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