Download - K_S NOTE Power Study
1 Presentation Title
K_S NOTE Power Study
NDK100/ PE Jimmy
2 Presentation Title
1. (1) DOCK_PWR19_F&VREGIN19& VCC3SW Power generate process with adapter
F10Adapter In Dock_PWR19_F
U12
F14
CV19
VREGIN19
3 Presentation Title
Input
output
VREGIN19
VCC3SW
U74 VCC3SW
因此只要 power VREGIN19 supply to U74 , 無須控制信號 U74 產生 VCC3SW
4 Presentation Title
DOCK_PWR19_F&VREGIN19& VCC3SW Power Sequence
CV19U13
VINT19
When DCIN_DRV=H, 打開 U13 and generate VINT19
VINT19
5 Presentation Title
1. (2) VREGIN19& VINT19 Power generate process with battery
Battery insert F8M-BAT-PWR
F12
U41/U45
VREGIN19
VINT19BAT-PWR-17U48
6 Presentation Title
2.Power on Enable signal generate
DOCK_PWR19 VINT19
when adapter insert and U64 detect AC power OK , then generate EXTPWR.
7 Presentation Title
EXTPWR 信號 be sent to Q50 產生 EXTPWR_PMH .
Of course , system need Power VL5 來打開 Q50 .
VL5 generate process as next page:
EXTPWR_PMH generate process and Power Sequence
8 Presentation Title
VL5
When U58 detect VINT19 OK , 產生MAX1977_LCDO5 , 再通過 R189 產生 VL5
VINT19U58
MAX1977_LOD5R189
Vl5
9 Presentation Title
M1_ON & M2_ON&AUX_ON
EXTPWR_PMH
EXTPWR_PMH
U72M1_ON
M2_ON
AUXON
Control Signal be sent to U72 , 然后產生 Control Signal M1_ON/M2_ON/AUX_ON
PWH7
10 Presentation Title
M1_ON & M2_ON&AUX_ON Sequence
11 Presentation Title
PWH Control Signal Sequence
這里順便了解一下 PWH Control Signal Sequence
(1) System detect EXTPWR OK then generate M_ON & AUX_ON (2) System detect PWRSTWITCH OK then generate A_ON &B_ON ,也就是說﹕ System generate M_ON & AUX_ON before pressing power button System generate A_ON & B_ON after pressing power button
12 Presentation Title
VCC3M_ON & VCC5M_ON & VCC1R5M_ON & VCC1R2AUX_ON & VCC3AUX_ON
13 Presentation Title
VCC3M & VCC5M
Output VCC3M Output VCC5M
Enable Signal : VCC5M_ON
VCC5M_ON
VINT19 U72 Max1977
VCC3M&VCC5M
14 Presentation Title
VCC3M & VCC5M Sequence
15 Presentation Title
MPWRGVCC5M
VCC3M
When U74 detect VCC3M&VCC5Mall OK , then it send MPWRG
BD4175KVT
U74VCC3M&VCC5M
VREGIN19MPWRG
16 Presentation Title
MPWRG Sequence
17 Presentation Title
MPWRG Signal
AND5M_ON & 3M_ON
VCC3M&VCC5M
M_PGS
generate high signal when the following condition are satisfied.
(1) VCC3M_ON& VCC5M_ON High
(2) VCC5M Voltage SPEC: 4.311V~4.461V VCC3M Voltage SPEC : 2.793V~2.943V
shut down when the following condition are satisfied
(3) VCC5M < 4.311V or VCC5M > 4.461V , M_PGS shut down
(4) VCC3M> 2.943V or VCC3M< 2.793V , M_PGS shut t down
18 Presentation Title
VCC1R5M
Output
Control signal
Power
U57Max1540
VCC5M&VINT19
VCC1R5M_ON VCC1R5M
19 Presentation Title
VCC1R5M Sequence
20 Presentation Title
VCC1R2AUX
VCC1R2AUX
VCC1R5MU35 VCC1R2AUX
21 Presentation Title
VCC1R2AUX Sequence
22 Presentation Title
VCC2R5M
VCC3MU30
VCC2R5M
23 Presentation Title
VCC2R5AUX & VCC3AUX
VCC3AUX_ON
VREGIN19 U74 VCC3AUX_DRV
VCC2R5M
VCC3M
Q46
Q49
VCC2R5AUX
VCC3AUX
24 Presentation Title
VCC2R5AUX & VCC3AUX Sequence
25 Presentation Title
以上介紹的 Power 是在 Adapter insert system but do not power on 產生的 ,
下面介紹 Power on 后系統的上電情況 .
Summary