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42507 ti im b8-6602 / 61004 jo im no.7459-1/12 LV8222W 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 symbol conditions ratings unit power supply voltage v cc 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 i o 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 symbol conditions ratings unit power supply voltage v cc 2.1 to 5.5 v output block power supply voltage vs 0 to 5.5 v predrive voltage (gate voltage) vg vg 9.5v vs+3.5 to vs+4.5 v ordering number : en7459b bi-cmos ic cd/md system motor driver specifications of any and all sanyo semiconductor co.,l td. 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 ' sproductsor equipment. any and all sanyo semiconductor co.,ltd. products described or contained herein are, with regard to "standard application", intended for the use as general el ectronics equipment (home appliances, av equipment, communication device, office equipment, industrial equ ipment etc.). the products mentioned herein shall not be intended for use for any "special application" (medica l equipment whose purpose is to sustain life, aerospace instrument, nuclear control device, burning appliances, t ransportation machine, traffic signal system, safety equipment etc.) that shall require extremely high level of re liability and can directly threaten human lives in case of failure or malfunction of the product or may cause har m to human bodies, nor shall they grant any guarantee thereof. if you should intend to use our products for app lications 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 n o consultation or inquiry before the intended use, our customer shall be solely responsible for the use.
LV8222W no.7459-2/12 electrical characteristics at ta = 25 c, v cc = 2.4v, vs = 2.4v ratings parameter symbol conditions min typ max unit power supply current 1 i cc 1 s/s pin h, mute pin h (when operating) 1.5 2.0 ma power supply current 2 i cc 2 s/s pin l (standby mode) 20 a charge pump output output voltage vg vs = 2.4v 5.9 6.4 6.9 v vg regulator output output voltage vgreg 3.5 4.0 4.5 v overheat protection circuit thermal protection circuit operating temperature tsd *design target 150 180 c hysteresis width ? tsd *design target 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 v cc -0.5 v cc v low level input voltage range vail 0 0.5 v output block output on resistance ron1,2,3 i o = 0.5a, sum of upper and lower outputs 1.5 2.5 ? trise *design target 0.1 s output transmission delay time (h-bridge) tfall *design target 0.1 s ch1, ch2 output pulse widt h 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 v cc -0.5 v cc v low level input voltage range vmul mute on 0 0.5 v spindle motor driver side [output side on resistance] source1 ron(h1) i o = 0.5a, vs = 1.2v, vg = 5.2v, forward tr 0.5 1.0 ? source2 ron(h2) i o = 0.5a, vs = 1.2v, vg = 5.2v, reverse tr 0.5 1.0 ? sink ron(l) i o = 0.5a, vs = 1.2v 0.5 1.0 ? source+sink ron(h+l) i o = 0.5a, vs = 1.2v, vg = 5.2v 1.0 2.0 ? position detection comparator input offset voltage vsofs *design target -9 +9 mv 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 v cc -0.5 v cc v low level input voltage range vssl stop 0 0.5 v current limiter limiter voltage vrf 0.17 0.19 0.21 v break pin high level input voltage range vbrh brake on v cc -0.5 v cc v low level input voltage range vbrl brake off 0 0.5 v pwm pin high level input voltage range vpwmh v cc -0.5 v cc v low level input voltage range vpwml 0 0.5 v pwm input frequency vpwmin 150 khz clk pin high level input voltage range vclkh v cc -0.5 v cc v low level input voltage range vclkl 0 0.5 v * design target value and no measurement is performed. continued on next page.
LV8222W no.7459-3/12 continued from precceding page. ratings parameter symbol conditions min typ max unit fg output pin high level output voltage vfgh i o = -0.5ma v cc -0.5 v cc v low level output voltage vfgl i o = 0.5ma 0 0.5 v mode 1/2 pin high level output voltage vmdh v cc -0.5 v cc 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 sanyo : sqfp48(7x7) 7.0 7.0 9.0 9.0 0.15 0.5 (1.5) 0.1 1.7max 0.18 0.5 (0.75) 112 13 24 25 36 37 48 -20 0 0.5 1.5 0.78 0.26 1.0 2.0 20 0 406080100 ilv00184 mounted on a thermal resistance evaluation board independent ic mounted on a specified board: 114.3mm 76.1mm 1.6mm, glass epoxy pd max - ta allowable power dissipation, pd max - w ambient temperature, ta - c
LV8222W no.7459-4/12 pin assignment block diagram 44 45 46 47 48 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 17 16 15 14 13 18 19 20 21 22 23 24 1 2 3 4 5 6 7 8 9 10 11 12 LV8222W pgnd3 out3 r mute vs3 in1f in1 r in2f in2 r in3f in3 r cl k gnd tgnd vsmon vgre vco vcoin rmax nc mode 2 mode 1 brk pwm s/s comin fil fg v cc vg cpc2 cp2 cpc1 cp1 vs com rf uout vout wout out1f vs1 pgnd1 out1r out2f pgnd2 vs2 out2r out3f top view pre drive pre drive out3f out3r logic in3f in3r pre drive out2f pgnd1 vs1 logic in2f in2r pre drive out1r logic in1f in1r mute pgnd2 out2r fil rf wout vout uout vs waveform synthesizer comin com vco vcoin phase comparator 1/n vco rmax 0.19v cpc1 cp2 cpc2 vg pwm 1/n cl k charge pump cp1 fg s/s brk mode2 gnd v cc LV8222W pgnd3 vs3 vs2 1/2vs mon vsmon vgreg vg reg mode1 sensorless logic vg limitter sel osc out1f
LV8222W no.7459-5/12 sample application circuit v cc vs vs vs vs dsp dsp dsp dsp dsp spindle motor 44 45 46 47 48 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 17 16 15 14 13 18 19 20 21 22 23 24 1 2 3 4 5 6 7 8 9 10 11 12 LV8222W pgnd3 out3r mute vs3 in1f in1r in2f in2r in3f in3r cl k gnd tgnd vsmon vgreg vco vcoin rmax nc mode2 mode1 brk pwm s/s comin fil fg v cc vg cpc2 cp2 cpc1 cp1 vs com rf uout vout wout out1f vs1 pgnd1 out1r out2f pgnd2 vs2 out2r out3f
LV8222W no.7459-6/12 pin functions pin no. pin name pin description equivalent circuit 1 rf output current detection pin. drive current is detected when a resistor with a small value is connected between this pin and ground. 3 vs spindle motor drive power supply. insert a capacitor between this pin and ground. 48 47 46 uout vout wout spindle driver outputs. connect these pins to the spindle motor. 2 com connected to the spindle motor com point. 11 fil connected to the waveform synthesis filter. insert a capacitor between this pin and the comin pin (pin 12). 12 comin position detection comparator differential input. insert a capacitor between this pin and the fil pin (pin 11). 4 cp1 charge pump step-up pulse output. insert a capacitor between this pin and the cpc1 pin (pin 5). leave this pin open when using this circuit as a 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. insert a capacitor between this pin and the cpc1 pin (pin 5). 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. 3 vg 48 47 46 1 v cc v cc 46 v cc 5 7 8 vg 212 600 ? 600 ? 11 6k ? 12k ? 6k ?
LV8222W no.7459-7/12 continued from preceding page. pin no. pin name pin description equivalent circuit 9 v cc small-signal system power supply. insert a capacitor between this pin and ground. 10 fg fg pulse output. this pin outputs a three hall sensor system equivalent pulse signal. 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 high- level 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 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: high-level input: fpwm=fclk/32 low-level input: fpwm=fclk/48 17 mode2 spindle soft switching characteristic switch. select low-level if driving noise is an issue and high-level if torque is important. 26 clk system clock input. 32/31 30/29 28/27 in1f/r in2f/r in3f/r actuator h-bridge logic input 34 mute h-bridge and 3-phase sled muting control. a low-level input goes to the muted state. 18 nc nc 19 rmax vco maximum frequency setting. insert a resistor between this pin and ground. reducing t he value of that resistor increases the maximum vco frequency. continued on next page. v cc 10 v cc 10k ? 214k ? v cc 500 ? 19
LV8222W no.7459-8/12 continued from preceding page. pin no. pin name pin description equivalent circuit 20 vcoin vco control volt age input. insert a capacitor between this pin and ground. 21 vco vco oscillator connection. insert a capacitor between this pin and ground. the vco oscillator frequency follows the speed of the spindle motor. 22 vgreg predrive drive regulator 4v output. insert a capacitor between this pin and ground. continued on next page. v cc 20 1k ? 1k ? v cc 500 ? 500 ? 500 ? 21 vg v cc 20k ? 33.3 ? 44 270k ? 60k ? 130k ?
LV8222W no.7459-9/12 continued from preceding page. pin no. pin name pin description equivalent circuit 23 vsmon supply voltage monitor output outputs 1/2 of the voltage at the vs pin (pin 3). this pin is held low level in standby mode. 24 25 tgnd gnd small-signal system circuit ground 33 39 44 vs3 vs2 vs1 h-bridge power supply. insert capacitors between these pins and ground. 36 40 43 pgnd3 pgnd2 pgnd1 h bridge output block ground connections 37/35 41/38 45/42 out3f/r out2f/r out1f/r h bridge circuit forward/reverse outputs. connect these pins to the motor coils. 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 pw m 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: 1.0 ? typ. for the spindle block, 1.5 ? 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. th at 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 si de transistor is on when the pwm input is high, and off when the pwm input is low.) vs 3 23 600 ? 50k ? 50k ? vg 33 39 44 37 35 41 38 45 42 36 40 43
LV8222W no.7459-10/12 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 so ft switching with the mode 2 pin set at the high level. note that the LV8222W does not use soft switching drive, bu t 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 1.0f capacitor between the vcoin pin (pin 20) and ground, connect a 68 k ? ? 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 spee d is the shortest and such that the variations in startup time are minimized. if the value of this capacitor is too la rge, the variations in the startup time will be excessive, and if too small, the motor may fail to turn. since the optim al value of the vco pin constant differs with the motor characteristics and the startup cu rrent, 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 high- impedance 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 th e 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 resi stor 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 ze ro, insert a resistor with a value of a few k ? ? at the com pin. (caution: verify that insertion of this resist or 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 l ogic reference clock, for step-up circuit pulse generation, and for other purposes. therefore, if the clk signal is supp lied from the dsp, it must always be input in start mode. the clk input signal must have a frequen cy that is either 32 or 48 times th at 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 os cillator circuit operates and supplies the clk signal. in this case, the spindle motor drive operatio n will be hard switching drive.
LV8222W no.7459-11/12 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 th e 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 v cc voltage (design circuit so that stepped-up voltage (vg) is clamped at about vs+4v) can be acquired by inserting a capacitor (recommended value: 0.22f 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) resu lts 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 v cc level is applied, and must be cut before the v cc power supply is turned off. 4) there is an ic-internal diode between the v cc and vg pins. therefore, supply voltages such that v cc >vg must never be applied to this ic. 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. -2.5 -2.0 -1.0 0 1.0 2.0 -1.5 -0.5 0.5 1.5 2.5 in - v out - v LV8222W actuator small-signal i/o characteristics v cc =vs=2.4v pwm=88khz (0-2.4v) -3 -2 -1 0 1 2 3 ilv00186 -100 -80 -40 0 40 80 -60 -20 20 60 100 in - mv out - mv LV8222W actuator small-signal i/o characteristics (magnified ) v cc =vs=2.4v pwm=88khz (0-2.4v) -100 -80 -60 -40 -20 40 0 20 60 80 100 ilv00187 n o l o a d n o l o a d 5 ? 5 ? 1 0 ? 1 0 ? n o l o a d n o l o a d 1 0 ? 1 0 ? 5 ? 5 ? the input and output are smoothed with a low-pass filter consisting of a 1.0k ? resistor and 2.2 f capacitor. the input and output are smoothed with a low-pass filter consisting of a 1.0k ? resistor and 2.2 f capacitor.
LV8222W no.7459-12/12 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 ca re is required with respect to the pattern layout when designing application circuits. 1) ground and v cc /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 v cc (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 clos e 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 w ith 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 comp onents that are also connected to gr ound must be connected to the small- signal system ground with lines that are as short as possible. ps this catalog provides information as of april, 2007. specifications and info rmation herein are subject to change without notice. sanyo semiconductor co.,ltd. assumes no responsib ility for equipment failures that result from using products at values that exceed, even momentarily, rate d values (such as maximum ra tings, operating condition ranges, or other parameters) listed in products specif ications of any and all sanyo semiconductor co.,ltd. products described or contained herein. sanyo semiconductor co.,ltd. strives to supply high-qual ity high-reliability products, however, any and all semiconductor products fail or malfunction with some probabi lity. it is possible that these probabilistic failures or malfunction could give rise to acci dents or events that could endanger human lives, trouble that could give rise to smoke or fire, or accidents that could cause dam age to other property. when designing equipment, adopt safety measures so that these kinds of accidents or e vents cannot occur. such measures include but are not limited to protective circuits and error prevention c ircuits for safe design, redundant design, and structural design. upon using the technical information or products descri bed 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 f or 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. information (including circuit diagr ams and circuit parameters) herein is for example only; it is not guaranteed for volume production. any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. when designing equi pment, refer to the "delivery specification" for the sanyo semiconductor co.,ltd. product that you intend to use. in the event that any or all sanyo semiconductor c o.,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 conc erned 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 in formation storage or retrieval system, or otherwise, without the prior written consent of sanyo semiconductor co.,ltd.

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