Sanyo EP93F manual LV8222W, LV8212T2T

System Motor Driver IC for CD and MD Players

LV8222W

Overview

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.

Functions and Features

■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)

Block Diagram

IN1F

IN1R

OUT1F

OUT1R

IN2F

IN2R

OUT2F

OUT2R

VS2

PGND2

IN3F

IN3R

OUT3F

OUT3R

VS1

VS3

PGND1

PGND3

LOGIC

PRE DRIVE

LOGIC

PRE DRIVE

LOGIC

PRE DRIVE

MUTE

RMAX

VCO

VSMON

1/2VS

VCO

MON

OSC

1/N

Phase

VCOIN

comparator

CLK

SEL

Sensorless drive logic

FIL

COMIN

1/N

VCC

Waveform

PRE DRIVE

COM

synthesis

VG

CP1

VS

limiter

CPC1

Charge

UOUT

VG

pump

CP2

VOUT

REG

WOUT

CPC2

FR

0.19V

GND

VG

VGREG

FG

S/S

BRK

MODE1 MODE2

PWM

System Motorr DriverDriver ICIC forfor CDCD andand DVDDVD PlayersPlayers

LV8212T2T

Overview

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.

Functions and Features

■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 ■ Package: TQFP64J (7 7 mm)

Block Diagram

AREF

SREF VCTL

VG

CPC

PC

IN4

IN5

RF5

PGND5

LOGIC

PRE DRIVE

OUT5F

GSW

CHARGE

PUMP

OUT5R

RF4

PGND4

LOGIC

PRE DRIVE

OUT4F

VCC

S Q

S Q

R

S Q

R

VS4

R

GND

OUT4R

PGND3

1/N

LOGIC

PRE DRIVE

OUT3F

OSC1

TSD

AREF

OSC2

VS3

1FG

OUT3R

3FG

SENSORLESS

PGND1

LOGIC

VREF

SPINDLE

PREDRIVE

LOGIC

PRE DRIVE

OUT2F

AREF

OUT2R

SUB

SELECTOR

OSC

LOGIC

PRE DRIVE

OUT1F

VSI

AREF

OUT1R

SPRF

SPGND

WOUT

VOUT

UOUT

SPVS

SPCOM

SPFIL

SPCIN

OSC

BRK

S/S

CF3

IN3

CF2

IN2

CF1

IN1

MUTE

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