
3 CPU
H_VID0~6
2 of 4 c. Circuit operation – P4 CPU VCC_CORE_S0 :
23 Notebook Power System Introduction & Troubleshooting
1546DHS 32
3D3V_S0
R18710R3
12
5V_S0 PM_DPRSLPVR#
RN9SRN10K-2
1 2 3 45678
R631
0R3-U
12
PWRGD_VID
BC
84S
C1U
10V
3KX
12
H_VID15
R14710KR2
12
DCBATOUT_VCPU
H_VID25
1546CS- 32
R148Dummy-10KR2
12
1546CS+ 32C12
7S
C1U
10V
3ZY
H_VID05
1546CM- 32
C51
9S
C47
0P5
0V3J
N
H_VID35H_VID45
H_VID54
C13
7S
C1U
25V
-U1
2
1546CM+ 32
U21MAX1546ETL
123
4 5
6
78
9
10
11
12
13
14
1516
2019
18
1730
2928
272625
24232221
40 3938 3736
35
34
33
32
31 41
TIMETONMUXSEL
S0
S1
SH
DN
#
OFSREF
ILIM
VC
C
GN
D
CCV
GN
DS
CCI
FBOA
IN-
D4D5
SK
IP#
OA
IN+
VD
D
DLMDHM
LXMBSTMVROK
D0D1D2D3
CS
PC
SN
CM
NC
MPV+
BS
TS
LXS
DH
S
DLS
PG
ND
GN
D
4
5
3
5
1 1
2
1 MAX1546 Power is ready .
CM1843 generates 1D2V_VID to CPU.
CPU provides the VID0~5 to the MAX1546 ..
CM1843 will send PWRGD_VID as Hi after 1ms that 1D2V_VID was generated.
MAX1546 will output the switching signal .
4
5
CM1843
CPU
4
PWRGD_VID
2 1D2V_VID
3
3 of 4 c. Circuit operation – P4 CPU VCC_CORE_S0 :
24 Notebook Power System Introduction & Troubleshooting
1546DHM
G
S
D
Q12
SU
D50
N03
-06
P
1
32
C11
8S
CD
1U50
V3
KX
12
C480
DUMMY-C31 2
G
S
D
Q44
SU
D50
N03
-11
1
32
C12
4S
C47
00P
50V
2K
X
12
1546DHM
R117D001R7520F
1 2
G4
GAP-CLOSE-PWR
12
C95
SC
D01
U50
V3
KX
VCC_CORE
1546DLM
G
S
D
Q45
SU
D50
N03
-11
1
32
C485
SC10U35V0ZY-U1 2
1546CM+
DCBATOUT_VCPU
1546LXM 1546LXM
1546B
ST
M
C490
DUMMY-SC10U35V0ZY-U1 2
DCBATOUT_VCPU
L13L-D5UH
1 2
C511
SC10U35V0ZY-U1 2
1546DLM
1546CM-
1546BST M
D28
DU
MM
Y-S
CM
54-
U
21
G
S
D
Q13
SU
D50
N03
-06
P
1
32
The step-down circuit starts working as soon as the switch signal begins.
The VCC_CORE is produced and will provide the CPU’s working power .
PS. This is one of the three phases in VCC_CORE.
5
6
5
6
4 of 4 c. Circuit operation – P4 CPU VCC_CORE_S0 :
25 Notebook Power System Introduction & Troubleshooting
PWM
MAX1546
ISL6218
CPU
LDO
CM2843
Phase 1
Power module
Phase 2
Power module
Phase 3
Power module
3D3V_S0
1D2V_VID
H_VID0~5
DCBATOUT
DCBATOUT
DCBATOUT
VCC_CORE_S0 PWRGD_VID
1
5 4
3
2
1546
DHM & DLM
6 1D2V_S0
VCC_IO_S0(1.05V)
CPUCORE_ON
Banias CPU needs 21A, so only one phase is needed.
The power system can separate two kinds of architecture for CPU.
But the only difference between P4 and Banias CPU power
architecture is VCC_COER_S0. Such as below :
d. P4 & Banias CPU VCC_CORE_S0 difference :
26 Notebook Power System Introduction & Troubleshooting
By now we have learned how NB power is generated and
why it must be done in a specific sequence. You might start
to wonder, “What is other Power application?” In the
following section, I will show you the power consumption of
all devices in a NB. You will learn:
2.1 Power budget block diagram
2.2 NB power application 2.3 Multi–power device
2. Power plan introduction :
27 Notebook Power System Introduction & Troubleshooting
Create a NB power system with fixed procedure, so
we can know the power budget of all devices from the
power plan procedure .
Design procedure :
a. Power budget :
b. Power application :
We must first know the power category and
consumption of all devices, and then we can start to
define the SPEC of power.
After power SPEC was defined, we need to confirm the
timing & sequence when power is turned on. And
separate them with S5,S3,S0, etc. for the purpose
of power saving.
2. Power plan introduction :(cont’d)
28 Notebook Power System Introduction & Troubleshooting
1D25V_S0
VCC_CORE_S0(2.5mA )
1D5V_S0(599mA)
3D3V_S0(480mA )
1D5V_S5(90mA )
3D3V_S5( 166mA)
ICH4M
VCC_CORE
1D5V_S0(3140mA )
3D3V_S0(20mA )
2D5V_S3(2000mA )
2D5V_S0(50mA)
VCC_CORE(940mA )
Montara-GT
Mobile P4 CPU
3D3V_S3
VCC_CORE
(67.4A)-3.2G Hz
1D2V_VID(190mA)
CLK GEN
ICS950813
360mA
CARDBUS&
1394 3D3V_S0(60mA)
CODEC
40mA
LPC SIO
50mA
LPCROM
6mA
DDR
2D5V_S3 (2150mA)
1D25V_S0 (2150mA)
KBC
7mA
~150mA
~2150mA
~190mA
PCMCIA
CARD
1000mA
2D5V_S3 ~4150mA
~65400mA
Mini PCI
802.11/BT
660mA
1D25V_S0
VCC_CORE
1D2V_VID
3D3V_S3
3D3V_S5
2D5V_S3
3D3V_S5
~50mA
~7650mA
~166mA
3D3V_S0
5V_S0
CRT
0.5A
HDD
900mA
CD ROM
700mA
OP AMP
1A
TOUCHPAD
25mA
PCMCIA
CARD
1A
1394-PHY
71mA
2D5V_S0
FIR
600mA
LCD
200mA
~2984mA
1D2V_VID
1D5V_S0 ~3739mA
FAN
0.5A
MS Card
200 mA
SD Card
200 mA USB*4
2000mA
1D5V_S0
2D5V_S0
KBC
3D3V_S3(150mA) LAN
3D3V_LAN_S5(150mA)
1D5V_S5 1D5V_S5 ~90mA
3D3V_LAN_S5
FDD
0.8A
2.1 NB (Yuhina) Power Budget Block Diagram
29 Notebook Power System Introduction & Troubleshooting
S5 ICH4M
S3
Montara-GT ICH4M LPC SIO
Mini PCI CODEC LPC ROM
1394-PHY KBC CLK GEN
PCMCIA card LCD CARBUS
MS/SD card FIR
S0
KBC
LAN
2.2.1 3D3V Device :
2.2 NB power application :
30 Notebook Power System Introduction & Troubleshooting
S5
S3
Mini PCI FDD CD ROM
CODEC HDD USB*4
Touch PAD CRT OP AMP
PCMCIA card FAN
S0
2.2.3 2D5V Device :
S5
S3 DDR
S0
Montara - GT
Montara - GT
2.2.2 5V Device :
31 Notebook Power System Introduction & Troubleshooting
2.2.6 1D2V_VID Device :
2.2.5 1D25V Device :
S0 DDR
S0 CPU
S0 CPU ICH4M Montara-GT
2.2.7 VCC_CORE Device :
S5
S3
S0 ICH4M Montara_GT
ICH4M
2.2.4 1D5V Device :
32 Notebook Power System Introduction & Troubleshooting
Device
ICH4M
(South Bridge)3D3V_S5 3D3V_S0 1D5V_S5 1D5V_S0 VCC_CORE
Montara _ GT
(North Bridge)3D3V_S0 2D5V_S3 2D5V_S0 1D5V_S0 VCC_CORE
Mobile P4 CPU 1D2V_VID VCC_CORE
DDR 2D5V_S3 1D25V_S0
Power source
2.3 Multi-power device :
33 Notebook Power System Introduction & Troubleshooting
No power means when the power button is pressed, the power
LED is not turned on, and the system is not booted. We can
separate no power in four kinds of states :
3.1 No power debug notice & sequence
3.2 No DCBATOUT or short to GND
3.3 S5 Power No Good
3.4 Power on logic No Good
No power define :
If power system is good & power LED turned on, but the system
still N.G., it means the system is “No work”.
You must follow the “No work debugging” process to troubleshoot
the problems.
3. No power troubleshooting
34 Notebook Power System Introduction & Troubleshooting
3.1.1 debug Notice :
• For safety’s sake, please use adapter to supply the
Notebook power when you execute the debug process .
• This debug procedure can only cover about 90% no power
Problems.
3.1.2 debug Sequence :
Check
Dcbatout short to GND
Symptom?
Ref : 3.2.1
Check
S5 power N.G
Symptom? Ref : 3.3.1
Check
Power logic N.G
Symptom? Ref.:3.4.1
Execute
DCbatout short to GND
Debugging
Ref : 3.2.2
Execute
S5 power N.G
Debugging
Ref : 3.3.2
Execute
Power logic N.G
Debugging
Ref : 3.4.2
Other
condition
No No No
Yes Yes Yes
3.1 No power debug notice & sequence :
35 Notebook Power System Introduction & Troubleshooting
3.2.1 Symptoms:
• There is no any response when the power button was pressed and
adaptor was already inserted .
• Adaptor power LED flashes or shuts down .
Solution: Open the system case and use the multi-meter 200V scale to
check AD+ or DCBATOUT between GND as below . If the voltage is
less than 5V,we can make sure it is short to GND .
DCBATOUT
Adaptor in to generate DCBATOUT
Rating 5.5A
AD+
AD_JK
AD+_2
1645_PDS
D23 HZM24NBZ
23
C28
L21 2
GS
DQ372N7002
1
23
R25100KR3
12
R344100KR3
12
DCIN1
1
2
3
4L3
1 2
SSG D
DDDS
U3
SI4425DY
1234 5
678
R3056KR3
12
C334C335
C
B
E
Q3
3
1
2
D36
DUMMY-SSM34
2 1
R259D02R7520F
1 2
SSGD
DDD S
U57SI4425DY
12345
678
AD_OFF25
19V
3.2 DCBATOUT short to GND :
36 Notebook Power System Introduction & Troubleshooting
• There are 6 kinds of power sources in the Yuhina system, so we must check all
of the power output to see if there is any short to GND.
Solution: Check the 5V_S3,3D3V_S5,2D5V_S3,1D5V_S0,VCC_CORE and
charger power one by one .
PWM
MAX1645 Charger
P-MOS
SI4425
P-MOS
SI4425
PWM
MAX1999
PWM
MAX1715
N-MOS
FD9412 N-MOS
FD9412
N-MOS
FD9412
N-MOS
FD9412
3D3V_S5
N-MOS
FD9412
LDO
G913C
5V_S3
3D3V_S3 3D3V_S0
3D3V_LAN_S5
1D5V_S5
2D5V_S3 2D5V_S0
LDO
G913C
1D25V_S0
PWM
MAX1546
1D5V_S0
BT+
DCBATOUT
VCC_CORE_S0
5V_S0
1 of 2 3.2.2 Debugging :
37 Notebook Power System Introduction & Troubleshooting
Following is an example of the 2D5V power source.
Use multi-meter 200 scale to check TC32. The impedance must bigger
than 200. If not, it means something short to GND, and we need to find out why.
Usually we would remove hi & low side MOS (U65 & U69) and MAX1715. If it’s still
short to GND, it means some output devices are damaged, and we must try to
remove them one by one .
M1715BST2
R591 0R3-0-U
1 2
D45
SSM24L
21
C20812
R582 0R3-0-U1 2
PM_SLP_S3#
2D5V_S3
M1715LX2
R249 10R31 2
SSSGD D D D U65
SI4800
12345 6 7 8
R577 0R3-0-U1 2
R555 0R3-0-U1 2
C207
SCD1U25V3KX
12
M1715DL2
U61
MAX1715EEI-U2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
OUT1
FB1
ILIM1
V+
TON
SKIP#
PGOOD
AGND
REF
ON
1O
N2
ILIM2
FB2
OUT2
N.C
.
LX1
DH1
BST1
DL1
N.C
.
PGND
VC
CV
DD
DL2
BST2
DH2
LX2
N.C
.
TC
32
ST2
20U
4V
DM
-61
2
C191
12
C213
D10
BAW56-1
1 23
R593
12
L25IND-5D6UH-6-U
1 2
5V_S3
M1715DH2
M1715ILIM2
M1715FB2
DCBATOUT
R5920R3-0-U
12
U69
SI4892DY
1234
8765
SSSG
DDDDDVM
1
2
2 1
2 of 2 3.2.2 Debugging : (cont’d)
38 Notebook Power System Introduction & Troubleshooting
3.3.1 Symptoms:
U31
MAX1999EEI
1
2
34
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
2122
23
24
25
26
27
28
NC
PGOOD
ON3ON5
ILIM3
SHDN#
FB3
REF
FB5
PRO#
ILIM5
SKIP#
TON
BST5
LX5
DH5
VC
C
LD
O5
DL5
V+
OUT5OUT3
GND
DL3
LD
O3
DH3
LX3
BST3
MAX1999_LDO5 = 5V_S5
30mA MAX.
MAX1999_LDO3
• There is no any response when the power button
was pressed and adaptor has already plugged-in.
•Adaptor power LED is normal .
3.3.2 Debugging :
• Open the case, use multi-meter to check if MAX1999
pin18 5V_S5 power is good.
• If not, it means MAX1999 or some 5V_S5 devices are
damaged. Remove all powers, use multi-meter to check
MAX1999 pin18 Impedance .
• If the impedance is smaller than 200, it means some
5V_S5 devices are damaged, and we must try to
remove the component one by one.
• If the impedance is more than 200, it means the
MAX1999 have some problem, and it must be changed.
3.3 S5 Power No Good :
39 Notebook Power System Introduction & Troubleshooting
• Next we must check 3D3V_S5. If 3D3V_DC_S5 is N.G, we could use multi-
meter to check MAX1999 pin20 (19V), pin17, 28, 3 (5V) if powers are all
good. If N.G, please check the source component.
MAX1999_REF
DCBATOUT
3D3V_DC_S5
MAX1999_LDO5 MAX1999_VCC
MAX1999_LDO5
3D3V_S5_ON
MAX1999_BST3
MAX1999_SHDN#
C642
C209
12
R602
10R3
1 2
C236
SCD22U10V3KX
R608
220KR3
12
R5902MR3
12
R263
0R3-U
12
C647
12
R598
6K
65R
3F
12
R604
10K
R3F
12
TC
30
ST
100
U4V
BM
12
C622
SC
D1U
25V
3KX
12
Q22SI4834DY
1
82
7 6 5
4 3
C198
SC
4D
7U25V
6K
X12
C636
SC
100
P50
V2J
N
12
C194
SCD1U25V3KX
12
C627SC47P50V2JN
12
D411 23
R294
4D7R5
1 2
U31
MAX1999EEI
NC1
PGOOD2
ON33
ON54
ILIM35
SHDN#6
FB37
REF8
FB59
PRO#10
ILIM511
SKIP#12
TON13
BST514
LX515
DH516
VC
C17
LD
O5
18
DL519
V+
20
OUT521
OUT322
GND23
DL324
LD
O3
25
DH326
LX327
BST328
L21IND-4D7UH-16
68.4R71B.1011 2
3.3.2 Debugging : (cont’d)
40 Notebook Power System Introduction & Troubleshooting
3.4.1 Symptom :
• If the previous two symptoms are checked ok, but the system still
has no power on, then we should check the power on logic circuit as
below .
When power button was pressed, PWRBTN# will be pulled low.
After a series of logic actions, the SHUTDOWN_S5 will also be
pulled low.
5V_AUX_S5
5V_AUX_S5
5V_AUX_S5
5V_AUX_S5
DCBATOUT5V_AUX_S5
5V_AUX_S5
5V_AUX_S5
5V_AUX_S5
5V_AUX_S5
BL3# trigger point 11.5V
BL3#
U50B
TSAHCT14
34
14
7
U36A
TSAHCT321
23
14
7R473
1KR3
12
R48047KR3
12
C521SCD1U16V
BC83SCD1U
U51
NC7SZ08-U
A1
B2
GND3
Y4
VCC5
U52
S-80840CNMC
OUT1
VDD2
VSS3
NC5
NC4
R313100KR3
12
R314100KR3
12
R310
10KR3
1 2
R471100KR3
12
U50CTSAHCT14
56
14
7
D29
S1N4148-U
1 2
R48110KR3
12
R46933KR3F
12
R46817K4R3F
12
U34A
TSAHCT74
D2
CLK3
Q5
Q6
VCC14
PR
4
GND7
CL
1
U36BTSAHCT32
4
56
14
7
U36C
TSAHCT32
9
108
14
7
PWRBTN# 25
PM_SLP_S4#
14,15,33,36
SHUTDOWN_S5 33
PURE_HW_SHUT DOWN#16
AC_IN
11,25,35,36
Lo
Hi
Hi
Hi
Hi
Hi Lo
To MAX1999
ON3 3D3V
Power Button
1
1
2
2
1 of 2 3.4 Power on logic N.G :
41 Notebook Power System Introduction & Troubleshooting
• If the power on logic circuit is correct, we can track the south
bridge trigger logic .
When the power button is pressed, PWRBTN# will be pulled low ,
After the logic action, the PWRBTN#_ICH will also be pulled low.
It will trigger south bridge to send PM_SLP_S4 & S3 signal to turn
on S3 & S0 power .
Lo
Lo
Lo
Hi
3D3V_S5
5V_AUX_S5
5V_AUX_S5
5V_AUX_S5
PWRBTN#_1
U50A
TSAHCT14
121
47
U50B
TSAHCT14
34
14
7
R473
1KR3
12
R48047KR3
12
R467 47KR31 2
C521SCD1U16V
C512SCD1U16V
R47910KR3
12
D30
S1N4148-U
1 2
PWRBTN#_ICH14
PWRBTN# 25ICH4M (South bridge )
PM_SLP_S4 & S3
1
1
2
2
3
3
2 of 2 3.4.1 Symptom :
42 Notebook Power System Introduction & Troubleshooting
3.4.2 Debugging :
• If SHUTDOWN_S5 is not pulled low, it means some logic ICs or
components during this path are N.G.. If it is the case, then just
follow the circuit to find out the problems, and replace them.
• If the PWRBTN#_ICH is not pulled low, it means some logic ICs
or components during this path are N.G. If it is the case, then just
follow the circuit to find out the problems, and replace them.
• If the PM_SLP_S4 & S3 is not pulled hi, maybe the south bridge
is damaged .
3. No Power Debug
43 Notebook Power System Introduction & Troubleshooting
Above-mentioned are power system & no power debug .
All of the circuit diagram are references from Yuhina .
---------------- END -------------------
To Sum up :
44 Notebook Power System Introduction & Troubleshooting
E-mail address: [email protected]
Thank You !