Sony NW-MS6 service manual MPC18A41FCR2

NW-MS6

IC9001		XC6368A281MR
VOUT	1			PHASE
			COMPENSATION
VDD	2				PWM
			+		COMPARATOR
			–		+	BUFFER,		EXT
			ERROR				5
					–	DRIVER
			AMP
		VREF WITH		PWM/PFM	RAMP WAVE
CE	3	SOFT START,			GENERATOR,		4	GND
			CONTROLLER
		CE			OSC

IC9004		XC6365A183MR
		RAMP WAVE		PWM/PFM
		GENERATOR,		CONTROLER
		OSC
EXT/	1	BUFFER,	–	ERROR AMP		5	FB
				+
		DRIVER	+
				–
		PWM
VDD	2
		COMPARATOR
GND	3			PHASE	VREF WITH	4	CE
				COMPENSATION	SOFT START,
					CE

IC9005

MPC18A41FCR2

VIF

VA

VAFB

VDFB

VIFFB

GND

VC

VCO

VC

VCOUT

L1

NC

PGND1

PGND1

42 41

40

39

38

37

36

35

34

33

32

31

30 29

NC

43

VC

VD

44

28

L1

VG

POWER

VC

SWITCH1

–

VLG

VC2

45

+

VC

STEP-UP

VG

XRST

46

VC

XRST

PRE DRIVER

(INT)

VC

–

PWM

+

CRST

47

+

27

RF1

RSTREF

48

–

26

INM1

VC

VREF

49

BANDGAP

25

DTC1

REFERENCE

24

DTC2

VB

–

23

RF2

+

VB

50

VC

22

INM2

PWM

GND

51

VG

21

PWM1

STEP-UP

PRE DRIVER

VSTB

VC

VB

20

EXTSW

VG

VG

VB

VC

VG

CLKSEL

52

VG

POWER

19

VAIFON

53

STEP-UP

SYSTEM

SWITCH2

FFCLR

54

LG

CONTROL

DC/DC

18

SLEEP

55

CONVERTER

CLK

56

VB

PGND2

VB

VC

17

FFCLR

START-UP

16

L2

15

NC

1

2

3

4

5

6

7

8

9

10

11

12

13 14

VLGON

XWK1

XWK2

XWK3

XWK4

VSTB

VRMC

GND

VLGG

VLGG1

VLGG

L2

PGND2

PGND2

29