5-CHANNEL MOTOR DRIVER FOR DVD PLAYER General Description. Features. Application

Transcription

1 General Description The is a five-channel BTL driver IC, in which four channels are voltage-type BTL drivers for tracking and focus actuators, sled and spindle motors, the other one channel is DC motor driver for tray which supports forward/reverse control. This IC also contains two general-purpose independent precise voltage comparators. The is available in standard HSOP-8 package. Features -Channel DC Motor BTL Driver -Channel Forward/Reverse Control DC Motor BTL Driver Two Built-in Comparators Built-in Level Shift Circuit Built-in Mute Mode Built-in Thermal Shutdown Circuit Operating Voltage:.V to.v Application DVD Player Driver HSOP-8 Figure. Package Type of Sep. 005 Rev.. BCD Semiconductor Manufacturing Limited

2 Pin Configuration M Package HSOP-8 VINFC 8 MUTE OPIN- 7 BIAS OPIN+ 6 VINTK VINSL 5 OPIN+ OPOUT 5 OPIN- FWD 6 VINSP REV 7 GND (PGND) (PGND) V CC 8 VCTL VOTR- 9 0 OPOUT VOTR+ 0 9 V CC VOSL+ 8 VOSP- VOSL- 7 VOSP+ VOFC- 6 VOTK- VOFC+ 5 VOTK+ Figure. Pin Configuration of (Top View) Sep. 005 Rev.. BCD Semiconductor Manufacturing Limited

3 Pin Description (Note ) Pin Number Pin Name Function VINFC Input for focus driver OPIN- Comparator input (-) OPIN+ Comparator input (+) VINSL Input for the sled driver 5 OPOUT Comparator output 6 FWD Tray driver forward input 7 REV Tray driver reverse input 8 V CC V CC for pre-driver block and power block of sled and tray 9 VOTR- Tray driver output (-) 0 VOTR+ Tray driver output (+) VOSL+ Sled driver output (+) VOSL- Sled driver output (-) VOFC- Focus driver output (-) VOFC+ Focus driver output (+) 5 VOTK+ Tracking driver output (+) 6 VOTK- Tracking driver output (-) 7 VOSP+ Spindle driver output (+) 8 VOSP- Spindle driver output (-) 9 V CC V CC for power block of spindle, tracking and focus 0 OPOUT Comparator output VCTL Speed control input of tray driver GND Ground VINSP Input for spindle driver OPIN- Comparator input (-) 5 OPIN+ Comparator input (+) 6 VINTK Input for tracking driver 7 BIAS Input for reference voltage 8 MUTE Input for mute control Note : Symbols of + and - (output of drivers) mean polarity with respect to input pin. (For example, if voltage of pin is high, pin is high and pin is low.) Sep. 005 Rev.. BCD Semiconductor Manufacturing Limited

4 Functional Block Diagram VINFC OPIN- 7K.5K THERMAL SHUT DOWN MUTE 8 7 MUTE BIAS OPIN+ VINSL.5k 7k 6 5 VINTK OPIN+ OPOUT FWD 5 6 7K OPIN- VINSP REV 7 GND.5K PGND 7K PGND V CC 8 V CC Pre-DRV VCTL VOTR- VOTR+ 9 0 TRAY DRIVER 5.5K V CC 0 9 OPOUT V CC VOSL+ VOSL- SLED DRIVER (X) SPINDLE DRIVER (X) 8 7 VOSP- VOSP+ VOFC- VOFC+ 6 ACTUATOR DRIVER (6X) ACTUATOR DRIVER (6X) 5 VOTK- VOTK+ V CC V CC V CC Figure. Functional Block Diagram of Sep. 005 Rev.. BCD Semiconductor Manufacturing Limited

5 Ordering Information - Circuit Type Package M8: HSOP-8 E: Lead Free Blank: Tin Lead Package Temperature Range Part Number Marking ID Tin Lead Lead Free Tin Lead Lead Free Packing Type HSOP-8 0 to 70 M8 M8-E M8 M8-E Tube BCD Semiconductor's Pb-free products, as designated with "E" suffix in the part number, are RoHS compliant. Absolute Maximum Ratings (T A =5 o C) (Note ) Parameter Symbol Value Unit Supply Voltage V CC,.5 V Power Dissipation P D.7 (Note, ) W Storage Temperature T STG -55 to 50 o C ESD (Human Body Model) ESD 000 V ESD (Machine Model) ESD 00 V Note : 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 : a. When mounted on a 70mmx70mmx.6mm glass epoxy board. b. Reduced by.6mw for each increase in T A of o C over 5 o C. Note : Do not exceed P D and SOA and T J =50 o C values. Recommended Operating Conditions (T A =5 o C) Parameter Symbol Min Max Unit Supply Voltage V CC.. V V CC. to V CC V Operating Temperature T A 0 70 o C Sep. 005 Rev.. BCD Semiconductor Manufacturing Limited 5

6 Electrical Characteristics (T A =5 o C, V CC =V CC =5V, V BIAS =.5V, C VCC =C VCC =0.µF, unless otherwise specified.) Parameter Symbol Conditions Min Typ Max Unit Quiescent Current I QC No load 0 ma Mute ON Voltage V STON V Mute OFF Voltage V STOFF.0 V CC V Focus Driver Output Offset Voltage V OOFFC mv Maximum Output Voltage V OMFC at 0Ω load.. V Closed-Loop Voltage Gain G VFC V IN =V BIAS ± 0.V.5 db Tracking Driver Output Offset Voltage V OOFTK mv Maximum Output Voltage V OMTK at 0Ω load.. V Closed-Loop Voltage Gain G VTK V IN =V BIAS ± 0.V.5 db Spindle Motor Driver Output Offset Voltage V OOFSP mv Maximum Output Voltage V OMSP at 8Ω load.. V Closed-Loop Voltage Gain G VSP V IN =V BIAS ± 0.V db Gain Error by Polarity G VSP V IN =V BIAS ± 0.V 0 db Sled Motor Driver Output Offset Voltage V OOFSL mv Maximum Output Voltage V OMSL at 8Ω load.. V Closed-Loop Voltage Gain G VSL V IN =V BIAS ± 0.V db Tray Motor Driver Output Saturation Voltage V SATTR Upper + Lower saturation, I L =00mA..6 V Sep. 005 Rev.. BCD Semiconductor Manufacturing Limited 6

7 Electrical Characteristics (Continued) Parameter Symbol Conditions Min Typ Max Unit Output Saturation Voltage between FWD and REV V SATTR Output Saturation Voltage between FWD and REV 0. V Output Saturation Voltage V SATTR Upper + Lower saturation, I L =500mA..5 V Output Adjustable Gain on "H" Side Voltage G VTRH "H" side output for input (VCTL=V) db Tray Motor Driver Input Logic High Level Input Voltage V IH.0 V CC V Low Level Input Voltage V IL V High Level Input Current I IH V FWD =V REV =5V µa Comparator Input Offset Voltage V IO mv Input Common-Mode Voltage Range V CM 0 V CC.5 V Voltage Gain G V R L 5kΩ 80 db Output Sink Current I SINK V OUT <.5V 6.0 ma Saturation Voltage V SAT I SINK ma mv Sep. 005 Rev.. BCD Semiconductor Manufacturing Limited 7

8 Test Circuit V8 V 8 7 V7 V V6 V 6 V5 V V V5 5 5 V V 6 V6 7 V7 CVCC V 8 V8 9 0 V V0 5 RL5 0 9 V9 8 CVCC 8 RL RL RL RL 0 5 Figure. Test Circuit of Sep. 005 Rev.. BCD Semiconductor Manufacturing Limited 8

9 Typical Performance Characteristics Output Voltage: V O V CC =V CC =5V V BIAS =.5V R L =0Ω Output Voltage: V O V CC =V CC =5V V BIAS =.5V R L =0Ω Input Voltage: V IN Input Voltage: V IN Figure 5. Focus Driver Characteristics Figure 6. Tracking Driver Characteristics Output Voltage: V O V CC =V CC =5V V BIAS =.5V R L =8Ω Output Voltage: V O V CC =V CC =5V V BIAS =.5V R L =8Ω Input Voltage: V IN Input Voltage: V IN Figure 7. Sled Driver Characteristics Figure 8. Spindle Driver Characteristics Sep. 005 Rev.. BCD Semiconductor Manufacturing Limited 9

10 Typical Performance Characteristics (Continued).0.6 Power Dissipation: P D (W) Ambient Temperature: T A ( O C) Figure 9. Power Dissipation Curve (Note ) Sep. 005 Rev.. BCD Semiconductor Manufacturing Limited 0

11 Typical Application SERVO µ-com SPIN+ SPIN- SERVO SLED FOCUS TRACKING VREF REV FWD Tray Voltage Control MUTE SPINDLE 5V M TRACKING COIL SPIN- SPIN+ SERVO 5V M M FOCUS COIL Figure 0. Typical Application of in DVD Player Sep. 005 Rev.. BCD Semiconductor Manufacturing Limited

12 Application Information. The built-in thermal shutdown circuit mutes the output current when the chip temperature reaches 75 o C (Typ). The hysteresis is set to 5 o C (Typ), so the circuit will start up again when the chip temperature falls to 50 o C (Typ). 6. Tray driver logic input: FWD (pin6) REV (pin7) VOTR+ (pin0) VOTR- (pin9) L L OPEN OPEN Function Open mode. In case mute pin voltage is under 0.5V or this pin is not connected, output current is muted (except for tray motor driver). Mute pin voltage should be more than.0v for normal application.. Bias pin (pin 7) should be pulled up to more than.v. In case the bias pin voltage is pulled down below 0.9V (Typ), the output current is muted.. Insert the bypass capacitor (about 0.µF) between V CC pin and GND pin as close as possible to this chip. 5. Heat dissipation fins are attached to the GND on the inside of the package. Make sure to connect them to the external GND. L H L H H L H L H H L L Reverse mode Forward mode Brake mode Input circuit of pins 6 and 7 is designed to avoid simultaneous activation of upper and lower output tray; however, in order to improve reliability, apply motor forward/reverse input once through open mode. We recommend time period for open longer than 0msec. "H" side output voltage on output pins (VOTR+ or VOTR-) varies depending on output control terminal for tray (pin ). "H" side output voltage is set to three times (9.dB Typ) the voltage of VCTL (pin ). And, "L" side output voltage is equal to output saturation voltage. Sep. 005 Rev.. BCD Semiconductor Manufacturing Limited

13 Mechanical Dimensions HSOP-8 Unit: mm(inch) 7.890(0.70) 0.0(0.008) 8.90(0.76) 0.60(0.0) 0.000(0.9) 0.650(0.9) 0.00(0.06).70(0.050) 7.00(0.9) 7.600(0.00) 0 o 8 o 5.050(0.99) 5.50(0.07) 0.800(0.0)TYP 0.0(0.009) 0.70(0.09) 0.00(0.00) 0.00(0.0).80(0.086).0(0.09).80(0.090).60(0.0) Sep. 005 Rev.. BCD Semiconductor Manufacturing Limited

14 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 - Wafer Fab Shanghai SIM-BCD Semiconductor Manufacturing Limited 800, Yi Shan Road, Shanghai 00, China Tel: , Fax: BCD Semiconductor Manufacturing Limited - IC Design Group Advanced Analog Circuits (Shanghai) Corporation 8F, Zone B, 900, Yi Shan Road, Shanghai 00, China Tel: , Fax: REGIONAL SALES OFFICE Shenzhen Office Shanghai SIM-BCD Semiconductor Manufacturing Co., Ltd. Shenzhen Office Advanced Analog Circuits (Shanghai) Corporation Shenzhen Office 7B, Tower C, 070, Middle Shen Nan Road, Shenzhen 580, China Tel: , Fax: Taiwan Office BCD Semiconductor (Taiwan) Company Limited F, 98-, Rui Guang Road, Nei-Hu District, Taipei, Taiwan Tel: , Fax: USA Office BCD Semiconductor Corporation 70 De La Cruz Blvd., Suite 05, Santa Clara, CA 9505-, U.S.A Tel: , Fax: