4CH BTL Motor Drive IC Semiconductor http:// www.auk.co.kr S3045 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 ◈ CD-ROM ◈ CD-RW ◈ DVD-PLAYER ◈ DVD-ROM ◈ DVD-RW SSOPH-28N With Heat-sink ORDERING INFORMATION Features and Benefits Product Marking Package S3045 S3045 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 SEPT., 2010 REV. 02 1 S3045 ◈ Internal Block Diagram & Pin Assignment +- 20k - + - + 20k 10k 1 r r e K T C 4 + - 25 + L S N I V 7.5k K T N I V 3 26 2 r r e C F C 7.5k S A I B 2 27 1 r r e C F C 7.5k Y B T S 1 10k 28 C F N I V +- Thermal STANDShut down BY 2 r r e K T C 5 24 L S N I V 7.5k D L N I V 6 23 L S O V 22 D N G S C F F N V ×2 7 ×2 10k 10k + - 9 15k K T O V 13 16 C F O V + K T O V 15 14 + C F O V ACTUATOR DRIVER + D L O V 17 12 + L S O V ACTUATOR DRIVER D L O V 18 11 L S O V LOADING DRIVER D N G P 19 10 D N G P SLED DRIVER K T F N V - + 25k 20 1 C C V P PVcc1 2 C C V P 8 21 C C V S SVcc SVccPVcc2 PVcc1 KSD-I7A001-002 SEPT., 2010 REV. 02 2 S3045 ◈ Pin Description NO SYMBOL I/O DESCRIPTION 1 VINFC I Input for focus driver 2 CFCerr1 I Connect with capacitor for error amplifier. 3 CFCerr2 I Connect with capacitor for error amplifier. 4 VINSL+ I Op amp input (+) for the sled driver 5 VINSL- I Op amp input (-) for the sled driver 6 VOSL O Op amp output for the sled driver 7 VNFFC - Focus driver feedback pin 8 SVCC PWR Supply voltage for pre-driver block and power block of sled 9 PVcc1 PWR Supply voltage for power block of loading 10 PGND - GND for power block 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 Loading driver output (+) 18 VOLD- O Loading driver output (-) 19 PGND - GND for power block 20 VNFTK I Feedback for tracking driver 21 PVcc2 PWR 22 SGND - GND for pre-driver block 23 VINLD I Input for loading driver 24 CTKerr2 I Connect with capacitor for error amplifier. 25 CTkerr1 I Connect with capacitor for error amplifier. 26 VINTK I Input for tracking driver 27 BIAS I Input for reference voltage 28 STBY I Input for standby control Supply voltage for power block of actuator 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 SEPT., 2010 REV. 02 3 S3045 ◈ Absolute Maximum Ratings ( Ta = 25℃ ) Parameter Symbol Limits Unit Supply Voltage SVCC/PVCC 15 V Power Dissipation Pd 1.7 W Operate Temperature Range Topr -35 ~ +85 ℃ Storage Temperature Range Tstg -55 ~ +150 ℃ [ 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 Limits Unit SVCC 4.5 ~ 13.2 V PVCC1/ PVCC2 4.5 ~ SVCC V ◈ Power Dissipation Curve [ Pd ] ◈ 50mm×50mm×1mm PCB ◈ Power dissipation reduces 20mW/℃ for using above Ta=25℃ KSD-I7A001-002 SEPT., 2010 REV. 02 4 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 Characteristics Symbol Specification Condition Unit MIN. TYP. MAX. 1 Quiescent Current IQC - 15 27 mA 2 Standby Circuit Current IST - - 0.5 mA 3 Standby ON Voltage VSTON 0 - 0.5 V 4 Standby OFF Voltage VSTOFF 2.0 - - V < Actuator Driver: Focus, Tracking > 5 Output Offset Current IOO -15 - 15 mA 6 Maximum Output Voltage VOM 3.6 4 - V 7 Transmission Gain Gm 1.3 1.5 1.7 dB -0.3 - 11.0 V 30 300 nA VIN=BIAS+0.1Vpp ac @1khz < Sled Motor Driver / Pre Op Amp > 8 9 10 11 12 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 VICM IBOP VOLOP - 0.1 0.3 V ISO 0.3 0.5 - mA ISI 1 - - mA -100 - 100 mV 7.5 9.0 - V 18.0 20.0 22.0 dB < Sled Motor driver > 13 Output Offset Voltage VOOFSL 14 Maximum Output Voltage VOMSL 15 Closed-loop Voltage Gain GVSL SVCC=5V VIN=BIAS+0.1Vpp ac @1khz < Loading Motor Driver> 16 Output Offset Voltage VOOFLD -50 0 50 mV 17 Maximum Output Voltage VOMLD 3.6 4.0 - V 18 Closed-loop Voltage Gain GVLD VIN=BIAS+0.1Vpp ac @1khz 13.5 15.5 17.5 dB 19 Gain Error by Polarity ΔGVLD VIN=BIAS+0.1Vpp ac @1khz 0 1 2 dB KSD-I7A001-002 SEPT., 2010 REV. 02 5 S3045 Equivalent Circuits ▣ Signal Input Stage ▣ OP-AMP Input Stage BIAS VINSL+ 10K VINFC VINSL- VINTK VINLD ▣ Error AMP Input Stage ▣ Sense AMP Input Stage SVcc VNFFC VNFTK 7.5K CFCerr1 10K 7.5K CTKerr1 20K ▣ BIAS Input Stage ▣ Stand-by Input Stage All OFF BIAS Power Amp 20K Stand-By OFF 50K 80K KSD-I7A001-002 SEPT., 2010 REV. 02 50K 6 S3045 Application Information 1. Thermal Shut Down Circuit Actuators, Sled and Loading motor Bandgap Voltage [ 1.25V ] R2 R3 IHys R1 R4 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 OPERATION Below 0.5V [ or Open ] The stand-by function is activated so the bias block and power block are disabled Above 2.0V Recover the normal operation KSD-I7A001-002 SEPT., 2010 REV. 02 7 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 Power AMP 20K 10K VIN Actuator + 7.5K + + - + - ref Sensing resistor 7.5K ×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 SEPT., 2010 REV. 02 8 S3045 5. Sled Driver Circuits [ with input OP AMP ] Power AMP 25K - + 10K - + M + + - ref • 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 + - M + + - ref • 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 SEPT., 2010 REV. 02 9 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) T U O P O - + N I P O V ( KSD-I7A001-002 SEPT., 2010 REV. 02 ) 10 S3045 ◈ Application Circuit PV CC2 S3045 SV CC PV CC 1 KSD-I7A001-002 SEPT., 2010 REV. 02 11 S3045 ◈ Testing Circuit 100uH RD 100pF PVCC2 VST VBIAS VIN2 R L4 VO4 100uF VIN4 - 28 27 26 25 24 23 22 21 20 19 18 R L2 A + + - 17 16 VO2 IO2 + 15 VOLD- VOLD+ VOTK- VOTK+ S3045 VOSL- VOSL+ VOFC- VOFC+ 2 3 5 4 6 8 7 9 10 11 - VIN3 VIN1 100pF A ICC V VOP SVCC 100uF VO3 12 + 1 13 14 VO1 PVCC1 R L3 RD IO1 RL1 100uH KSD-I7A001-002 SEPT., 2010 REV. 02 12 S3045 ◈ Outline Dimension (Unit : mm) SSOPH-28N With Heat-sink ※ Recommend PCB solder land (Unit : mm) KSD-I7A001-002 SEPT., 2010 REV. 02 13 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 SEPT., 2010 REV. 02 14