L6287 (R) POWER COMBO DRIVER DESCRIPTION The F-VHS Motor Driver COMBO IC includes a double three phase brushless motor driver plus a DC full bridge motor driver for VCR application. The package is SDIP42 (38+2+2 pin ground frame). The device is realized in BCD technology with power LDMOS output stages. The gate drive for high side stages is provided by an internal charge pump with two external capacitors. The first three phase motor driver is devoted to the DRUM motor control. The phase sequence update signal is provided initially by an external start-up signal (FSTART), whose frequency is internally divided by four, while, during normal operation, is provided by an optical tacho converter signal. This signal is used as clock and reset for the state machine. The regulation of the speed is externally provided by means of PWM signal generated by the P (DPWM), without external sensing resistor. The feedback to the P unit is given by a suitable open drain output signal (PUD) synchronized by the internal state machine. The second three phase motor driver is devoted to the CAPSTAN control. While the DRUM will always spin in a fixed direction, the CAPSTAN motor needs a more sophisticated logic to control the changes in spin direction. The motor position detection is carried out by means of three comparators for Hall effect sensors. The loop regulation for this motor is still provided by the P with the signals CPWM and CDIR. The LOADING motor section include a full bridge DC motor driver. The motor operations are directly set by the inputs LPWM, LDIR according to the truth table reported on the page 5. The device also includes a circuit for early thermal alarm, last thermal alarm and thermal shutdown with hysteresys. The output of this stage is an open drain, kept ON during normal operations. The THERM signal follows the inverted FSTART signal between early warning and last warning temperature, while remains in high impedance (OFF) after lastwarning temperature and during thermal shutdown. July 2003 SDIP42 ORDERING NUMBER: L6287 The STANDBY state of the device is imposed by THERMAL SHUTDOWN UNDERVOLTAGE ON VCC SUPPLY EXTERNAL SIGNAL FSTART; This state is imposed automatically after a defined time-out. The time-out is realized by sensing the falling edges of the FSTART signal: if no edges are recorded for a time interval greater than a certain time constant, the STANDBY condition is generated. The time constant is defined by the external capacitor CTO. In the STANDBY state the main functions (upper power stages, opto decoder, etc) of the device are turned off in order to minimize the power consumption. The device also implement a HEATER function. The HEATER transistor is OFF during thermal shutdown, undervoltage condition and during normal working mode. The HEATER transistor is driven ON when the external STANDBY condition is present according to the following table: FSTART HIGH LOW HEATER OFF ON During the ON condition, the specified heater Ron is not guaranteed if all the voltage supplies are not at their minimum nominal value. 1/9 This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice. L6287 ABSOLUTE MAXIMUM RATINGS Symbol VDD VDC VDL UPPER POWER VDS MAX LOWER POWER VDS MAX VCC VS Ip1 Ipd Ipc Vil Vih Vtherm Vheat Parameter Drum Supply Voltage Capstan Supply Voltage Loading Supply Voltage Motor Output to Ground Voltage Motor Output to Supply Voltage Logic Supply Voltage Special Supply Voltage Loading Motor Peak Current (Ton = 1s Duty Cycle = 2%) Drum Motor Peak Current (Ton = 1s Duty Cycle = 2%) Capstan Motor Peak Current (Ton = 1s Duty Cycle = 2%) Logic Input Low State Voltage Logic Input High StateVoltage Open Drain Maximum Voltage Open Drain Maximum Voltage Value 20 20 20 20 Unit V (**) V (**) V (**) V(***) 20 V (***) 7 7 1.6 1.4 1.8 -0.1 7 7 20 V V A A A V V V V (**) Value 48 Unit C/W 15 C/W (**) Not operative - STANDBY condition (***) Each motor driver PINS CONNECTION THERMAL DATA Symbol Rthj-amb Parameter Thermal Resistance Junction to Ambient R th j-pins Thermal Resistance Junction to Pin Note: Batwing pin. 2/9 L6287 BLOCK DIAGRAM CP1 = 0.01F CP2 = 0.1F 3/9 L6287 PIN DESCRIPTION VOLTAGE SUPPLIES (The power supply voltage VDD, VDC, VDL must be connected toghether externally) VDD VDC VDL VCC LGND Power supply voltage for drump motor Power supply voltage for capstan motor Power supply voltage for loading motor and charge pump Logic voltage supply Logic Ground GND R Capstan + drum power ground GND L Loading + Charge pump Power ground Analog voltage supply VS SGND Analog ground Note: The VCC and VS Power Supply must be together either at maximum or minimum value. DRUM MOTOR DOUT U Winding Output U DOUT V DOUT W Winding Output V DPWM PUD Winding Output W PWM logic pulse input. Control signal generated by P for dump motor current regulation. Logic output position feedback generated by the translator logic OD Optocoupler diode output OC OT External capacitor for tacho-converter integrator Input for optocoupler transistor OR Tacho-converter external resistor. This resistor defines the full-light current level of the tacho. CAPSTAN MOTOR Winding Output U COUT U COUT V COUT W CPWM CDIR H1+ H1H2+ H2H3+ H3- Winding Output V Winding Output W PWM logic pulse input. Control signal generated by P for current regulation. Motor Direction Logic Input Signal Hall sensor differential input Hall sensor differential input Hall sensor differential input LOADING MOTOR Winding Output A LOUT A LOUT B LPWM LDIR SERVICES HEATER VCP CP1 Open drain output for heater resistor Charge pump storage capacitor pin Bootstrap Capacitor pin CP2 THERM FSTART Bootstrap Capacitor pin Open drain thermal alarm output Start-up logic signal for drum motor CTO 4/9 Winding Output B PWM logic input. Direction logic input Time out capacitor output L6287 ELECTRICAL CHARACTERISTICS (Tj = 0 to125C; VCC = VS = 5V 5%; VDC = VDL = VDD = 10 to 18V; unless otherwise specified.) POWER SUPPLY Symbol (#)VDD (#)VDC (#)VDL VCC VS VCCth Parameter Drum Power Supply Voltage Test Condition Min. 10 Typ. Max. 18 Unit V Capstan Power Supply Voltage 10 18 V Loading Power Supply Voltage 10 18 V Logic Power Supply Voltage 4.5 5.5 V 4.75 3.6 5.25 4.4 V V Sensor Power Supply Voltage Undervoltage Threshold # WARNING The functionality of the I.C. is guaranted in this voltage range. Nevertheless the specified operating voltages (VDC, VDD, VDL), must be selected according to the load characteristics. Proper cautions must be taken in the application in order to assure that the drain-source voltage across each output power transistor does not exceed 20V max. LOADING MOTOR ACTIVATION TRUTH TABLE INPUT OUTPUT LPWM LDIR LOUTA LOUTB 0 0 LOW LOW 0 1 1 0 LOW HIGH LOW LOW 1 1 LOW HIGH Symbol RDSH RDSL (*)IOL Parameter High Side R DSonH Low Side RDSonL DC Output Current (*)Ipl Peak Output Current Test Condition Min. Typ. DUTY CYCLE = 10%; t ON = 500ms Max. 2 2 800 Unit mA 1 A Max. Unit 400 600 mA mA 800 mA 1.6 1.6 Max. 800 1 Unit mA A 1.5 A 1 1 DRUM MOTOR Symbol Parameter Icd (*)Icdp (*)Ipdb DC Output Current Peak Output Current Peak Output Current RDSH RDSL High Side RDSonH Low Side RDSonL Test Condition Min. Typ. DUTY CYCLE = 10%; tON = 500ms CAPSTAN MOTOR Symbol Ico (*)Icop (*)Ipob RDSH RDSL Parameter DC Output Current Peak Output Current Peak Output Current High Side RDSonH Low Side RDSonL Test Condition DUTY CYCLE = 10%; tON = 1ms Min. Typ. (*) WARNING These current values are compatible with the structure of the IC power structure. Nevertheless the use of these current levels could produce junction temperatures that force IC outside of the operative range due to the thermal characteristics of the choosen package. 5/9 L6287 ELECTRICAL CHARACTERISTICS (continued) DRUM TACHO CONVERTER Symbol Iod Iot Ioc Iot vs Ior Vref VOC Vthr1 Max. Unit Open Loop Output Current Full Light Current Range Parameter Vod = 1V; Ioc = 100A (Note 1) 30 0.5 60 3 mA mA Sink Current Vor = 0; Iod = 0 0.2 0.5 A Min. 10 % VS = 4.75V VS = 5V 3.36 3.54 3.72 3.91 V V VS = 5.25V VOD = 1V see Fig. 1 VS = 4.75V VS = 5V VS = 5.25V VS = 4.75V 3.72 4.11 V Mismatch Typ. 5 Opto Resistor Reference Voltage Open Loop Opto Capacitor Voltage Clock Threshold Voltage Vthr2 Reset Threshold Voltage tpud P Syncro Pulse Duration Open Drain Sink Current Ipud1 Test Condition 2.75 V 2.19 2.42 V VS = 5V 2.30 2.54 V VS = 5.25V VS = 4.75V VS = 5V 2.42 2.67 V 0.30 0.32 0.33 0.35 V V VS = 5.25V 0.33 0.37 V 3 VO = 0.4V 1 5 s mA Note 1: The suggested Copt external capacitor value is 5F (5%) HALL COMPARATOR Symbol Parameter Vin Ib Vof Input Voltage Range Input Bias Current Vhy Switchable Hysteresys Test Condition Min. Max. Unit 0.5 Typ. 2.7 1 V A 8 mV 10 40 mV Typ. Max. 170 185 Unit mA o C Input Offset Voltage Vref = 1.5V; THERMAL PROTECTION Symbol Itherm Ts Tsdh Tal1 Tal2 Parameter Open Drain Sink Current Shutdown Temperature Shutdown Hysteresis Early Warning Temperature Last Warning Temperature Test Condition Vout = 0.4V (see note 1) Min. 5 155 o 60 Ts -40 Ts -20 (see note 2) C C C o NOTE 1: Therm output stage is on in the normal temperature range NOTE 2: In the Tal-Tll temperature range therm signal follows the inverted Fstart signal. After Tll temperature this output is always in high impedance. If thermal shutdown is reached this pin will remain in this state until the shutdown hysteresys will be recovered. HEATER Symbol Rdsheat Vheat 6/9 Parameter Heater RDSon Heater Voltage Test Condition Min. Typ. Max. 3 18 Unit ohm V L6287 ELECTRICAL CHARACTERISTICS (continued.) LOGIC LEVELS FOR DIGITAL INPUTS (CPWM, CDIR, DPWM, FSTART, LPWM, LDIR) A pull up resistor Ri is connected between the CDIR, FSTART, LPWM, LDIR inputs pads; CPWM and DPWM are left unconnected. Symbol Vil Parameter Input Low Voltage Vih Ri Input High Voltage Pull Up Resistor Test Condition Min. Typ. 2 3.5 Max. 0.8 Unit V 10.5 V Kohm Max. 20 Unit uA TIME OUT STAGE Symbol Icto Parameter Time Out Output Current Test Condition (Note 1) Min. 5 Typ. Note 1: The suggested external capacitor value is Cto = 1F (20% max) for fSTART = 20KHz. Figure 1: Optocircuit Open Loop OC Voltage. 7/9 L6287 mm DIM. MIN. TYP. A inch MAX. MIN. TYP. 5.08 0.20 A1 0.51 A2 3.05 3.81 4.57 0.120 B 0.38 0.46 0.56 0.0149 0.0181 0.0220 B1 0.89 1.02 1.14 0.035 c 0.23 0.25 0.38 0.0090 0.0098 0.0150 D 36.58 36.83 37.08 1.440 E 15.24 16.00 0.60 E1 12.70 14.48 0.50 0.020 13.72 0.150 0.040 1.450 0.180 0.045 1.460 0.629 0.540 e 1.778 0.070 e1 15.24 0.60 0.570 e2 18.54 0.730 e3 1.52 0.060 L 2.54 OUTLINE AND MECHANICAL DATA MAX. 3.30 3.56 0.10 0.130 SDIP42 (0.600") 0.140 E A2 A L A1 E1 B B1 e e1 e2 D c E 42 22 .015 0,38 Gage Plane 1 e3 21 e2 SDIP42 8/9 L6287 Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specification mentioned in this publication are subject to change without notice. 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