S3056

5CH BTL Motor Drive IC S3056 Semiconductor http:// www.auk.co.kr 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 precision voltage comparators for external application circuits even amplifying internal drivers. It supports various applications with pb free and heat-sink package. Application SSOPH-28N With Heat-sink ◈ CD-Player ◈ CD-ROM ◈ DVD-Player Features and Benefits ORDERING INFORMATION Product S3056 Marking S3056 Package SSOPH-28N ◈ 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 open collector output 2 comparators. ◈ Separating power of Vcc1 and Vcc2 is to improve power efficiency. ◈ Built in Level shift circuit. ▲ Marking Detail Information ◈ Built in Thermal shut down circuit. ◈ Built in Mute mode. S3056(①) YYWW(②) ① Device Code ② Year & Week Code ◈ 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. KSD-I7A004-001 SEPT., 2010 REV. 01 1 S3056 ◈ Internal Block Diagram & Pin Assignment KSD-I7A004-001 SEPT., 2010 REV. 01 2 S3056 ◈ Pin Description NO 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 SYMBOL VINFC OP1OP1+ VINSL OP1O FWD REV VCC1 VOTRVOTR+ VOSL+ VOSLVOFCVOFC+ VOTK+ VOTKVOLD+ VOLDVCC2 OP2O VCTL GND VINLD OP2OP2+ VINTK BIAS MUTE I/O I I I I O I I PWR O O O O O O O O O O PWR O I I I I I I Input for focus driver Comparator 1 input [-] Comparator 1 input [+] Input for sled driver Comparator 1 output DESCRIPTION Tray driver input signal for forward direction Tray driver input signal for reverse direction VCC for pre-drive block and power block of sled & tray Tray driver output (-) Tray driver output (+) Sled driver output (+) Sled driver output (-) Focus driver output (-) Focus driver output (+) Tracking driver output (+) Tracking driver output (-) Spindle driver output (+) Spindle driver output (-) VCC for power block of focus, tracking and spindle Comparator 2 output Speed control input of tray driver Ground Input for spindle driver Comparator 2 input [-] Comparator 2 input [+] Input for tracking driver Input for reference voltage Input for mute control Symbol of + and – [ output of drives ] means polarity to input pin. For example : if voltage level of pin1 is high, pin14 is high KSD-I7A004-001 SEPT., 2010 REV. 01 3 S3056 ◈ Absolute Maximum Ratings ( Ta = 25℃ ) Parameter Supply Voltage Power Dissipation Operate Temperature Range Storage Temperature Range Symbol VCC1/VCC2 Pd Topr Tstg Limits 13.5 1.7 -35 ~ +85 -55 ~ +150 Unit V W ℃ ℃ [ Pd ] When mounted on a 70mm×70mm×1.6mm glass epoxy board. Reduced by 13.6mW for each increase in Ta of 1℃ [ Tstg ] Should not exceed Pd or SOA and Tj=150℃ values ◈ Guaranteed Operating Conditions ( Ta = 25℃ ) Parameter Power Supply Voltage Symbol VCC1 VCC2 Limits 4.3 ~ 13.2 4.3 ~ VCC1 Unit V V ◈ Power Dissipation Curve [ Pd ] ◈ 70mm×70mm×1.6mm glass epoxy board . ◈ De-rating is done at 13.6mW/℃ for operating above Ta=25℃ KSD-I7A004-001 SEPT., 2010 REV. 01 4 S3056 ◈ Electrical characteristics ( Unless otherwise specified Ta=25℃, Vcc1=12V, Vcc2=5V, BIAS=2.5V, RL=8Ω/12Ω/20Ω/45Ω) NO 1 2 3 4 5 6 7 8 9 10 11 12 Characteristics Quiescent current Voltage for Mute on Voltage for Mute off Output Offset Voltage Maximum output Voltage Voltage Gain Output Offset Voltage Maximum output Voltage Voltage Gain Output Offset Voltage Maximum output Voltage Voltage Gain Symbol Iqc Vston Vstoff Voo Vom Gv Voosl Vomsl Gvsl Voold Vomld Gvld Condition MIN. 0 2 -50 3.6 21.5 -100 7.5 18.0 -50 13.5 Specification TYP. 30 4 23.5 9.0 20.0 3.5 15.5 MAX. 0.5 5 50 25.5 100 22.0 50 17.5 Unit mA V V mV V dB mV V dB mV V dB < Actuator Driver: Focus, Tracking > @12Ω Load VIN=BIAS+0.2Vpp ac @1khz < Sled Motor Driver > @20Ω Load VIN=BIAS+0.2Vpp ac @1khz < Spindle Motor driver > @8Ω Load VIN=BIAS+0.2Vpp ac @1khz Upper + Lower saturation IL=200mA Output saturation voltage1 between FWD and REV Upper + Lower saturation IL=200mA VCTL=2V < Tray Motor driver > 13 14 15 16 Output saturation Voltage1 Output saturation voltage between F&R Output saturation Voltage2 Output adjustable gain on "H" side voltage High level input voltage Low level input voltage High level input current Vsat1 △Vsat1 Vsat2 VvtrH 0.7 1 7.4 1.1 1.55 9.2 1.5 0.1 2.2 11 V V V dB < Tray Motor driver input logic > 17 18 19 VIH VIL IIH VFWD=VREV=5V Vcc1=Vcom=5V OPN=2V, OPP=3V, RL=4.7K Vcc1=Vcom=5V OPN=2V, OPP=1V, RL=4.7K Vcc1=Vcom=5V OPN=2V, OPP=1V, RL=4.7K Vcc1=Vcom=5V OPN=2V, OPP=1V 1.5 -0.3 180.0 Vcc 0.5 270.0 V V uA < Comparator > 20 21 22 High level output voltage Low level output voltage Output sink current Isink2 VOH VOL Isink1 0.80 25.00 1.00 35.00 Vcc 0.5 V mV mA mA KSD-I7A004-001 SEPT., 2010 REV. 01 5 S3056 Application Information 1. Thermal Shut Down Circuit Focus, Tracking, Tray, Spindle, Sled, Con. Current Reg. Bandgap Voltage [ 1.25V ] R2 R3 IHys R4 R1 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 when the chip temperature falling to 150℃ (typ.) 2. Comparator Circuit VCC OPI- OPI+ External Circuit Pull up Resistor OPOUT + - Internal Circuit -. It can be used general Comparators or OP-AMPs -. It needs to attach an external circuit as user’s application circuits. KSD-I7A004-001 SEPT., 2010 REV. 01 6 S3056 3. Bias & Mute Circuit Focus, Tracking, Sled Spindle Con. Current Bias Mute R1 R3 R2 R4 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 muted, also Mute pin is same as Bias pin. [Except Tray, Regulator, Comparator, those are only controlled by Vcc1. ] KSD-I7A004-001 SEPT., 2010 REV. 01 7 S3056 4. BTL Driver Circuits [Focus, Tracking, Sled, Spindle] R4 R3 Va(+) VI-Converter Iconv Vin R1 Bias Level Shift + Vo(+) PAMP1 + + R2 Iconv(+) Iconv(-) R5 Va(-) R6 + - Vo(-) PAMP2 - Pref R7 BTL Driver Circuits are composed of VI-Converter, Level Shifter and Output power AMP. VI-Converter converts voltage of Vin into current [Iconv ] Iconv = (Vin – Bias ) / R1[10KΩ] [ 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 = 25KΩ, R3 = 10KΩ, R4 = 20KΩ ] 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 = 25KΩ, R3 = 10KΩ, R4 = 10KΩ ] Gain = 20 log [2× (25K/10K)×{1+(10K/10K)} ] = 20 [dB] Spindle closed loop Voltage Gain [R2 = 15KΩ, R3 = 10KΩ, R4 = 10KΩ] Gain = 20 log [2× (25K/10K)×{1+(10K/10K)} ] = 15.5 [dB] KSD-I7A004-001 SEPT., 2010 REV. 01 8 S3056 5. Tray driver logic input Speed Control Driver 1 R2 R1 VCTL FWD R3 R5 REV Driver 2 + VOTR(+) VOTR(-) R4 R6 Switching Logic FWD [pin6] L L H H REV [pin7] L H L H VOTR+ [pin10] OPEN L H L VOTR- [pin9] OPEN H L L FUNCTION Open mode Reverse mode Forward mode Brake mode Input circuit of pin6 [FWD] and pin7 [REV] is designed to avoid simultaneous 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 time 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 voltage is set three times (9.2dB typ.) VTCL [pin21], and “L” side output voltage is equal to output saturation voltage. KSD-I7A004-001 SEPT., 2010 REV. 01 9 S3056 Characteristic Diagrams Fig. 1 VCC - IQC Fig. 2 Temperature - IQC Fig. 3 VOM - VCC Fig.4 VOM - VCC Ω Ω Fig. 5 VOM - VCC Fig.6 OP VIN – OP VO Ω KSD-I7A004-001 SEPT., 2010 REV. 01 10 S3056 ◈ Testing Circuit KSD-I7A004-001 SEPT., 2010 REV. 01 11 S3056 ◈ Outline Dimension SSOPH-28N With Heat-sink KSD-I7A004-001 SEPT., 2010 REV. 01 12 S3056 The AUK Corp. products are intended for the use as components in general electronic equipment (Office and communication equipment, measuring 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 the welfare of human life(atomic energy control, airplane, spaceship, transportation, combustion 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 equipments without prior consultation with AUK Corp.. Specifications mentioned in this publication are subject to change without notice. KSD-I7A004-001 SEPT., 2010 REV. 01 13