Block diagram – LG GSA-4167B User Manual

Page 67

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background image

Block Diagram

71

STM

M

S

W

ICHING

C

o

mmu

ta

ti

o

n

PW

M

CIRC

UIT

SPM

V/V c

onverter

+

-

CTL

SLIDE

2

V/V c

onverter

+

-

CT

L

+

-

CT

L

SL1+

SL1-

SL1IN

SL2+

SL2-

SL2IN

REF

SPIN

FG

U

V

W

FOIN

FO+

FO-

TRIN

TR+

TR-

VM2

SLIDE

1

V/V c

onverter

PW

M

CIRC

UIT

PW

M

CIRC

UIT

Current

sens

e

Current

sens

e

Current

sens

e

GND

GND

DSP

DSP

DSP

DSP

DSP

DSP

DSP

B

T

L

A

M

P

C

u

rr

e

n

t

c

h

o

p

p

e

r

P

W

M

C

u

rr

e

n

t

c

h

o

p

p

e

r

P

W

M

SPL

IM

DSP

5VCC

SLLIM

c

o

mm

utation

ST

ART

ER

CL

K

TLIN

TL+

TL-

ST

T

H

Cu

rr

en

t

g

ai

n

0.88 A

/V

B

T

L

A

M

P

B

T

L

A

M

P

OUT

PUT

Ro

n

1ohm

OUT

PUT

Ro

n

1.5ohm

OUT

PUT

Ro

n

1.5ohm

OUT

PUT

Ro

n

1.5ohm

OUT

PUT

Ro

n

1.8 oh

m

6.4

M

H

z

Fr

e

q

ue

nc

y

75KHz

Fr

e

q

ue

nc

y

75KHz

Fr

e

q

ue

nc

y

150KHz

Cu

rr

en

t

g

ai

n

0.88 A

/V

Cu

rr

en

t

g

ai

n

3A

/V

0.6

A

/V

OUT

PUT

Ro

n

1.8 oh

m

F

o

r /FO

/T

R

/T

ILT

VM1

GND

BA

CK

EMF

DETE

CT

ER

TS

D

S

IN

C

ur

re

nt

c

ho

p

pe

r

P

WM

Fo

r

SPI

ND

LE

Fo

r

S

L

ID

E

7-

13.

2V

7-

13.

2V

4.5-

5

.5V

FG(x3)

Rever

s

e

dete

c

t

Vo

lt

a

g

e

g

ai

n

x

12

Vo

lt

a

g

e

g

ai

n

x

12

Vo

lt

a

g

e

g

ai

n

x

12

LO+

LO-

VM3

DSP

M

OUT

PUT

Ro

n

1.5oh

m

GND

H B

ridge

+ -

EN

1

DS

P

EN

2

DS

P

Fo

r

L

OADI

NG

4.5-

5

.5V

7-

13.

2V

TE

S

T

SP

G

S

G

a

in Se

lec

t

(SPM)

ENAB

LE

COMMO

N

ACT

RS

T

ACTFLG

DSP

DSP

Pic

kup Pr

otect

T

EST

m

ode

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