Ordering number : EN7459B LV8222W Bi-CMOS IC CD/MD System Motor Driver Overview The LV8222W is a CD/MD system motor driver. Features • PWM H-bridge motor diver (3ch) and direct PWM sensorless motor driver. Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Power supply voltage Symbol Conditions Ratings Unit VCC max 6.0 V Output block power supply voltage VS max 6.0 V Pre-drive voltage (gate voltage) VG max 9.5 V Output current IO max 0.8 A Power dissipation 1 Pd max1 Independent IC 0.5 W Power dissipation 2 Pd max2 Glass epoxy board: 114.3mm×76.1mm×1.6mm 1.5 W Operating temperature Topr -20 to +85 °C Storage temperature Tstg -55 to +150 °C Recommended operating voltage at Ta = 25°C Parameter Power supply voltage Symbol Conditions VCC Output block power supply voltage VS Predrive voltage (gate voltage) VG VG ≤ 9.5V Ratings Unit 2.1 to 5.5 V 0 to 5.5 V VS+3.5 to VS+4.5 V Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to "standard application", intended for the use as general electronics equipment (home appliances, AV equipment, communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee thereof. If you should intend to use our products for applications outside the standard applications of our customer who is considering such use and/or outside the scope of our intended standard applications, please consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our customer shall be solely responsible for the use. Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer' s products or equipment. To verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer' s products or equipment. 42507 TI IM B8-6602 / 61004 JO IM No.7459-1/12 LV8222W Electrical Characteristics at Ta = 25°C, VCC = 2.4V, VS = 2.4V Parameter Symbol Ratings Conditions min Power supply current 1 ICC1 S/S pin H, MUTE pin H (when operating) Power supply current 2 ICC2 S/S pin L (standby mode) typ Unit max 1.5 2.0 mA 20 µA 6.9 V Charge pump output Output voltage VG VS = 2.4V 5.9 6.4 VG regulator output Output voltage VGREG 3.5 4.0 4.5 V Overheat protection circuit Thermal protection circuit operating temperature Hysteresis width TSD *Design target ∆TSD *Design target 150 180 °C 40 °C Power supply monitor Monitor output voltage VSMON VS = 2.4V 1.1 1.2 1.3 V Actuator block [Actuator input pin] High level input voltage range VAIH VCC-0.5 VCC V Low level input voltage range VAIL 0 0.5 V Output block Output ON resistance Ron1,2,3 TRISE Output transmission delay time (H-bridge) TFALL Ω IO = 0.5A, sum of upper and lower outputs 1.5 *Design target 0.1 µs *Design target 0.1 µs 2.5 Ch1, ch2 output pulse width is 2/3 tmin or more Minimum input pulse width Tmin *Design target 200 ns MUTE pin High level input voltage range VMUH MUTE OFF Low level input voltage range VMUL MUTE ON VCC-0.5 VCC V 0 0.5 V Spindle motor driver side [Output side ON resistance] SOURCE1 Ron(H1) IO = 0.5A, VS = 1.2V, VG = 5.2V, forward TR 0.5 1.0 Ω SOURCE2 Ron(H2) IO = 0.5A, VS = 1.2V, VG = 5.2V, reverse TR 0.5 1.0 Ω IO = 0.5A, VS = 1.2V 0.5 1.0 Ω IO = 0.5A, VS = 1.2V, VG = 5.2V 1.0 2.0 Ω +9 mV SINK SOURCE+SINK Ron(L) Ron(H+L) Position detection comparator Input offset voltage VSOFS *Design target -9 VCO pin VCO High level voltage VCOH 0.6 0.8 1.0 V VCO Low level voltage VCOL 0.3 0.5 0.7 V S/S pin High level input voltage range VSSH Start VCC-0.5 VCC V Low level input voltage range VSSL Stop 0 0.5 V 0.21 V VCC-0.5 VCC V 0 0.5 V Current limiter Limiter voltage VRF 0.17 0.19 BREAK pin High level input voltage range VBRH Brake ON Low level input voltage range VBRL Brake OFF PWM pin High level input voltage range VPWMH VCC-0.5 VCC V Low level input voltage range VPWML 0 0.5 V PWM input frequency VPWMIN 150 kHz VCC V 0.5 V CLK pin High level input voltage range VCLKH VCC-0.5 Low level input voltage range VCLKL 0 * Design target value and no measurement is performed. Continued on next page. No.7459-2/12 LV8222W Continued from precceding page. Parameter Symbol Ratings Conditions min typ Unit max FG output pin High level output voltage VFGH IO = -0.5mA Low level output voltage VFGL IO = 0.5mA VCC-0.5 VCC V 0 0.5 V MODE 1/2 pin High level output voltage VMDH VCC-0.5 VCC V Low level output voltage VMDL 0 0.5 V Actuator Truth Table H Bridge Block MUTE IN1 to 3F IN1 to 3R OUT1 to 3F OUT1 to 3R H L L L L H H L H L H L H L H H H H L L L × × Z Z Package Dimensions unit : mm (typ) 3163B 0.5 36 25 24 7.0 9.0 37 48 13 1 12 0.5 0.18 0.15 (0.75) Allowable power dissipation, Pd max - W 2.0 9.0 7.0 1.5 Pd max - Ta Mounted on a specified board: 114.3mm×76.1mm×1.6mm, Mounted on a thermal resistance glass epoxy evaluation board 1.0 0.78 0.26 0 -20 0 20 40 60 (1.5) Ambient temperature, Ta - °C 80 100 ILV00184 0.1 1.7max Independent IC 0.5 SANYO : SQFP48(7X7) No.7459-3/12 LV8222W 48 47 46 45 44 43 42 41 40 39 38 37 WOUT OUT1F VS1 PGND1 OUT1R OUT2F PGND2 VS2 OUT2R OUT3F 1 UOUT RF VOUT Pin Assignment 2 COM 3 VS 4 CP1 VS3 33 5 CPC1 IN1F 32 6 CP2 7 CPC2 IN2F 30 8 VG IN2R 29 9 VCC IN3F 28 PGND3 36 OUT3R 35 MUTE 34 IN1R 31 LV8222W 15 16 17 18 19 20 21 22 VSMON VGRE RMAX NC BRK PWM 12 COMIN S/S 13 14 VCO CLK 26 VCOIN 11 FIL MODE2 IN3R 27 MODE1 10 FG GND 25 TGND 23 24 Top view Block Diagram IN1F IN1R OUT1F OUT1R IN2F IN2R OUT2F OUT2R VS2 PGND2 IN3F IN3R OUT3F OUT3R VS1 VS3 PGND3 PGND1 LOGIC PRE DRIVE LOGIC PRE DRIVE LOGIC PRE DRIVE MUTE RMAX VCO VSMON 1/2VS MON 1/N OSC CLK VCO LV8222W Phase comparator VCOIN FIL Sensorless logic SEL COMIN VCC 1/N PRE DRIVE VG limitter CP1 CPC1 CP2 Charge pump Waveform synthesizer COM VS UOUT VOUT WOUT VG REG CPC2 RF 0.19V GND VG VGREG FG S/S BRK MODE2 PWM MODE1 No.7459-4/12 LV8222W Sample Application Circuit Spindle motor VS 48 47 46 45 44 43 42 41 40 39 38 37 UOUT VOUT WOUT OUT1F VS1 PGND1 OUT1R OUT2F PGND2 VS2 OUT2R VS OUT3F 1 RF 2 COM 3 VS 4 CP1 VS3 33 5 CPC1 IN1F 32 6 CP2 7 CPC2 IN2F 30 8 VG IN2R 29 VCC 9 VCC IN3F 28 DSP 10 FG IN3R 27 11 FIL CLK 26 OUT3R 35 MUTE 34 LV8222W PWM BRK MODE1 MODE2 NC RMAX VCOIN VCO VGREG VSMON TGND 13 14 15 16 17 18 19 20 21 22 23 24 12 COMIN DSP DSP VS IN1R 31 S/S VS PGND3 36 DSP GND 25 DSP No.7459-5/12 LV8222W Pin Functions Pin Pin No. Name 1 RF Pin Description Equivalent Circuit Output current detection pin. 3 Drive current is detected when a resistor with a small value is VG connected between this pin and ground. 3 VS Spindle motor drive power supply. Insert a capacitor between this pin and ground. 48 UOUT Spindle driver outputs. Connect 47 VOUT these pins to the spindle motor. 46 WOUT 2 COM 48 47 46 VCC 1 Connected to the spindle motor COM point. VG 11 FIL Connected to the waveform synthesis filter. Insert a capacitor between this pin and the COMIN pin (pin 12). 600Ω 2 600Ω 12 11 12kΩ 6kΩ 12 COMIN Position detection comparator differential input. Insert a capacitor 6kΩ between this pin and the FIL pin (pin 11). 4 CP1 Charge pump step-up pulse output. Insert a capacitor between this pin 4 6 and the CPC1 pin (pin 5). Leave this pin open when using this circuit as a VCC 2× step-up circuit. 6 CP2 Charge pump step-up pulse output. Insert a capacitor between this pin and the CPC2 pin (pin 7). 5 CPC1 Charge pump step-up connection. 5 Insert a capacitor between this pin and the CPC1 pin (pin 5). 7 VCC 8 7 CPC2 Charge pump step-up connection. Insert a capacitor between this pin and the CPC2 pin (pin 7). 8 VG Charge pump stepped up voltage output. Insert a capacitor between this pin and ground. Continued on next page. No.7459-6/12 LV8222W Continued from preceding page. Pin Pin No. Name 9 VCC Pin Description Equivalent Circuit Small-signal system power supply. Insert a capacitor between this pin and ground. 10 FG FG pulse output. VCC This pin outputs a three Hall sensor system equivalent pulse signal. 10 13 S/S Spindle motor block start/stop control. A high-level input sets the block to start mode. 14 PWM Spindle PWM signal input. A highlevel input turns on the transistor. 15 BRK Spindle motor brake. A low-level input applies the forward torque and a high-level input switches to brake VCC mode. 16 MODE1 Spindle PWM frequency switch. The input frequency relationship between the CLK pin (pin 26) and the PWM pin (pin 14) is as follows: 10kΩ High-level input: fPWM=fCLK/32 Low-level input: fPWM=fCLK/48 MODE2 Spindle soft switching characteristic 214kΩ 17 switch. Select low-level if driving noise is an issue and high-level if torque is important. 26 CLK 32/31 IN1F/R 30/29 IN2F/R 28/27 IN3F/R 34 MUTE System clock input. Actuator H-bridge logic input H-bridge and 3-phase sled muting control. A low-level input goes to the muted state. 18 NC 19 RMAX NC VCO maximum frequency setting. Insert a resistor between this pin and VCC ground. Reducing the value of that resistor increases the maximum VCO frequency. 500Ω 19 Continued on next page. No.7459-7/12 LV8222W Continued from preceding page. Pin Pin No. Name 20 VCOIN Pin Description Equivalent Circuit VCO control voltage input. Insert a VCC capacitor between this pin and ground. 20 1kΩ 1kΩ 21 VCO VCO oscillator connection. VCC Insert a capacitor between this pin and ground. The VCO oscillator frequency follows the speed of the spindle motor. 500Ω 21 500Ω 500Ω 22 VGREG Predrive drive regulator 4V output. Insert a capacitor between this pin VG VCC and ground. 20kΩ 33.3Ω 44 270kΩ 60kΩ 130kΩ Continued on next page. No.7459-8/12 LV8222W Continued from preceding page. Pin Pin No. Name 23 VSMON Pin Description Equivalent Circuit Supply voltage monitor output VS Outputs 1/2 of the voltage at the VS 3 pin (pin 3). This pin is held low level in standby mode. 50kΩ 600Ω 23 50kΩ 24 TGND 25 GND Small-signal system circuit ground 33 VS3 H-bridge power supply. 39 VS2 Insert capacitors between these pins 44 VS1 and ground. VG 33 39 44 36 PGND3 H bridge output block ground 40 PGND2 connections 43 PGND1 37/35 OUT3F/R H bridge circuit forward/reverse 41/38 OUT2F/R outputs. 45/42 OUT1F/R Connect these pins to the motor coils. 37 35 41 38 45 42 36 40 43 LV8222W Functional Description and Notes on External Components The LV8222W is a system driver IC that implements, in a single chip, all the motor driver circuits required for CD and MD players. Incorporating the 3-phase PWM spindle motor driver as well as the sled, focus, and tracking drivers (PWM H-bridge×3 channels), the IC contributes toward set miniaturization, low profiling, and low power dissipation. Since the spindle motor driver uses a direct PWM sensorless drive technique, it achieves high-efficiency motor drive with a minimal number of external components. Read the following notes before designing driver circuits using the LV8222W to design a system with fully satisfactory characteristics. 1. Output Drive Circuit and Speed Control Methods The LV8222W adopts the synchronous commutation direct PWM drive method to minimize power loss in the output circuits. Low on-resistance DMOS devices (output block high and low on-resistance s: 1.0Ω typ. for the spindle block, 1.5Ω typ. for the actuator block) are used as the output transistors. The spindle motor driver speed is controlled by BRK and PWM signals provided by an external DSP. The PWM signal controls the sink side transistor. That transistor is switched according to the input duty of the signal input to the PWM pin (pin 14) to control the motor speed. (The sink side transistor is on when the PWM input is high, and off when the PWM input is low.) No.7459-9/12 LV8222W 2. Soft Switching Circuit This IC uses variable duty soft switching to minimize motor drive noise. An excitation current on/off dual-sided soft switching or off soft switching can be selected by the MODE 2 pin (pin 17). If a motor driving noise is an issue, select excitation current on/off soft switching with the MODE 2 pin set at the low level. If a motor drive torque is important, select off soft switching with the MODE 2 pin set at the high level. Note that the LV8222W does not use soft switching drive, but instead uses hard switching drive, if it is not supplied with a CLK signal from the DSP. In this operating mode, the CLK signal is provided by an internal oscillator circuit. 3. VCO Circuit Constant The LV8222W spindle block adopts a sensorless drive technique. Sensorless drive is implemented by detecting the back EMF signal generated by the motor and setting the commutation timing accordingly. Thus the timing control uses the VCO signal. We recommend using the following procedure to determine the values of the VCO circuit’s external components. 1) Connect components with provisional values. Connect a 1.0µF capacitor between the VCOIN pin (pin 20) and ground, connect a 68 kΩ resistor between the RMAX pin (pin 19) and ground, and connect a 3300pF capacitor between the VCO pin (pin 21) and ground. 2) Determine the value of the VCO pin (pin 21) capacitor. Select a value such that the startup time to the target speed is the shortest and such that the variations in startup time are minimized. If the value of this capacitor is too large, the variations in the startup time will be excessive, and if too small, the motor may fail to turn. Since the optimal value of the VCO pin constant differs with the motor characteristics and the startup current, the value of this component must be verified again if the motor used or any circuit specifications are changed. 3) Determine the value of the RMAX pin (pin 19) resistor. Select a resistor value such that the VCOIN pin voltage is about VCC – 1.0 V or lower with the motor operating at the target maximum speed. If the value of this resistor is too large, the VCOIN pin voltage may rise excessively. 4) Determine the value of the VCOIN pin (pin 20) capacitor. If the FG output (pin 10) pulse signal becomes unstable at the lowest motor speed that will be used, increase the value of the VCOIN pin capacitor. 4. S/S and MUTE Circuits The S/S pin (pin 13) functions as the spindle motor driver’s start/stop pin; a high-level input specifies that the operation is in the start state. The MUTE pin (pin 34) operates on all driver blocks other than the spindle block; a low-level input mutes these outputs. In the muted state, the corresponding drivers (H bridge) all go to the highimpedance state, regardless of the states of the logic inputs. Since the S/S and MUTE pins operate independently, low-level inputs must be applied to both the S/S and MUTE pins to set the IC to the standby state (power saving mode). 5. Braking Circuit The BRK pin (pin 15) switches the direction of the torque applied by the spindle motor driver; when a high level is applied to the BRK pin, the driver switches to reverse torque braking mode. When the motor decelerates to an adequately low speed in reverse torque braking mode, the driver switches to short-circuit braking mode to stop the motor. (Note: the IC cannot be set to low-power mode at this time.) Note that when stopping the motor with the braking function, if this circuit switches to short-circuit braking too quickly and problems such as the motor remaining in motion occur, the value of the resistor connected to the RMAX pin (pin 19) must be reduced. If the motor moves back and forth without stopping and the IC does not switch to short-circuit braking when the speed approaches zero, insert a resistor with a value of a few kΩ at the COM pin. (Caution: Verify that insertion of this resistor does not degrade the startup characteristics.) 6. Note on the CLK and PWM signals The LV8222W CLK pin (pin 26) is used as the sensorless logic reference clock, for step-up circuit pulse generation, and for other purposes. Therefore, if the CLK signal is supplied from the DSP, it must always be input in start mode. The CLK input signal must have a frequency that is either 32 or 48 times that of the PWM input signal. The MODE1 pin (pin 16) selects the relationship between the CLK and PWM frequencies. If the CLK signal is 32 times the PWM signal, the MODE1 pin must be set high, and if the CLK signal is 48 times the PWM signal, the MODE1 pin must be set low. We recommend that the CLK input frequency be less than 7MHz. As was mentioned previously in the section on soft switching, if the CLK signal is not supplied by the DSP (the CLK pin is left open or is shorted to ground), the internal oscillator circuit operates and supplies the CLK signal. In this case, the spindle motor drive operation will be hard switching drive. No.7459-10/12 LV8222W 7. FG Output Circuit The FG pin (pin 10) is the spindle block FG output. It outputs a pulse signal equivalent to a three Hall sensor FG output. This output has an MOS circuit structure. 8. Spindle Block Position Detection Comparator Circuit The spindle block position detection comparator circuit is provided to detect the position of the rotor using the back EMF generated when the motor turns. The IC determines the timing with which the output block applies current to the motor based on the position information acquired by this circuit. Startup problems due to comparator input noise can be resolved by inserting a capacitor (about 1000 to 4700pF) between the COMIN pin (pin 12) and the FIL pin (pin 11). Note that if this capacitor is too large, the output commutation timing may be delayed at higher speeds and efficiency may be reduced. 9. Charge Pump Circuit The LV8222W n-channel DMOS output structure allows it to provide a charge pump based voltage step-up circuit. A voltage VS+4V of the VCC voltage (Design circuit so that stepped-up voltage (VG) is clamped at about VS+4V) can be acquired by inserting a capacitor (recommended value: 0.22µF or larger) between the CP2 and CPC2 pins. We recommend using this circuit with values such that the voltage relationship between the stepped-up voltage (VG) and the motor supply voltage (VS) is VG-VS≥3.5V. A larger capacitor must be used on the VG pin if the ripple on the stepped-up voltage (VG) results in VGmax exceeding 9.5V. Observe the following points if the VG voltage is supplied from external circuits. 1) The VG voltage supplied from the external circuits must not exceed the absolute maximum rating VGmax. 2) The capacitor between the CP1 and CPC1 pins (pin 4 and 5) and between CP2 and CPC2 (pin 6 and 7) are not required. 3) The VG voltage must be applied in the correct order. The VG voltage must be applied after the VCC level is applied, and must be cut before the VCC power supply is turned off. 4) There is an IC-internal diode between the VCC and VG pins. Therefore, supply voltages such that VCC>VG must never be applied to this IC. 3 LV8222W Actuator Small-Signal I/O Characteristics VCC=VS=2.4V PWM=88kHz (0-2.4V) 2 d loa No 1 0Ω 5Ω 1 100 d loa No 5Ω -2 -3 -2.5 -1.5 20 0 -20 -60 -80 -1.0 -0.5 0 0.5 1.0 1.5 2.0 2.5 ILV00186 IN - V The input and output are smoothed with a low-pass filter consisting of a 1.0kΩ resistor and 2.2µF capacitor. 5Ω 40 -40 Ω 10 -2.0 ad lo No 10Ω 60 0 -1 LV8222W Actuator Small-Signal I/O Characteristics (magnified) VCC=VS=2.4V PWM=88kHz (0-2.4V) 80 OUT - mV OUT - V 10. Actuator Block The LV8222W incorporates three H bridge channels for use as actuator drivers for the sled, focus, and tracking systems. The logic input pin circuits incorporates pull-down resistors. A PWM signal is used for control, and the circuit supports synchronous commutation. The figures below show reference data related to the dead band during control. -100 -100 5Ω Ω 10 ad lo No -80 -60 -40 -20 0 20 40 60 80 100 ILV00187 IN - mV The input and output are smoothed with a low-pass filter consisting of a 1.0kΩ resistor and 2.2µF capacitor. No.7459-11/12 LV8222W 11. Notes on PCB Pattern Design The LV8222W is a system driver IC implemented in a Bi-DMOS process; the IC chip includes bipolar circuits, MOS logic circuits, and MOS drive circuits integrated on the same chip. As a result, extreme care is required with respect to the pattern layout when designing application circuits. 1) Ground and VCC/VS wiring layout The LV8222W ground and power supply pins are classified as follows. Small-signal system ground pins → GND (pin 25), TGND (pin 24) Large-signal system ground pins → PGND1 (pin 43), PGND2 (pin 40), PGND3 (pin 36) Small-signal system power supply pin → VCC (pin 9) Large-signal system power supply pins → VS (pin 3), VS1 (pin 44), VS2 (pin 39), VS3 (pin 33) A capacitor must be inserted, as close as possible to the IC, between the small-signal system power supply pin (pin 9) and ground pins (pin 25, 26). The large-signal system ground pins (PGND) must be connected with the shortest possible lines, and furthermore in a manner such that there is no shared impedance with the small-signal system ground lines. Capacitors must also be inserted, as close as possible to the IC, between the large-signal system power supply pins (VS) and the corresponding large-signal system ground pins. 2) Positioning the small-signal system external components The small-signal system external components that are also connected to ground must be connected to the smallsignal system ground with lines that are as short as possible. SANYO Semiconductor Co.,Ltd. assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein. SANYO Semiconductor Co.,Ltd. strives to supply high-quality high-reliability products, however, any and all semiconductor products fail or malfunction with some probability. It is possible that these probabilistic failures or malfunction could give rise to accidents or events that could endanger human lives, trouble that could give rise to smoke or fire, or accidents that could cause damage to other property. When designing equipment, adopt safety measures so that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective circuits and error prevention circuits for safe design, redundant design, and structural design. In the event that any or all SANYO Semiconductor Co.,Ltd. products described or contained herein are controlled under any of applicable local export control laws and regulations, such products may require the export license from the authorities concerned in accordance with the above law. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or any information storage or retrieval system, or otherwise, without the prior written consent of SANYO Semiconductor Co.,Ltd. Any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification" for the SANYO Semiconductor Co.,Ltd. product that you intend to use. Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. Upon using the technical information or products described herein, neither warranty nor license shall be granted with regard to intellectual property rights or any other rights of SANYO Semiconductor Co.,Ltd. or any third party. SANYO Semiconductor Co.,Ltd. shall not be liable for any claim or suits with regard to a third party's intellctual property rights which has resulted from the use of the technical information and products mentioned above. This catalog provides information as of April, 2007. Specifications and information herein are subject to change without notice. PS No.7459-12/12