S3045

4CH BTL Motor Drive IC S3045 Semiconductor http:// www.auk.co.kr Description The S3045 is a four-channels BTL motor driver for driving the actuators and motors for products of DVD-P/R/RW. It embrace a two channels of current feed-back BTL drivers. those use current feed-back process to minimize the current phase shift from the load inductance of actuators It supports various applications with pb free and heat-sink package. Application SSOPH-28N With Heat-sink ◈ CD-ROM ◈ CD-RW ◈ DVD-PLAYER ◈ DVD-ROM ◈ DVD-RW ORDERING INFORMATION Features and Benefits Product S3045 Marking S3045 Package SSOPH-28N ▲ Marking Detail Information S3045(①) YYWW(②) ① Device Code ② Year & Week Code ◈ 2 Channel are current feedback motor driver for actuators ◈ 2 Channels are voltage-type BTL drivers for sled and loading motors. ◈ Separating power of SVcc and PVcc1,PVcc2 are to improve power efficiency. ◈ Built in Level shift circuit. ◈ Built in Thermal shut down circuit. ◈ Built in Standby mode. ◈ Dual Actuator drivers [ Current Feedback ] The current feedback technique can reduce the current phase shift caused By the load inductance of actuators ◈ Sled motor driver A general OP-AMP connected to the input terminal helps compute additions of differential inputs or signals. ◈ Loading motor driver Single input linear BTL driver. The output structure are two power OP-AMPS in bridge configuration. KSD-I7A001-002 1 SEPT., 2010 REV. 02 S3045 ◈ Internal Block Diagram & Pin Assignment VIN F C Thermal STANDShut down BY +- +- STBY 28 1 10k 20k C F C e rr 1 7.5k C F C e rr 2 -+ -+ BIA S 27 2 3 7.5k VIN S L + VIN T K 26 20k 10k C T K e rr 1 25 4 +- 7.5k VIN S L - C T K e rr 2 24 5 7.5k VOSL VIN L D 23 6 VNFFC ×2 ×2 SGND 22 7 SVCC SVcc 10k 10k PVCC2 21 PVCC1 PVcc1 PGND VOSL- SLED DRIVER VOSL+ VOFC- VOFC+ ACTUATOR DRIVER SVccPVcc2 PVcc1 KSD-I7A001-002 SEPT., 2010 REV. 02 -+ +- 8 25k VNFTK 20 9 10 11 12 13 14 15k PGND 19 18 17 16 ACTUATOR DRIVER LOADING DRIVER VOLD- VOLD+ VOTK- VOTK+ 15 2 S3045 ◈ 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 CFCerr1 CFCerr2 VINSL+ VINSLVOSL VNFFC SVCC PVcc1 PGND VOSLVOSL+ VOFCVOFC+ VOTK+ VOTKVOLD+ VOLDPGND VNFTK PVcc2 SGND VINLD CTKerr2 CTkerr1 VINTK BIAS STBY I/O I I I I I O PWR PWR O O O O O O O O I PWR I I I I I I Input for focus driver DESCRIPTION Connect with capacitor for error amplifier. Connect with capacitor for error amplifier. Op amp input (+) for the sled driver Op amp input (-) for the sled driver Op amp output for the sled driver Focus driver feedback pin Supply voltage for pre-driver block and power block of sled Supply voltage for power block of loading GND for power block Sled driver output (-) Sled driver output (+) Focus driver output (-) Focus driver output (+) Tracking driver output (+) Tracking driver output (-) Loading driver output (+) Loading driver output (-) GND for power block Feedback for tracking driver Supply voltage for power block of actuator GND for pre-driver block Input for loading driver Connect with capacitor for error amplifier. Connect with capacitor for error amplifier. Input for tracking driver Input for reference voltage Input for standby 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-I7A001-002 3 SEPT., 2010 REV. 02 S3045 ◈ Absolute Maximum Ratings ( Ta = 25℃ ) Parameter Supply Voltage Power Dissipation Operate Temperature Range Storage Temperature Range Symbol SVCC/PVCC Pd Topr Tstg Limits 15 1.7 -35 ~ +85 -55 ~ +150 Unit V W ℃ ℃ [ Note ] 1) When mounted on a 50mm×50mm×1mm PCB 2) Power dissipation reduces 20mW/℃ for using above Ta=25℃ 3) Do not exceed pd and SOA ◈ Guaranteed Operating Conditions ( Ta = 25℃ ) Parameter Power Supply Voltage Symbol SVCC PVCC1/ PVCC2 Limits 4.5 ~ 13.2 4.5 ~ SVCC Unit V V ◈ Power Dissipation Curve [ Pd ] ◈ 50mm×50mm×1mm PCB ◈ Power dissipation reduces 20mW/℃ for using above Ta=25℃ KSD-I7A001-002 4 SEPT., 2010 REV. 02 S3045 ◈ Electrical characteristics ( Unless otherwise specified Ta=25℃, SVcc=12V, PVcc1= PVcc2=5V, BIAS=2.5V, RL1=RL2=RL3=RL4=12Ω, RD=0.5Ω, CFC=CTK=100pF) NO 1 2 3 4 5 6 7 Characteristics Quiescent Current Standby Circuit Current Standby ON Voltage Standby OFF Voltage Output Offset Current Maximum Output Voltage Transmission Gain OP AMP Input Common Mode Voltage Range OP AMP Input Bias Current OP AMP Low Saturation Voltage Maximum Output Source Current Maximum Output Sink Current Output Offset Voltage Maximum Output Voltage Closed-loop Voltage Gain Output Offset Voltage Maximum Output Voltage Closed-loop Voltage Gain Gain Error by Polarity Symbol IQC IST VSTON VSTOFF IOO VOM Gm VIN=BIAS+0.1Vpp ac @1khz Condition MIN. 0 2.0 -15 3.6 1.3 Specification TYP. 15 4 1.5 MAX. 27 0.5 0.5 15 1.7 mA mA V V mA V dB Unit < Actuator Driver: Focus, Tracking > < Sled Motor Driver / Pre Op Amp > 8 9 10 11 12 VICM IBOP VOLOP ISO ISI 0.3 1 -0.3 30 0.1 0.5 11.0 300 0.3 V nA V mA mA < Sled Motor driver > 13 14 15 16 17 18 19 VOOFSL VOMSL GVSL VOOFLD VOMLD GVLD ΔGVLD VIN=BIAS+0.1Vpp ac @1khz VIN=BIAS+0.1Vpp ac @1khz VIN=BIAS+0.1Vpp ac @1khz SVCC=5V -100 7.5 18.0 -50 3.6 13.5 0 9.0 20.0 0 4.0 15.5 1 100 22.0 50 17.5 2 mV V dB mV V dB dB < Loading Motor Driver> KSD-I7A001-002 5 SEPT., 2010 REV. 02 S3045 Equivalent Circuits ▣ Signal Input Stage ▣ OP-AMP Input Stage BIAS VINSL+ 10K VINFC VINTK VINLD VINSL- ▣ Sense AMP Input Stage ▣ Error AMP Input Stage SVcc VNFFC VNFTK 10K 7.5K 7.5K 20K CFCerr1 CTKerr1 ▣ BIAS Input Stage ▣ Stand-by Input Stage All OFF Power Amp OFF 80K 50K Stand-By 50K BIAS 20K KSD-I7A001-002 6 SEPT., 2010 REV. 02 S3045 Application Information 1. Thermal Shut Down Circuit Actuators, Sled and Loading motor Bandgap Voltage [ 1.25V ] R2 R3 IHys R4 R1 The built-in thermal shutdown circuit mutes turn off 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 down to 150℃ (typ.) 2. Reference Input & Stand-by Function •Reference input [ BIAS PIN : PIN 27 ] The applied voltage at the reference input pin must be between 0.8V and 6.5V ( when SVcc=8.5V ) •Standby input [ PIN28 ] The following input conditions must be satisfied for the standby function Stand-by input voltage Below 0.5V [ or Open ] Above 2.0V OPERATION The stand-by function is activated so the bias block and power block are disabled Recover the normal operation KSD-I7A001-002 7 SEPT., 2010 REV. 02 S3045 3. Separation of Power Supply ■ SVCC SVCC supplies power to the sled motor driver and the signal logic part ( SVCC ≥ PVCC1/PVCC2 ) ■ PVCC1 PVCC1 is the power supply for the loading motor driver. The recommend operating voltage range is between 4.3V~13.2V ■ PVCC2 PVCC2 is the power supply for the actuators that include focus and tracking motor drivers The range is between 4.3V~13.2V 4. Current Feedback Channel [ Actuators ] Current feedback AMP 10K VIN + ref 7.5K 7.5K + 20K Power AMP Actuator + + Sensing resistor ×2 R C External • The reference voltage is supplied externally through pin 27. • The input OP-AMP output signal is amplified by (20K/10K) times and then fed to the current feedback amplifier. • The current feedback amplifier compares the output current sensed input and command input and then makes the controlled output to eliminate delay effect of the load. • The DC gain of current feedback amplifier and power amplifier is unity, which is 1 [A/V]. Users can change the gain by adding external resistor at the command input. KSD-I7A001-002 8 SEPT., 2010 REV. 02 S3045 5. Sled Driver Circuits [ with input OP AMP ] 25K + + ref Power AMP 10K - + M + - • The reference voltage is given externally through pin 27. • The input OP-AMP can be used for several purpose, for example low pass filter, differential input coordinator, gain scaler and so on. 6. Loading Driver Circuits [ BTL Motor Driver ] 15K Power AMP 10K + ref + M + - • The reference voltage is given externally through pin 27. • The input OP-AMP output signal is amplified by (15K/10K) times and then fed to the power Amplifier. The gain of power amplifier is 4; therefore, the total max gain of Loading driver is 6. • Users must check input command range to use max output voltage because the total gain is relatively smaller than other drivers. KSD-I7A001-002 9 SEPT., 2010 REV. 02 S3045 ` Characteristic Diagrams Fig. 1 VCC - IQC Fig. 2 Temperature - IQC Fig. 3 VOM - IO 1 Fig.4 VOM - IO 2 Fig. 5 VOM - IO 3 Fig.6 OP VIN – OP VO (Buffer) -+ OP IN OP OUT V ( ) KSD-I7A001-002 10 SEPT., 2010 REV. 02 S3045 ◈ Application Circuit PV CC2 S3045 S V CC PV CC 1 KSD-I7A001-002 11 SEPT., 2010 REV. 02 S3045 ◈ Testing Circuit 100uH 100pF PVCC2 VST VBIAS VIN2 28 27 26 25 RD 100uF - R L2 VO2 VIN4 24 23 22 21 20 19 18 R L4 VO4 A + + IO2 + 17 16 15 VOLD- VOLD+ VOTK- VOTK+ S3045 VOSL- VOSL+ VOFC- VOFC+ 1 2 3 4 5 6 7 8 9 10 11 - 12 + 13 14 VIN1 100pF VIN3 A ICC V VO3 R L3 VO1 RD VOP SVCC 100uF PVCC1 IO1 RL1 100uH KSD-I7A001-002 12 SEPT., 2010 REV. 02 S3045 ◈ Outline Dimension (Unit : mm) SSOPH-28N With Heat-sink ※ Recommend PCB solder land (Unit : mm) KSD-I7A001-002 13 SEPT., 2010 REV. 02 S3045 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-I7A001-002 14 SEPT., 2010 REV. 02