Data Sheet 29319.12A† 2962 DUAL SOLENOID/MOTOR DRIVER —PULSE-WIDTH MODULATED CURRENT CONTROL 1 IN A 2 SENSE A 3 SINK A 4 SOURCE A 5 THS A 6 7 SOURCE B 8 SINK B 9 SENSE B 10 IN B 11 THS B 12 The peak output current and hysteresis for each source/sink pair is set independently. Output current, threshold voltage, and hysteresis are set by the user’s selection of external resistors. At the specified outputcurrent trip level, the source driver turns off. The internal clamp diode then allows current to flow without additional input from the power supply. When the lower current trip point is reached, the source driver turns back on. LOGIC V CC LOGIC GROUND Using PWM to minimize power dissipation and maximize load efficiency, the UDN2962W dual driver is recommended for impact printer solenoids and stepper motors. It is comprised of two source/ sink driver pairs rated for continuous operation to ±3 A. It can be connected to drive two independent loads or a single load in the fullbridge configuration. Both drivers include output clamp/flyback diodes, input gain and level shifting, a voltage regulator for singlesupply operation, and pulse-width modulated output-current control circuitry. Inputs are compatible with most TTL, DTL, LSTTL, and low-voltage CMOS or PMOS logic. Dwg. No. D-1001 The UDN2962W is in a 12-pin single in-line power-tab package. The tab is at ground potential and needs no insulation. For highcurrent or high-frequency applications, external heat sinking may be required. FEATURES ABSOLUTE MAXIMUM RATINGS at TJ ≤ +150°C Supply Voltage, VCC . . . . . . . . . . . . . . 45 V Peak Output Current, IOUT . . . . . . . . . ±4 A Input Voltage Range, VIN . . . . . . . . . . . . . . . -0.3 V to +7.0 V Package Power Dissipation, PD . . . . . . . . . . . . . . . . . . . See Graph Operating Temperature Range, TA . . . . . . . . . . . . . . . . -20°C to +85°C Storage Temperature Range, TS . . . . . . . . . . . . . . . -55°C to +150°C ■ ■ ■ ■ ■ 4 A Peak Output 45 V Min. Sustaining Voltage Internal Clamp Diodes TTL/PMOS/CMOS Compatible Inputs High-Speed Chopper NOTE: 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 and a junction temperature of +150°C. Always order by complete part number: UDN2962W . 2962 DUAL PWM SOLENOID/MOTOR DRIVER FUNCTIONAL BLOCK DIAGRAM (ONE OF TWO DRIVERS) VCC SOURCE LOAD SINK IN SENSE GND + RS (TYP.0.1 ) _ -10 VREF RH THS RT Dwg. No. D-1002 TRUTH TABLE ALLOWABLE PACKAGE POWER DISSIPATION IN WATTS 10 VIN VSENSE SOURCE DRIVER SINK DRIVER High Low Low NA <VTHS /10 >VTHS /10 Off On Off Off On On RθJT = 2.0°C/W 8 3.0°C/W HEAT SINK RθJA = 5.0°C/W 6 12°C/W HEAT SINK RθJA = 14°C/W 4 2 FREE AIR, R θJA = 38°C/W 0 25 50 75 100 TEMPERATURE IN °C 125 150 Dwg. GP-012B 115 Northeast Cutoff, Box 15036 W Worcester, Massachusetts 01615-0036 (508) 853-5000 Copyright © 1986, 2000 Allegro MicroSystems, Inc. 2962 DUAL PWM SOLENOID/MOTOR DRIVER ELECTRICAL CHARACTERISTICS at TA = +25°C, TJ ≤ +150°C, VCC = 45 V, VSENSE = 0 V (unless otherwise noted). Characteristic Supply Voltage Range Symbol Test Conditions Min. Limits Typ. Max. Units VCC Operating 20 — 45 V ICEX VIN = 2.4 V, VSOURCE = 0 V — <-1.0 -100 µA VIN = 2.4 V, VSINK = 45 V — <1.0 100 µA Source Drivers, ILOAD = 3.0 A — 2.1 2.3 V Source Drivers, ILOAD = 1.0 A — 1.7 2.0 V Sink Drivers, ILOAD = 3.0 A — 1.7 2.0 V Sink Drivers, ILOAD = 1.0 A — 1.1 1.3 V IOUT = ±3.0 A, L = 3.5 mH 45 — — V VTHS = 0.6 V to 1.0 V, L = 3.5 mH — — ±25 % VTHS = 1.0 V to 2.0 V, L = 3.5 mH — — ±10 % VTHS = 2.0 V to 5.0 V, L = 3.5 mH — — ±5.0 % Output Drivers Output Leakage Current Output Saturation Voltage VCE(SAT) Output Sustaining Voltage VCE(sus) Output Current Regulation ∆IOUT Clamp Diode Forward Voltage VF IF = 3.0 A — 1.7 2.0 V Output Rise Time tr ILOAD = 3.0 A, 10% to 90%, Resistive Load — 0.5 1.0 µs Output Fall Time tf ILOAD = 3.0 A, 90% to 10%, Resistive Load — 0.5 1.0 µs VIN(1) 2.4 — — V VIN(0) — — 0.8 V Control Logic Logic Input Voltage Logic Input Current IIN(1) VIN = 2.4 V — 1.0 10 µA IIN(0) VIN = 0.8 V — -20 -100 µA ITHS(ON) VTHS ≥ 500 mV, VSENSE ≤ VTHS /10.5 — -2.0 — µA ITHS(HYS) VSENSE ≥ VTHS /9.5, VTHS = 0.6 V to 5.0 V 140 200 260 µA VTHS /VSENSE Ratio — At Trip Point, VTHS = 2.0 V to 5.0 V 9.5 10 10.5 — Supply Current (Total Device) lCC VIN = 2.4 V, Outputs Off — 8.0 12 mA VIN = 0.8 V, Outputs Open — 25 40 mA Propagation Delay Time (Resistive Load) tpd 50% VIN to 50% VOUT, Turn Off — — 2.5 µs 50% VIN to 50% VOUT, Turn On — — 3.0 µs 100% VSENSE to 50% VOUT* — — 3.0 µs * Where VSENSE ≥ VTHS /9.5 NOTE: Negative current is defined as coming out of (sourcing) the specified device pin. www.allegromicro.com 2962 DUAL PWM SOLENOID/MOTOR DRIVER CIRCUIT DESCRIPTION AND APPLICATIONS INFORMATION The UDN2962W high-current driver is intended for use as a free-running, pulse-width modulated solenoid driver. Circuit Layout. To prevent interaction between channels, each of the two high-level power ground returns (the low side of the sense resistors) must be returned independently to the low-level signal ground (pin 1). The circuit common (pin 1) can then be routed to the system ground. Circuit Description. In operation, the source and sink drivers are both turned on by a low level at the input. The load current rises with time as a function of the load inductance, total circuit resistance, and supply voltage and is sensed by the external sense resistor (RS). When the load current reaches the trip point (ITRIP), the comparator output goes high and turns off the source driver. The actual load current will peak slightly higher than ITRIP because of the internal logic and switching delays. The printed wiring board should utilize a heavy ground plane. For optimum performance, the driver should be soldered directly into the board. After the source driver is turned off, the load current continues to circulate through the sink driver and an internal ground clamp diode. The rate of current decay is a function of the load inductance and total circuit resistance. The power supply (VCC) should be decoupled with an electrolytic capacitor (≥10 µF) as close as possible to pin 7. An internal constant current sink reduces the trip point (hysteresis) until the decaying load current reaches the lower threshold, when the comparator output goes low and the source driver is again turned on. Load current is again allowed to rise to the trip point and the cycle repeats. SUPPLY SYSTEM GROUND R Maximum load current and hysteresis is determined by the user. 1 S 3 7 R 10 + S Determining Maximum Load Current and Hysteresis. Trip current (ITRIP) is determined as a function of resistance RS and the threshold voltage, VTHS: ITRIP = Dwg. OP-001 TYPICAL WAVESHAPES VTHS 10 RS VIN where VTHS = 10 x VSENSE = 0.6 V to 5.0 V. V CC Hysteresis percentage (H) is determined by resistance RH and is independent of the load current: V SINK GND V CC H= VSOURCE RH GND 50 x VREF I TRIP • RS =VTHS 10 The chopping frequency is asynchronous and a function of the system and circuit parameters, including load inductance, supply voltage, hysteresis setting, and switching speed of the driver. I LOAD VTHS Resistance RT is determined as: RT = Dwg. WP-006 RH VTHS VREF – VTHS Note that if VTHS = VREF, then RT = ∞. 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 2962 DUAL PWM SOLENOID/MOTOR DRIVER APPLICATIONS INFORMATION RESISTOR RH VALUE AS A FUNCTION OF HYSTERESIS RESISTOR RT VALUE AS A FUNCTION OF PEAK LOAD CURRENT 25 25 20 VREF= 5 V R T IN kΩ R H IN kΩ 20 15 10 VREF = 5V RS = 0.1Ω 15 H= 25 % 2 H= 10 0% 15 H= 5 5 % 0% H=1 H =5% 0 0 0 20 60 40 HYSTERESIS, H, IN PERCENT 80 100 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 LOAD CURRENT, IMAX , IN AMPERES Dwg. No. A-12,417 Dwg. No. A-12,416 Dwg. No. D-1004 RH AND RT DETERMINE HYSTERESIS AND PEAK CURRENT NOTE: Each of the drivers includes an internal logic delay to prevent potentially destructive crossover currents within the driver during phase changes. However, never simultaneously enable both inputs in the fullbridge configurations: A destructive short-circuit to ground will result. www.allegromicro.com 2962 DUAL PWM SOLENOID/MOTOR DRIVER Dimensions in Inches (controlling dimensions) 0.180 1.260 1.240 0.020 MAX 0.775 0.765 0.245 0.225 0.055 0.045 0.155 ø 0.145 0.140 0.365 INDEX AREA 0.065 0.035 0.570 0.540 0.135 0.100 0.290 MIN 1 0.030 0.020 12 0.100 0.023 0.018 ±0.010 NOTES: 1. 2. 3. 4. 5. 0.080 0.070 Dwg. MP-007 in Lead thickness is measured at seating plane or below. Lead spacing tolerance is non-cumulative. Exact body and lead configuration at vendor’s option within limits shown. Lead gauge plane is 0.030” below seating plane. Supplied in standard sticks/tubes of 15 devices. 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 2962 DUAL PWM SOLENOID/MOTOR DRIVER Dimensions in Millimeters (for reference only) 32.00 31.49 0.51 4.57 MAX 19.69 19.45 6.22 5.71 1.40 1.14 3.94 ø 3.68 3.56 9.27 INDEX AREA 1.65 0.89 14.48 13.71 3.43 2.54 7.36 MIN 1 0.76 0.51 12 2.54 ±0.254 0.59 0.45 2.03 1.77 Dwg. MP-007 mm NOTES: 1. 2. 3. 4. 5. Lead thickness is measured at seating plane or below. Lead spacing tolerance is non-cumulative. Exact body and lead configuration at vendor’s option within limits shown. Lead gauge plane is 0.762 mm below seating plane. Supplied in standard sticks/tubes of 15 devices. The products described here are manufactured under one or more U.S. patents or U.S. patents pending. Allegro MicroSystems, Inc. reserves the right to make, from time to time, such departures from the detail specifications as may be required to permit improvements in the performance, reliability, or manufacturability of its products. Before placing an order, the user is cautioned to verify that the information being relied upon is current. Allegro products are not authorized for use as critical components in lifesupport devices or systems without express written approval. The information included herein is believed to be accurate and reliable. However, Allegro MicroSystems, Inc. assumes no responsibility for its use; nor for any infringement of patents or other rights of third parties which may result from its use. www.allegromicro.com 2962 DUAL PWM SOLENOID/MOTOR DRIVER MOTOR DRIVERS Output Ratings* Part Number† INTEGRATED CIRCUITS FOR BRUSHLESS DC MOTORS 3-Phase Power MOSFET Controller — 28 V 3933 3-Phase Power MOSFET Controller — 50 V 3932 3-Phase Power MOSFET Controller — 50 V 7600 2-Phase Hall-Effect Sensor/Driver 400 mA 26 V 3626 Bidirectional 3-Phase Back-EMF Controller/Driver ±600 mA 14 V 8906 2-Phase Hall-Effect Sensor/Driver 900 mA 14 V 3625 3-Phase Back-EMF Controller/Driver ±900 mA 14 V 8902–A 3-Phase Controller/Drivers ±2.0 A 45 V 2936 & 2936-120 INTEGRATED BRIDGE DRIVERS FOR DC AND BIPOLAR STEPPER MOTORS Dual Full Bridge with Protection & Diagnostics ±500 mA 30 V 3976 PWM Current-Controlled Dual Full Bridge ±650 mA 30 V 3966 PWM Current-Controlled Dual Full Bridge ±650 mA 30 V 3968 PWM Current-Controlled Dual Full Bridge ±750 mA 45 V 2916 PWM Current-Controlled Dual Full Bridge ±750 mA 45 V 2919 PWM Current-Controlled Dual Full Bridge ±750 mA 45 V 6219 PWM Current-Controlled Dual Full Bridge ±800 mA 33 V 3964 PWM Current-Controlled Full Bridge ±1.3 A 50 V 3953 PWM Current-Controlled Dual Full Bridge ±1.5 A 45 V 2917 PWM Current-Controlled Microstepping Full Bridge ±1.5 A 50 V 3955 PWM Current-Controlled Microstepping Full Bridge ±1.5 A 50 V 3957 PWM Current-Controlled Dual DMOS Full Bridge ±1.5 A 50 V 3972 Dual Full-Bridge Driver ±2.0 A 50 V 2998 PWM Current-Controlled Full Bridge ±2.0 A 50 V 3952 DMOS Full Bridge PWM Driver ±2.0 A 50 V 3958 Dual DMOS Full Bridge ±2.5 A 50 V 3971 UNIPOLAR STEPPER MOTOR & OTHER DRIVERS Voice-Coil Motor Driver ±500 mA 6V 8932–A Voice-Coil Motor Driver ±800 mA 16 V 8958 Unipolar Stepper-Motor Quad Drivers 1A 46 V 7024 & 7029 Unipolar Microstepper-Motor Quad Driver 1.2 A 46 V 7042 Unipolar Stepper-Motor Translator/Driver 1.25 A 50 V 5804 Unipolar Stepper-Motor Quad Driver 1.8 A 50 V 2540 Unipolar Stepper-Motor Quad Driver 1.8 A 50 V 2544 Unipolar Stepper-Motor Quad Driver 3A 46 V 7026 Unipolar Microstepper-Motor Quad Driver 3A 46 V 7044 Function * Current is maximum specified test condition, voltage is maximum rating. See specification for sustaining voltage limits or over-current protection voltage limits. Negative current is defined as coming out of (sourcing) the output. † Complete part number includes additional characters to indicate operating temperature range and package style. Also, see 3175, 3177, 3235, and 3275 Hall-effect sensors for use with brushless dc motors. 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000