UNISONIC TECHNOLOGIES CO., LTD L6219 LINEAR INTEGRATED CIRCUIT DUAL FULL-BRIDGE PWM MOTOR DRIVER DESCRIPTION The L6219 motor driver is designed to drive both windings of a bipolar stepper motor or bidirectionally control two dc motors. Both bridges are capable of sustaining 45V and include internal pulse-width modulation (PWM) control of the output current to 750mA .The outputs have been optimized for a low output saturation voltage drop (less than 1.8V total source plus sink at 500mA ). For PWM current control, the maximum output current is determined by the user’s selection of a reference voltage and sensing resistor. Two logic-level inputs select output current limits of 0, 33, 67,or 100% of the maximum level. A phase input to each bridge determines load current direction. The bridges include both ground clamp and flyback diodes for protection against inductive transients. Internally generated delays prevent cross-over currents when switching current direction. Special power-up sequencing is not required. Thermal protection circuitry disables the outputs if the chip temperature exceeds safe operating limits. SOP-24 FEATURES *Interchangeable with SGS L6219 *750mA Continuous Output Current *45V Output Sustaining Voltage *Internal Clamp Diodes *Internal PWM Current Control *low Output Saturation Voltage *Internal Thermal Shutdown Circuitry ORDERING INFORMATION Ordering Number L6219G-S24-R L6219G-S24-R Package SOP-24 (1)Packing Type (1) R: Tape Reel (2)Package Type (2) S24: SOP-24 (3)Green Package (3) G: Halogen Free and Lead Free Packing Tape Reel MARKING www.unisonic.com.tw Copyright © 2015 Unisonic Technologies Co., Ltd 1 of 6 QW-R109-005.C L6219 PIN CONFIGURATION 24 LOAD SUPPLY 23 SENSE1 22 COMP IN1 21 OUT1B 5 20 I01 6 19 GROUND 7 18 GROUND I02 8 17 I11 I12 9 16 PHASE1 PHASE2 10 15 VREF1 VREF2 11 14 RC1 RC2 12 1 OUT2A 2 SENSE2 3 COMP IN2 4 OUT2B GROUND GROUND VBB 1 2 θ2 PWM1 OUT1A PWM2 LINEAR INTEGRATED CIRCUIT θ1 Vcc 13 LOGIC SUPPLY PWM CURRENT-CONTROL CIRCUITRY CHANNEL 1 TERMINAL NUMBERS SHOWN VBB 24 OUTB 1 21 OUTA VREF 15 23 20kΩ ÷ 10 40kΩ I0 20 COMP IN 22 RC 10kΩ RS I1 + SOURCE DISABLE ONE SHOT 14 RC CC RT 17 SENSE CT TRUTH TABLE PHASE H L OUTA H L OUTB L H UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 6 QW-R109-005.C L6219 TYPICAL APPLICATION STEPPER MOTOR VBB 1 1 3 Cc FROM μP 20 6 19 7 18 8 17 10 θ2 θ1 12 CT UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw + Rc Cc FROM μP 16 15 VREF 14 11 VREF VBB RS 21 5 9 RT 22 2 4 PWM1 Rc 24 23 2 RS PWM2 LINEAR INTEGRATED CIRCUIT Vcc CT 13 RT +5V 3 of 6 QW-R109-005.C L6219 LINEAR INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATINGS (TA=25°C, unless otherwise specified) PARAMETER Motor Supply Voltage RATINGS UNIT 45 V Peak 1.0 A Output Current IOUT Continuous 750 mA Logic Supply Voltage VCC 7.0 V Logic Input Voltage Range VIN -0.3 ~ +7.0 V Output Emitter Voltage VSENSE 1.5 V Package Power Dissipation PD See graph Junction Temperature TJ 125 C Operating Temperature TOPR -20~+85 C Storage Temperature TSTG -40 ~ +150 C Note 1.Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. 2.The device is guaranteed to meet performance specification within 0℃~+70C operating temperature range and assured by design from -20℃~+85C. 3.Output current rating may be limited by duty cycle, ambient temperature, and heat sinking. Under any set of conditions, do not exceed the specified peak current rating or a junction temperature of +150C SYMBOL VBB ELECTRICAL CHARACTERISTICS (TA=25C, VCC=4.75V to 5.25V, VBB=45V, TJ≤150C, VREF=5.0V) PARAMETER SYMBOL Output Drivers(OUTA or OUTB) Motor Supply Range VBB Output Leakage Current ILEAK Output Sustaining Voltage VCE(SUS) Output Saturation Voltage VCE(SAT) Clamp Diode Leakage Current Clamp Diode Forward Voltage Driver Supply Current IR VF IBB(ON) IBB(OFF) TEST CONDITIONS VOUT=VBB VOUT=0 IOUT=±750mA,L=3.0mH Sink Driver, IOUT=+500mA Sink Driver, IOUT=+750mA Source Driver, IOUT= -500mA Source Driver, IOUT= -750mA VR=45V IF=750mA Both Bridges On, No Load Both Bridge Off MIN TYP MAX UNIT 10 45 - <1.0 <-1.0 0.4 1.0 1.0 1.3 <1.0 1.6 20 5.0 45 50 -50 0.6 1.2 1.2 1.5 50 2.0 25 10 V μA μA V V V V V μA V mA mA 2.4 1.5 9.5 13.5 25.5 - <1.0 -3.0 10 15 30 40 10 170 0.8 20 -200 7.5 10.5 16.5 34.5 50 12 - V V μA μA V - Control Logic Input Voltage VIN(1) VIN(0) Input Current IIN(1) Reference Voltage Range VREF Current Limit Threshold (at trip point) Total Logic Supply Current Thermal Shutdown Temperature VREF/VCOMPIN ICC(ON) ICC(OFF) TSHDN All Inputs All Inputs VIN=2.4V VIN=0.8V Operating I0=I1=0.8V I0=2.4V, I1=0.8V I0=0.8V, I1=2.4V I0=I1=0.8V, No Load I0=I1=2.4V, No Load UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw mA C 4 of 6 QW-R109-005.C L6219 LINEAR INTEGRATED CIRCUIT PWM CURRENT CONTROL The L6219 dual bridge is designed to drive both windings of a bipolar stepper motor. Output current is sensed and controlled independently in each bridge by an external sense resistor (Rs), internal comparator, and monostable multivibrator. When the bridge is turned on, current increases in the motor winding and it is sensed by the external sense resistor until the sense voltage (VCOMPIN) reaches the level set at the comparator’s input :ITRIP=VREF/10Rs The comparator then triggers the monostable which turns off the source driver of the bridge. The actual load current peak will be slightly higher than the trip point (especially for low-inductance loads) because of the internal logic and switching delays. This delay (td)is typically 2μs.After turn-off, the motor current decays, circulating through the ground-clamp diode and sink transistor. The source driver’s off time (and therefore the magnitude of the current decrease)is determined by the monostable’s external RC timing components, where tOFF=RTCT within the range of 20kΩ to 100kΩ and 100pF to 1000pF When the source driver is re-enabled, the winding current (the sense voltage) is again allowed to rise to the comparator’s threshold. This cycle repeats itself, maintaining the average motor winding current at the desired level. Loads with high distributed capacitances may result in high turn-on current peaks. This peak (appearing across Rs) will attempt to trip the comparator, resulting in erroneous current control or high-frequency oscillations. An external RCCC time delay should be used to further delay the action of the comparator. Depending on load type, many applications will not require these external components (SENSE connected to COMP IN). PWM OUTPUT CURRENT WAVE FORM LOAD CURRENT PATHS VBB VPHASE IOUT+ 0 ITRIP RS tD tOFF UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw BRIDGE ON SOURCE OFF ALL OFF 5 of 6 QW-R109-005.C L6219 LINEAR INTEGRATED CIRCUIT TYPICAL CHARACTERISTIC Allowable package power dissipation in watts 2.5 2.0 R?JT=6°C/W 1.5 1.0 R?JT=55°C/W 0.5 0 25 50 75 100 Temperature, in°C 125 150 UTC assumes no responsibility for equipm ent failures that result from using products at values that exceed, even mom entarily, rated values (such as m aximum ratings, operating condition ranges, or other param eters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or system s where m alfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The inform ation presented in this docum ent does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 6 of 6 QW-R109-005.C