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Ordering number : ENN7812

SANYO Semiconductors

Ordering number : ENN7812
SANYO Semiconductors
DATA SHEET
Bi-CDMOS IC
LV8223T
Overview
Motor driver system in CD and MD players
The LV8223T is a system driver IC that can implement, with a single chip, all the motor driver circuits required in CD and MD drives. The LV8223T provides three-phase PWM spindle, three-phase sled, focus, and tracking drivers. Since it integrates lifting drivers (three PWM H bridge channels) and one half-bridge channel on the same chip, it can contribute to further miniaturization, thinner form factors, and lower power in end products. The spindle motor driver adopts a direct PWM sensorless drive technique for highly efficient motor drive requiring a minimal number of external components.
Functions
· · · · PWM H bridge motor drivers (3 channels) Three-phase stepping motor driver Half-bridge driver Direct PWM sensorless motor driver
Specifications
SANYO Electric Co., Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
52504TN (OT) No.7812-1 / 14
LV8223T
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LV8223T
Package Dimensions
unit : mm 3289
PCB mounted
Allowable power dissipation, Pdmax - W
Independent IC
1.2max
100 ILV00176
Ambient temperature, Ta - °C
Actuator Truth Tables Focus, Tracking, and Head Up / Down Driver Blocks
Sled Stepping Motor Driver Block
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LV8223T
Pin Assignment
PGND4
TGND 1 SPGND
SPVS FIL COMIN SGND SGND VCO RMAX VCOIN MODE1 S / S MUTE3 IN4 BRK PWM PGND3 PGND2 PGND1 OUT3R OUT2R OUT1R OUT3F OUT2F OUT1F IN3R IN1R
SLGND FG 48 SLVS 47 S3 46 S2 45 S1 44 VCC 43 VCC 42
LV8223T
VG 41 CPC2 40 CPC1 39 CP2 38 CP1 37 MUTE2 36 MUTE 35 IN2F 34 IN2R 33 IN1F
CLK IN3F
Top view
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LV8223T
Pin Function
Pin No. Pin Name Pin Description Equivalent circuit
SPGND
Spindle output block ground
2 SPVS Spindle motor driver power supply. Insert a capacitor between this pin and ground.
UOUT VOUT WOUT
Outputs. Connect these pins to the spindle motor coils.
Spindle motor common point connection
VCC VG
Spindle motor position detector comparator filter connection. Insert a capacitor between this pin and the COMIN pin (pin 4).
COMIN
Spindle motor position detector comparator differential input. Insert a capacitor between this pin and the FIL pin (pin 3).
SGND TGND
Small signal system ground
VCO oscillator connection. Insert a capacitor between this pin and ground. The VCO oscillator frequency follows the speed of the spindle motor.
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LV8223T
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Pin No. Pin Name Pin Description Equivalent circuit
VCO maximum frequency setting. Insert a resistor between this pin and ground. Reducing the value of that resistor increases the maximum VCO frequency.
VCO control voltage input. Insert a capacitor between this pin and ground. A control output proportional to the motor speed is generated by IC internal logic, and this is used to charge and discharge the capacitor. The voltage on this pin controls the VCO oscillator frequency.
VCOIN
Spindle block brake function control. A low-level input to this pin switches the IC to reverse torque brake mode.
44 45 46 S1 S2 S3 Sled block logic inputs
VS3 VS2 VS1
H bridge circuit power supply. Insert capacitors between these pins and ground.
PGND3 PGND2 PGND1
H bridge output block ground connections
OUT3F / R OUT2F / R OUT1F / R
H bridge circuit forward / reverse outputs. Connect these pins to the motor coils.
Continued on next page.
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LV8223T
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MODE1
MUTE3
Actuator H bridge block logic inputs
H bridge 1 and 2, and 3 phase sled muting control. The OUT1R / F, OUT2R / F, SUO, SVO, and SWO pins go to the high-impedance state (muted state) when a low level is input to this pin.
MUTE2
H bridge 3 muting control. The OUT3R / F pin goes to the high-impedance state (muted state) when a low level is input to this pin.
Charge pump step-up pulse output. Insert a capacitor between this pin and the CPC1 pin (pin 39). Leave this pin open if a voltage stepped up by a factor of 2 is to be used.
Charge pump step-up pulse output. Insert a capacitor between this pin and the CPC2 pin (pin 40).
Charge pump step-up connection. Insert a capacitor between this pin and the CP1 pin (pin 37).
Charge pump step-up connection. Insert a capacitor between this pin and the CP2 pin (pin 38).
Charge pump step-up output. Insert a capacitor between this pin and ground.
Power supply used for the small signal system. Insert a capacitor between these pins and ground.
Continued from preceding page.
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LV8223T
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Pin No. Pin Name Pin Description Spindle FG pulse signal output. This pin outputs a signal equivalent to the signal provided when 3 Hall sensors are used. Equivalent circuit
Sled block SUO output phase position detector comparator output
Sled block SVO output phase position detector comparator output
Sled block SWO output phase position detector comparator output
SLGND
Sled output block ground
47 SLVS Sled motor drive power supply. Insert a capacitor between this pin and ground
SUO SVO SWO
Outputs. Connect these pins to the sled motor coils.
Sled motor common point connection
Half bridge output. Connect this pin to the motor coil.
Half bridge power supply. Insert a capacitor between this pin and ground.
PGND4
Half bridge output block ground
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LV8223T
Block Diagram
PGND1
PGND2
OUT2F OUT2R
PGND3
OUT1F OUT1R
OUT3F OUT3R
MUTE2
S1 S2 S3 From DSP
Logic
Pre drive
Logic
Pre drive
Logic
Pre drive
Logic
MUTE SUCO SVCO
To DSP
Pre drive
Waveform distributor Waveform synthesizer
Logic
SLGND SUO SVO SWO
SWCO MUTE3 IN4
Pre drive
RMAX RMIN
LV8223T
Phase comparator
PGND4
VCOIN
From DSP
VCC VCC
Commutation logic
COMIN
Pre drive
Waveform COM synthesizer
SPVS SPVS
CP1 CPC1 CP2
Charge pump
UOUT VOUT WOUT
MODE BRK
SPGND
PWMIN
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LV8223T
Sample Application Circuit
PGND4
TGND SPGND SPVS FIL COMIN SGND SGND VCO RMAX VCOIN MODE1 S / S MUTE3 IN4 BRK
SLGND FG 48 SLVS S3 S2 S1 VCC VCC
0.0022 µF
0.0033 µF
0.22 µF 0.22 µF
LV8223T
VG CPC2 CPC1 CP2 CP1 MUTE2 MUTE
0.47 µF
0.22 µF
PGND3
PGND2
PGND1
OUT3R
OUT2R
OUT1R
OUT3F
OUT2F
OUT1F
PWM IN3R VS3 CLK IN3F
IN2F IN1R
IN2R IN1F
Capacitors must be inserted between each VS and PGND pair, and between each VCC and SGND pair.
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