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ksd-i7a004-001 1 sept., 2010 rev. 01 5ch btl motor drive ic S3056 marking detail information device code year & week code product marking package S3056 S3056 ssoph-28n description the S3056 contains 4 channels voltage-type btl drivers for actuators [ focus, tracking ] and sled, spindle motor drivers and it also contains 1 channel of bi-directional tray motor driver. furthermore it embraces 2 independent preci sion voltage comparators for external application circuits even amplifying internal drivers. it supports various applications with pb free and heat-sink package. application ? cd-player ? cd-rom ? dvd-player features and benefits ? 1 channel is bi-directional dc motor driver for tray. ? 4 channels are voltage-type btl drivers for actuators[ focus, tracking ] and sled, spindle motors. ? built in general-purpose voltage ope n collector output 2 comparators. ? separating power of vcc1 and vcc2 is to improve power efficiency. ? built in level shift circuit. ? built in thermal shut down circuit. ? built in mute mode. ? dual actuator drivers a general purpose input op provides differential input for signal addition. the output structure is two power opamps in bridge configuration. ? sled motor driver a general purpose input op provides differential input for signal addition. the output structure is one power opamp in bridge configuration. ? spindle driver single input linear btl driver. the output structure are two power opamps in bridge configuration. ? tray bi-directional driver the dc motor driver supports forward/reverse control for tray motor. s s e e m m i i c c o o n n d d u u c c t t o o r r http:// www.auk.co.kr s s s s o o p p h h - - 2 2 8 8 n n with heat-sink ordering information S3056( ) yyww( )
ksd-i7a004-001 2 sept., 2010 rev. 01 ? internal block diagram & pin assignment S3056
ksd-i7a004-001 3 sept., 2010 rev. 01 no symbol i/o description 1 vinfc i input for focus driver 2 op1- i comparator 1 input [-] 3 op1+ i comparator 1 input [+] 4 vinsl i input for sled driver 5 op1o o comparator 1 output 6 fwd i tray driver input signal for forward direction 7 rev i tray driver input signal for reverse direction 8 v cc1 pwr v cc for pre-drive block and power block of sled & tray 9 votr- o tray driver output (-) 10 votr+ o tray driver output (+) 11 vosl+ o sled driver output (+) 12 vosl- o sled driver output (-) 13 vofc- o focus driver output (-) 14 vofc+ o focus driver output (+) 15 votk+ o tracking driver output (+) 16 votk- o tracking driver output (-) 17 vold+ o spindle driver output (+) 18 vold- o spindle driver output (-) 19 v cc2 pwr v cc for power block of focus, tracking and spindle 20 op2o o comparator 2 output 21 vctl - speed control input of tray driver 22 gnd - ground 23 vinld i input for spindle driver 24 op2- i comparator 2 input [-] 25 op2+ i comparator 2 input [+] 26 vintk i input for tracking driver 27 bias i input for reference voltage 28 mute i input for mute control symbol of + and ? [ output of drives ] m eans polarity to input pin. for example : if voltage leve l of pin1 is high, pin14 is high ? pin description S3056
ksd-i7a004-001 4 sept., 2010 rev. 01 parameter symbol limits unit supply voltage v cc1 /v cc2 13.5 v power dissipation p d 1.7 w operate temperature range t opr -35 ~ +85 storage temperature range t stg -55 ~ +150 [ pd ] when mounted on a 70 mm70mm1.6mm glass epoxy board. reduced by 13.6mw for each increase in t a of 1 [ t stg ] should not exceed pd or soa and t j =150 values parameter symbol limits unit v cc1 4.3 ~ 13.2 v power supply voltage v cc2 4.3 ~ v cc1 v ? absolute maximum ratings ( ta = 25 ) ? guaranteed operating conditions ( ta = 25 ) ? 70mm70mm1.6mm glass epoxy board . ? de-rating is done at 13.6mw/ for operating above t a =25 ? power dissipation curve [ pd ] S3056
ksd-i7a004-001 5 sept., 2010 rev. 01 ( unless otherwise specified ta=25 , vcc1=12v, vcc2=5v, bias=2.5v, rl=8 ? /12 ? /20 ? /45 ? ) specification no characteristics symbol condition min. typ. max. unit 1 quiescent current iqc - 30 - ma 2 voltage for mute on vston 0 - 0.5 v 3 voltage for mute off vstoff 2 - 5 v < actuator driver: focus, tracking > 4 output offset voltage voo -50 - 50 mv 5 maximum output voltage vom @12 ? load 3.6 4 - v 6 voltage gain gv vin=bias+0.2vpp ac @1khz 21.5 23.5 25.5 db < sled motor driver > 7 output offset voltage voosl -100 - 100 mv 8 maximum output voltage vomsl @20 ? load 7.5 9.0 - v 9 voltage gain gvsl vin=bias+0.2vpp ac @1khz 18.0 20.0 22.0 db < spindle motor driver > 10 output offset voltage voold -50 - 50 mv 11 maximum output voltage vomld @8 ? load - 3.5 - v 12 voltage gain gvld vin=bias+0.2vpp ac @1khz 13.5 15.5 17.5 db < tray motor driver > 13 output saturation voltage1 vsat1 upper + lower saturation il=200ma 0.7 1.1 1.5 v 14 output saturation voltage between f&r vsat1 output saturation voltage1 between fwd and rev - - 0.1 v 15 output saturation voltage2 vsat2 upper + lower saturation il=200ma 1 1.55 2.2 v 16 output adjustable gain on "h" side voltage vvtrh vctl=2v 7.4 9.2 11 db < tray motor driver input logic > 17 high level input voltage vih 1.5 - vcc v 18 low level input voltage vil -0.3 - 0.5 v 19 high level input current iih vfwd=vrev=5v - 180.0 270.0 ua < comparator > 20 high level output voltage voh vcc1=vcom=5v opn=2v, opp=3v, rl=4.7k - - vcc v 21 low level output voltage vol vcc1=vcom=5v opn=2v, opp=1v, rl=4.7k - - 0.5 mv isink1 vcc1=vcom=5v opn=2v, opp=1v, rl=4.7k 0.80 1.00 - ma 22 output sink current isink2 vcc1=vcom=5v opn=2v, opp=1v 25.00 35.00 - ma ? electrical characteristics S3056
ksd-i7a004-001 6 sept., 2010 rev. 01 application information 1. thermal shut down circuit the built-in thermal shutdown circuit mutes the output current when the chip temperature reaches 175 (typ.). the hysteresis is set to 25 (typ.) by ihys, so the circuit will start up again wh en the chip temperature falling to 150 (typ.) 2. comparator circuit -. it can be used genera l comparators or op-amps -. it needs to attach an external ci rcuit as user?s application circuits. pull up resistor opout opi- vcc internal circuit external circuit + - opi+ reg. bandgap volta g e [ 1.25v ] focus, tracking, tray, spindle, sled , con. curren t r1 r2 r3 r4 ihys S3056
ksd-i7a004-001 7 sept., 2010 rev. 01 3. bias & mute circuit bias pin (pin 27) should be pulled up to more than 1.2v. in case the bias pin?s voltage is pulled down below 1.2v (typ.), the output current is mute d, also mute pin is same as bias pin. [except tray, regulator, comparator, those are only controlled by vcc1. ] focus, tracking, sled s p indle con. current bias r1 r2 r3 r4 mute S3056
ksd-i7a004-001 8 sept., 2010 rev. 01 4. btl driver circuits [focus, tracking, sled, spindle] btl driver circuits are composed of vi-conve rter, level shifter and output power amp. vi-converter converts voltage of vin into current [iconv ] iconv = (vin ? bias ) / r1[10k ] [ closed loop voltage gain calculation ] va(+) = (r2 iconv ) + pref va(-) = (-r5 iconv) + pref vo(+) = va(+) (1 + r4/r3 ) vo(-) = va(-) ( 1 + r7/r6 ) [ * r2 = r5 , r3 = r6, r4 = r7 * ] focus, tracking closed loop voltage gain [ r2 = 25k ? , r3 = 10k ? , r4 = 20k ? ] gain = 20 log [{ vo(+) - vo(-) } / (vin - bias) ] = 20 log [{ va(+) ( 1 + r3/r4 ) - va(-) ( 1 + r6/r7 ) } / ( vin ? bias ) ] = 20 log [{(r2 iconv ) + pref } ( 1 + r4/r3 )]? [{(-r5 iconv) + pref } ( 1 + r7/r6 )] (vin ? bias ) = 20 log [2(25k/10k){1+(20k/10k)} ] = 23.5 [db] sled closed loop voltage gain [r2 = 25k ? , r3 = 10k ? , r4 = 10k ? ] gain = 20 log [2 (25k/10k){1+(10k/10k)} ] = 20 [db] spindle closed loop voltage gain [r2 = 15k ? , r3 = 10k ? , r4 = 10k ? ] gain = 20 log [2 (25k/10k){1+(10k/10k)} ] = 15.5 [db] vi-converter level shift iconv iconv(+) iconv(-) va ( + ) va(-) pref r1 r2 r3 r4 r5 r6 r7 vo(+) pamp1 vo(-) pamp2 vin bias + - - + - + - + S3056
ksd-i7a004-001 9 sept., 2010 rev. 01 5. tray driver logic input fwd [pin6] rev [pin7] votr+ [pin10] votr- [pin9] function l l open open open mode l h l h reverse mode h l h l forward mode h h l l brake mode input circuit of pin6 [fwd] and pi n7 [rev] is designed to avoid si multaneous activation of upper and lower output power tr. however, in order to improve reliability, apply motor forward/reverse input once through open mode. we recommend that the ti me period of open state is longer than 10msec. ?h? side output voltage on output voltage [vol+, vol-] varies depending on output control terminal for tray. [pin21]?h? side output vol tage is set three times (9.2db t yp.) vtcl [pin21], and ?l? side output voltage is equal to output saturation voltage. vctl fwd rev votr(+) votr(-) r1 r2 - + speed control switching logic driver 1 driver 2 r3 r4 r5 r6 S3056
ksd-i7a004-001 10 sept., 2010 rev. 01 characteristic diagrams fig.4 v om - v cc fig. 3 v om - v cc fig. 1 v cc - i qc fig. 2 temperature - i qc fig.6 op v in ? op v o fig. 5 v om - v cc S3056
ksd-i7a004-001 11 sept., 2010 rev. 01 ? testing circuit S3056
ksd-i7a004-001 12 sept., 2010 rev. 01 ? outline dimension s s s s o o p p h h - - 2 2 8 8 n n with heat-sink S3056
ksd-i7a004-001 13 sept., 2010 rev. 01 the auk corp. products are intended for the use as components in general electronic equipment (office and co mmunication equipment, m easuring equipment, home appliance, etc.). please make sure that you consult with us before you use these auk corp. products in equipments which require high quality and / or reliability, and in equipments which could have major impact to th e welfare of human life(atomi c energy control, airplane, spaceship, transportation, co mbustion control, all types of safety device, etc.). auk corp. cannot accept liability to any damage which may occur in case these auk corp. products were used in the mentioned equi pments without prior consultation with auk corp.. specifications mentioned in this publicati on are subject to change without notice. S3056

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