Sanyo EP93F - Manual (Page 19)

33Car Audio 34 Car Audio
LV8222W LV8222W
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
LV8212T LV8212T
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)
System Motor Driver IC for CD and DVD Players System Motor Driver IC for CD and DVD Players System Motor Driver IC for CD and MD Players System Motor Driver IC for CD and MD Players
■ 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.
Block Diagram Block Diagram
Overview
Functions and Features
Overview
Functions and Features
Sensorless drive logic
Phase
comparator
Charge
pump
VG
limiter
Waveform
synthesis
■ Package: TQFP64J (7 7 mm)