Sanyo EP93F User Manual

 

 

   

PRE DRIVE

LOGIC

VS1

PGND1

MUTE

VSMON

CLK

CP1

CPC1

CP2

CPC2

GND

VG

VGREG

FG

S/S

BRK

MODE1

MODE2

PWM

VCC

WOUT

FR

VS

COM

COMIN

FIL

VCO

RMAX

OUT3F

IN3R

IN3F

PGND2

VS2

OUT2R

IN2R

IN2F

OUT1R

OUT1F

IN1R

IN1F

VS3

VCOIN

VOUT

UOUT

PRE DRIVE

LOGIC

PRE DRIVE

LOGIC

OUT2F

OUT3R

PGND3

0.19V

1/2VS

MON

OSC

1/N

1/N

SEL

VG

REG

VCO

PRE DRIVE

LOGIC

LOGIC

PRE DRIVE

PRE DRIVE

LOGIC

LOGIC

LOGIC

S

R

Q

S

R

Q

S

R

Q

CHARGE

PUMP

1/N

OSC1

AREF

AREF

AREF

OSC2

TSD

SENSORLESS

LOGIC

SPINDLE

PREDRIVE

VREF

OSC

SELECTOR

OUT1R

VSI

OUT1F

OUT2F

PGND1

OUT3R

OUT3F

PGND3

PGND4

RF4

VS4

VS3

OUT4F

OUT5F

OUT5R

OUT2R

OUT4R

SPRF

SPGND

WOUT

VOUT

UOUT

SPVS

SPCOM

SPFIL

SPCIN

OSC

BRK

S/S

CF3

IN3

CF2

IN2

IN1

MUTE

CF1

PGND5

RF5

IN5

IN4

PC

CPC

VG

VCTL

SREF

AREF

GSW

VCC

GND

1FG

3FG

SUB

PRE DRIVE

PRE DRIVE

PRE DRIVE

The LV8222W is a system motor driver IC that integrates, on a single chip, all the motor driver circuits required 
by CD and MD players. Since this IC provide both a 3-phase PWM spindle motor driver and sled, focus, and 
tracking drivers (3 PWM H-bridge driver channels), it can contribute to end product motor system miniaturization,
thinner form factors, and reduced power consumption.
Since the spindle motor driver adopts a direct PWM sensorless drive technique, it provides high-efficiency motor 
drive with a minimal number of external components.

■ 

Direct PWM drive

■ 

Three-phase full-wave sensorless motor driver (spindle block)

■ 

Reverse torque braking (spindle block)

■ 

MOS output transistors

■ 

Standby mode power saving function

■ 

Digital inputs, PWM outputs (spindle, sled, focus, and tracking)

■ 

FG output

■ 

VS voltage detection function

■ 

Current limiter circuit

■ 

Thermal protection circuit

■ 

Package: SQFP48 (7    7 mm)

■ 

Direct PWM drive (low side control)

■ 

Three-phase full-wave sensorless motor driver (spindle block)

■ 

Soft switching drive (spindle block)

■ 

Synchronous commutation drive circuit

■ 

Supports switching between reverse torque braking and short-circuit braking (spindle block)

■ 

Analog input, PWM output (focus, tracking, sled, and spindle)

■ 

Current control adopted in the sled block (channels 4 and 5)

■ 

MOS output transistors

■ 

Standby mode power saving function

■ 

FG output (Two outputs: single Hall device equivalent FG (1FG) and three Hall device equivalent FG

    (3FG) outputs)

■

 Current limiter circuit

■ 

Thermal protection circuit

The LV8212T is a system motor driver IC that integrates, on a single chip, all the motor driver circuits required 
by CD and DVD players. Since this IC provide not only a spindle motor driver, but also sled, focus, and 
tracking motor drivers (H-bridge drivers) for a total of 5 driver channels, it can contribute to end product motor 
system miniaturization and thinner form factors. Since the spindle motor driver adopts a direct PWM sensorless 
drive technique, it provides high-efficiency motor drive with a minimal number of external components.

Sensorless drive logic

Phase

comparator

Charge

pump

VG

limiter

Waveform

synthesis

■ 

Package: TQFP64J (7    7 mm)