Data Sheet 4-CHANNEL MOTOR DRIVER FOR DVD PLAYER General Description Features The AM5954A is a four-channel BTL driver IC for driving the motors and actuators in products for DVDplayer drivers. Two of the channels use current feedback to minimize the current phase shift caused by the influence of load inductance. This IC is an improved version of AZ5954. · · · The AM5954A is available in HSOP-28 Package. · AM5954A Level Shift Circuit On Chip Internal Standby Mode Built-in Thermal Shutdown Circuit Applications DVD Player HSOP-28 Figure 1. Package Type of AM5954A Mar. 2007 Rev. 1. 4 BCD Semiconductor Manufacturing Limited 1 Data Sheet 4-CHANNEL MOTOR DRIVER FOR DVD PLAYER AM5954A Pin Configuration M28 Package (HSOP-28) VINFC 1 28 STBY CFCerr1 2 27 BIAS CFCerr2 3 26 VINTK VINSL+ 4 25 CTKerr1 VINSL- 5 24 CTKerr2 VOSL 6 23 VINLD VNFFC 7 22 GND FIN (GND) FIN (GND) VCC 8 21 PVCC2 PVCC1 9 20 VNFTK PGND 10 19 PGND VOSL- 11 18 VOLD- VOSL+ 12 17 VOLD+ VOFC- 13 16 VOTK- VOFC+ 14 15 VOTK+ Figure 2. Pin Configuration of AM5954A (Top View) Mar. 2007 Rev. 1. 4 BCD Semiconductor Manufacturing Limited 2 Data Sheet 4-CHANNEL MOTOR DRIVER FOR DVD PLAYER AM5954A Pin Description (Note 1) Pin Number Pin Name Function 1 VINFC 2 CFCerr1 For connection of capacitor for the error amp filter 3 CFCerr2 For connection of capacitor for the error amp filter 4 VINSL+ Op Amp input (+) for the sled driver 5 VINSL- Op Amp input (-) for the sled driver 6 VOSL Op Amp output for the sled driver 7 VNFFC 8 VCC 9 PVCC1 Power supply for loading channel 10 PGND Ground for sled driver block Focus driver input Focus driver feedback pin Supply voltage 11 VOSL- Sled driver output (-) 12 VOSL+ Sled driver output (+) 13 VOFC- Focus driver output (-) 14 VOFC+ Focus driver output (+) 15 VOTK+ Tracking driver output (+) 16 VOTK- Tracking driver output (-) 17 VOLD+ Loading driver output (+) 18 VOLD- Loading driver output (-) 19 PGND Ground for actuator driver block 20 VNFTK 21 PVCC2 Power supply voltage for actuator driver block 22 GND Ground 23 VINLD 24 CTKerr2 For connection of capacitor for the error amp filter 25 CTKerr1 For connection of capacitor for the error amp filter 26 VINTK 27 BIAS Bias input 28 STBY Standby control Tracking driver feedback pin Loading driver input Tracking driver input Note 1: The indicated polarities for the output pin are for when all inputs are (+). The output H bridge power supply pins are PVCC2 for the focus, tracking channel, PVCC1 for the loading channel, and VCC for the pre-block and sled channel. Always ensure that VCC ≥ PVCC. Mar. 2007 Rev. 1. 4 BCD Semiconductor Manufacturing Limited 3 Data Sheet 4-CHANNEL MOTOR DRIVER FOR DVD PLAYER AM5954A Functional Block Diagram THERMAL SHUT DOWN STANDBY 28 1 VINFC 10K STBY 20K 27 2 CFCerr1 CFCerr2 BIAS 7.5K 26 3 20k VINSL+ VINSL- 4 VINTK 10k 25 7.5k CTKerr1 7.5k 24 5 CTKerr2 7.5k VOSL VNFFC 23 6 VINLD 22 7 GND 2 2 10K 8 VCC 10K 21 VCC PVCC2 9 PVCC1 25K PVCC2 20 15k PVCC1 10 VNFTK 19 PGND PGND 11 18 VOSL- VOLD- 12 LOADING DRIVER SLED DRIVER 17 VOSL+ VOLD+ 16 13 VOFC- VOTK- 14 ACUATOR DRIVER ACTUATOR DRIVER VOFC+ 15 VOTK+ VCC PVCC2 PVCC1 Figure 3. Functional Block Diagram of AM5954A Mar. 2007 Rev. 1. 4 BCD Semiconductor Manufacturing Limited 4 Data Sheet 4-CHANNEL MOTOR DRIVER FOR DVD PLAYER AM5954A Ordering Information - AM5954A E1: Lead Free Blank: Tin Lead Circuit Type Package TR: Tape and Reel Blank: Tube M28: HSOP-28 Package Part Number Temperature Range HSOP-28 0 to 70oC Marking ID Tin Lead Lead Free AM5954AM28 AM5954AM28-E1 Tin Lead Packing Type Lead Free AM5954AM28 AM5954AM28-E1 AM5954AM28TR-E1 Tube AM5954AM28-E1 Tape & Reel BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant. Absolute Maximum Ratings (Note 2) Parameter Symbol Value Unit VCC, PVCC1/2 13.5 V Power Dissipation PD 1.7 (Note 3) W Operating Junction Temperature TJ 150 oC Storage Temperature Range TSTG -55 to 150 oC ESD (Human Body Model) ESD 2000 V ESD (Machine Model) ESD 200 V Supply Voltage Note 2: Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "Recommended Operating Conditions" is not implied. Exposure to "Absolute Maximum Ratings" for extended periods may affect device reliability. Note 3: The power dissipation is reduced by 13.6mW for each increase in temperature of 1oC over 25oC. Recommended Operating Conditions Parameter Supply Voltage Operating Temperature Symbol Min Max Unit VCC 4.0 13.2 V PVCC1 4.0 VCC V PVCC2 4.0 VCC V TA 0 70 oC Mar. 2007 Rev. 1. 4 BCD Semiconductor Manufacturing Limited 5 Data Sheet 4-CHANNEL MOTOR DRIVER FOR DVD PLAYER AM5954A Electrical Characteristics (TA=25oC, VCC=PVCC=12V, PVCC2=5V, VBIAS=2.5V, RL1=RL2=RL3= RL4=8Ω, RD=0.5Ω, CFC=CTK=100pF, unless otherwise specified.) Parameter Symbol Quiescent Current ΙQC Standby Current ΙST Test Conditions Min Standby-on Voltage VSTON All channels off 0 Standby-off Voltage VSTOFF All channels on 2.0 Typ Max Unit 18 27 mA 0.5 mA 0.5 V V Actuator Driver Output Offset Current IOO Maximum Output Amplitude VOM VIN=VBIAS±1.5V 3.6 3.8 gm VIN=VBIAS±0.2V 1.3 1.5 VBIAS=6V VCC=PVCC1=5V Transmission Gain -6 6 mA V 1.7 A/V -0.3 11.0 V -0.3 4.0 V Sled Motor Driver/Pre Op Amp Common Input Voltage Range VICM IIB 14 300 nA Output Low Level Voltage VOL 0.1 0.3 V Output Source Current ISO 0.3 Output Sink Current ISI 1 Input Bias Current 0.58 mA mA Sled Motor Driver Output Offset Voltage VOOFSL VCC=5V -100 Maximum Output Voltage VOMSL VIN=VBIAS±1.5V 7.5 9 Closed-loop Voltage Gain GVSL VIN=VBIAS±0.2V 18.0 20.0 100 mV V 22.0 dB 50 mV Loading Motor Driver Output Offset Voltage Maximum Output Voltage Closed-loop Voltage Gain Gain Error by Polarity VOOFLD -50 VIN=VBIAS±2.0V 7.5 9 V VOMLD VIN=VBIAS±1.5V VCC=PVCC1=5V 3.6 3.8 V GVLD VIN=VBIAS±0.2V 13.5 15.5 17.5 dB ∆GVLD VIN=VBIAS±0.2V 0 1 2 dB Mar. 2007 Rev. 1. 4 BCD Semiconductor Manufacturing Limited 6 Data Sheet 4-CHANNEL MOTOR DRIVER FOR DVD PLAYER AM5954A Test Circuit 100µH RL2 RD V2 100pF VST VBIAS 28 27 26 25 24 23 22 21 20 A IO2 + VIN4 VIN2 - RL4 100µF 16V 19 VO2 VO4 18 + + - 17 16 15 VOLD- VOLD+ VOTK- VOTK+ AM5954A VOSL- VOSL+ VOFC- VOFC+ 1 2 3 VIN1 4 5 6 7 8 9 10 11 12 - VIN3 A ICC V VOP 13 14 - + VO3 + VO1 + 100µF 16V 100pF A RL3 V1 IO1 - RD RL1 100µH Figure 4. Test Circuit of AM5954A Mar. 2007 Rev. 1. 4 BCD Semiconductor Manufacturing Limited 7 Data Sheet 4-CHANNEL MOTOR DRIVER FOR DVD PLAYER AM5954A Typical Performance Characteristics 4 VCC=PVCC1=12V 3 PVCC2=5V VCC=PVCC1=12V 12 PVCC2=5V BIAS=2.5V Output Voltage: VO (V) Output Voltage: VO (V) 5 2 1 0 -1 RL=4Ω+100µH -2 RL=8Ω+100µH -3 RL=12Ω+100µH -4 RL=20Ω+100µH 8 BIAS=2.5V 4 0 -4 RL=20Ω -8 RL=12Ω RL=8Ω -12 -5 -0.4 -0.2 0.0 0.2 -1.2 0.4 -0.8 -0.4 0.0 0.4 0.8 1.2 Input Voltage: VIN (V) Input Voltage: VIN (V) Figure 5. Driver I/O Characteristics (Focus and Tracking, Note 4) Figure 6. Driver I/O Characteristics (Sled, Note 4) 5 4 Output Voltage: VO (V) 3 Op Amp Output Voltage: OP OUT (V) VCC=PVCC=5V BIAS=2.5V 2 1 0 -1 RL=4Ω RL=8Ω -2 RL=12Ω -3 RL=20Ω VCC=5V 4 3 - 2 OP IN + OP OUT V 1 -4 0 -1.0 -0.5 0.0 0.5 1.0 0 1 2 3 4 5 Op Amp Input Voltage: OP IN (V) Input Voltage: VIN (V) Figure 8. Op Amp I/O Characteristics (Note 4) Figure 7. Driver I/O Characteristics (Loading, Note 4) Note 4: Input voltage herein is referenced to Bias pin voltage. Mar. 2007 Rev. 1. 4 BCD Semiconductor Manufacturing Limited 8 Data Sheet 4-CHANNEL MOTOR DRIVER FOR DVD PLAYER AM5954A Typical Performance Characteristics (Continued) 180 60 10K 10µ g Gain: g (dB) 2.5V V IN 20K 100µ 0 20 0 Phase: θ (deg) 90 40 -90 θ VCC=12V PVCC=5V -20 10k -180 100k 1M 10M Frequency: f (Hz) Figure 9. Op Amp Phase-Frequency, AmplitudeFrequency Characteristics 2.0 Power Dissipation (W) 1.6 1.2 0.8 0.4 0.0 0 50 100 150 O Ambient Temperature ( C) Figure 10. Power Dissipation Curve Mar. 2007 Rev. 1. 4 BCD Semiconductor Manufacturing Limited 9 Data Sheet 4-CHANNEL MOTOR DRIVER FOR DVD PLAYER AM5954A Typical Application µ-COM LOADING STANDBY VCENTER TRACKING FOCUS SLED DSP TRACKING COIL LOADING MOTOR 5V Rd M 28 27 26 25 24 23 22 21 20 19 18 17 16 15 9 10 11 12 13 14 AM5954A 1 2 3 4 5 6 7 8 5V or 12V M 5V or 12V SLED MOTOR Rd FOCUS COIL Figure 11. Typical Application of AM5954A in DVD Player Mar. 2007 Rev. 1. 4 BCD Semiconductor Manufacturing Limited 10 Data Sheet 4-CHANNEL MOTOR DRIVER FOR DVD PLAYER AM5954A Application Information 1. 2. 3. 4. 5. 6. Supplement: (Current-feedback driver) This IC has a built-in thermal shutdown circuit that mutes the output current when the chip temperature reachs 178oC (Typ). The hysteresis is set to 25oC (Typ), so the driver circuits start up again when the chip temperature falls to 153oC (Typ). The driver buffer is switched off when the supply voltage falls below 3.5V (Typ), and is switched back on when the voltage reaches 3.7V (Typ) again. In case standby pin voltage is under 0.5V or opened, quiescent current is muted. Standby pin voltage should be over 2.0V for normal application. BIAS pin (pin 27) should be pulled up more than 1.2V. In case bias pin voltage is pulled down under 0.9V (Typ), output current is muted. Insert the by-pass capacitor (approximately 0.1µF) between VCC-pin and GND-pin as near as possible to this IC. Heat dissipation fins are attached to the GND inside the package. Make sure to connect them to the external GND. The transmission gain (output current/input voltage) is given by: gm=1/(RD + RWIRE) (A/V) RWIRE is the total gold wire resistance inside the package (0.15Ω ± 0.05Ω ) (Typ). Mar. 2007 Rev. 1. 4 BCD Semiconductor Manufacturing Limited 11 Data Sheet 4-CHANNEL MOTOR DRIVER FOR DVD PLAYER AM5954A Mechanical Dimensions HSOP-28 Unit: mm(inch) 17.890(0.704) 18.190(0.716) 0.204(0.008) 0.360(0.014) 0.400(0.016) 1.270(0.050) 10.000(0.394) 10.650(0.419) 7.400(0.291) 7.600(0.300) 0o ~ 8 o 0.800(0.031) TYP 5.050(0.199) 5.250(0.207) 0.230(0.009) 0.470(0.019) 0.100(0.004) 0.300(0.012) 2.180(0.086) 2.330(0.092) 2.280(0.090) 2.630(0.104) Mar. 2007 Rev. 1. 4 BCD Semiconductor Manufacturing Limited 12 http://www.bcdsemi.com IMPORTANT NOTICE BCD Semiconductor Manufacturing Limited reserves the right to make changes without further notice to any products or specifications herein. BCD Semiconductor Manufacturing Limited does not assume any responsibility for use of any its products for any particular purpose, nor does BCD Semiconductor Manufacturing Limited assume any liability arising out of the application or use of any its products or circuits. BCD Semiconductor Manufacturing Limited does not convey any license under its patent rights or other rights nor the rights of others. MAIN SITE BCD Semiconductor Manufacturing Limited BCD Semiconductor Manufacturing Limited - Wafer Fab Shanghai SIM-BCD Semiconductor Manufacturing Limited 800, Yi Shan Road, Shanghai 200233, China Tel: +86-21-6485 1491, Fax: +86-21-5450 0008 - IC Design Group Advanced Analog Circuits (Shanghai) Corporation 8F, Zone B, 900, Yi Shan Road, Shanghai 200233, China Tel: +86-21-6495 9539, Fax: +86-21-6485 9673 REGIONAL SALES OFFICE Shenzhen Office Shanghai SIM-BCD Semiconductor Manufacturing Co., Ltd. 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