CMD4510 Motor Driver for Portable DVD Player with DC-DC Step Down Converter DESCRIPITION Outline Drawing The CMD4510 is a 4-channel BTL driver IC for driving the motors and actuators such as used in DVD player and consists of two DC-DC Step Down Converters. It is pretty fit for portable DVD player application. Package material is Pb Free for environmental protection. FEATURE z 4-channel BTL: 1) Two channels are voltage-type BTL drivers for actuators of tracking and focus. Two channels are voltage-type BTL driver for sled and spindle motors. It is also built-in two DC-DC converters. 2) Wide dynamic range for motor drive [3.6V (typ.) when Vcc= 5V, at RL= 20Ω¸ load]. z 2 DC-DC Step down converters: 1) Efficiency up to 85% 2) Operation from 4.5~16V 3) Typical frequency operation to 240KHz. 4) Over voltage protection built-in. 5) Over current protection built-in. z Common circuit 1) Level shift circuit built-in. 2) Thermal shut down circuit built-in. 3) Mute mode built-in for motor drive. EN1, EN2 mode control for two set of DC-DC step down converters. APPLICATIONS ● BTL driver for portable DVD player with DC-DC power management * All specs and applications shown above subject to change without prior notice. 1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN Email: [email protected] Tel:886-3-3214525 Http: www.ceramate.com.tw Page 1 of 7 Rev 1.0 Mar. 28, 2006 Fax:886-3-3521052 CMD4510 Motor Driver for Portable DVD Player with DC-DC Step Down Converter BLOCK DIAGRAM AND PIN CONFIGURATION PIN DESCRIPTION Pin No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 Pin Name EN2 CT2 COMP2 SW2 IPK2 PVcc1 PVcc2 VOFC+ VOFCVcc1 VINFC VINSL+ MGND VOSL+ VOSLMGND VOTK+ VOTKMGND Description Enable pin for buck converter 2 Timing capacitor input 2 Comparator inverting input 2 Switching output 2 Current sense 2 Vcc for step down converter 1 Vcc for step down converter 2 Focus driver output(+) Focus driver output(-) Vcc for power block of sled Input for focus driver Input for the sled driver Ground for motor driver Sled driver output(+) Sled driver output(-) Ground for motor driver Tracking driver output(+) Tracking driver output(-) Ground for motor driver Continue * All specs and applications shown above subject to change without prior notice. 1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN Email: [email protected] Tel:886-3-3214525 Http: www.ceramate.com.tw Page 2 of 7 Rev 1.0 Mar. 28, 2006 Fax:886-3-3521052 CMD4510 Motor Driver for Portable DVD Player with DC-DC Step Down Converter Pin No 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 Pin Name VOSP+ VOSPVINSP VINTK Vcc2 PGND PGND1 PGND2 IPK1 SW1 COMP1 CT1 EN1 MUTE BIAS Description Spindle driver output(+) Spindle driver output(-) Input for spindle driver Input for tracking driver Vcc for power block of spindle, tracking and focus Ground for analog ground Ground for step down converter 1 Ground for step down converter 2 Current sense 1 Switching output 1 Comparator inverting input 1 Timing capacitor input 1 Enable pin for buck converter 1 Input for mute control Input for reference voltage ABSOLUTE MAXIMUM RATINGS (Ta=25°C) Characteristic Symbol Value Unit Supply Voltage 1 for driver Vcc1 13.5 V Supply Voltage 2 for driver Vcc2 13.5 V Supply voltage for converter PVcc 17.6 V Pd 2.2* °C Operating Temperature range Topr -40~+85 °C Storage temperature range Tstg -55~+150** °C Power dissipation * Power dissipation reduces 17.6mW/°C for operation above Ta=25°C ** 70mm×70mm×1.6mm glass epoxy board. RECOMMENDED OPERATING CONDITIONS (Ta=25°C) Characteristic Symbol Value Unit Power supply voltage Vcc1 Vcc2 PVcc 4.3~13.2 4.3~Vcc1 4.5~16 V * All specs and applications shown above subject to change without prior notice. 1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN Email: [email protected] Tel:886-3-3214525 Http: www.ceramate.com.tw Page 3 of 7 Rev 1.0 Mar. 28, 2006 Fax:886-3-3521052 CMD4510 Motor Driver for Portable DVD Player with DC-DC Step Down Converter ELECTRICAL CHARACTERISTICS (Unless otherwise specified: Ta=25°C, Vcc1=5V, Vcc2=5V, PVcc=12V,BIAS=1.65V,RL=8Ω/10Ω/20Ω) Characteristics Symbol Quiescent current Icc Standby current 1 Istb1 Standby current 2 Test conditions Min Typ Max Unit 19 mA Mute=L,EN1=H,EN2=H 3 mA Istb2 Mute=H,EN1=L,EN2=L 15 mA Standby current 3 Istb3 Mute=L,EN1=L,EN2=L Voltage for mute ON Vston Voltage for mute OFF 40 52 60 μA 0 0.5 V Vstoff 2.0 5 V Voltage for EN low VENL 0 0.5 V Voltage for EN high VENH 2.0 5 V ±50 mV Actuator drivers Output offset voltage Voo Maximum output voltage Vom voltage gain Gv 3.4 @10Ω load VIN=BIAS+0.2Vpp @1KHz ac 21.5 23.5 V 25.5 dB ±100 mV Sled motor driver Output offset voltage Voofsl Maximum output voltage Vomsl Closed loop voltage gain Gvsl 3.6 @20Ω load VIN=BIAS+0.2Vpp @1KHz ac 18 20 V 22 dB ±50 mV Spindle motor driver Output offset voltage Voofld Maximum output voltage Vomax Voltage gain Gain error by polarity Gvld ΔGvld 3.2 @8Ω load VIN=BIAS+0.2Vpp @1KHz VIN=BIAS+0.2Vpp @1KHz V ac 13.5 15.5 17.5 dB ac 0 1 2 dB Step down converter Oscillator frequency Fosc Charge current Discharge current 240 KHz Ichg 24 μA Idischg 144 μA 200 mV 1.25 V Current limit sense voltage Vipk Comparator threshold voltage Vth Output source current Output sink current CT=68PF Rsc=0.1 Isource Vout=0V 180 mA Isink Vout=9V 120 mA * All specs and applications shown above subject to change without prior notice. 1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN Email: [email protected] Tel:886-3-3214525 Http: www.ceramate.com.tw Page 4 of 7 Rev 1.0 Mar. 28, 2006 Fax:886-3-3521052 CMD4510 Motor Driver for Portable DVD Player with DC-DC Step Down Converter POWER DISSIPATION CURVE: APPLICATION INFORMATION 1)The built-in thermal shutdown circuit mutes the output current of 4-channel BTL when the chip temperature reaches 175°C (typ.). The hysteresis is set to 25°C (typ.), so the circuit will start up again when the chip temperature falling to 150°C(typ.). 2) In case mute pin voltage is under 0.5V or NC, output current is muted (except two DC-DC converter). Mute pin voltage should be more than 2.0V for normal application. 3) In case EN pin voltage is under 0.5V or NC, the converter circuit will stop operation. EN pin voltage should be more than 2.0V for normal application. 4) Bias pin (pin 34) should be pulled up to more than 1.2V. In case the bias pin voltage is pulled down below 0.9V (typ.),the output current of 4-channel BTL is muted. 5) Heat dissipation fins are attached to the GND on the inside of the package. Make sure to connect them to the external GND. 6)DC-DC Step down converter: Please refer to application note. 7)Truth table of Mute,EN1,EN2. Truth table (Ο: active Mute EN1 H --H --L L ×:inactive EN2 --H L --:don’t care) Motor channel Ο --× DC-DC ctrl 1 -Ο -× DC-DC ctrl 2 --Ο × * All specs and applications shown above subject to change without prior notice. 1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN Email: [email protected] Tel:886-3-3214525 Http: www.ceramate.com.tw Page 5 of 7 Rev 1.0 Mar. 28, 2006 Fax:886-3-3521052 CMD4510 Motor Driver for Portable DVD Player with DC-DC Step Down Converter APPLICATION CIRCUIT * All specs and applications shown above subject to change without prior notice. 1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN Email: [email protected] Tel:886-3-3214525 Http: www.ceramate.com.tw Page 6 of 7 Rev 1.0 Mar. 28, 2006 Fax:886-3-3521052 CMD4510 Motor Driver for Portable DVD Player with DC-DC Step Down Converter OUTLINE DRAWING * All specs and applications shown above subject to change without prior notice. 1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN Email: [email protected] Tel:886-3-3214525 Http: www.ceramate.com.tw Page 7 of 7 Rev 1.0 Mar. 28, 2006 Fax:886-3-3521052