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| 2943 HIGH-CURRENT HALF-BRIDGE MOTOR DRIVER 2943 Data Sheet 29318.4B HIGH-CURRENT HALF-BRIDGE MOTOR DRIVER Designed for use as a general-purpose motor driver, the UDN2943Z half-bridge driver combines high-current sink and source drivers with logic stages, level shifting, diode transient protection, and a voltage regulator for single-supply operation. Capable of operating in extremely harsh environments, this device can withstand high ambient temperatures, output overloads, and repeated power supply transient voltages without damage. The driver can be used in pairs for full-bridge operation, or as triplets in three-phase brushless dc motordrive applications. 1 ABSOLUTE MAXIMUM RATINGS Supply Voltage, Range V S .... 8.5 V to 35 V* Output Voltage, V CE(sus) ....................... 24 V Input Voltage Range, V IN .... -0.3 V to +18 V Continuous Output Current, IOUT ...... 1.0 A Package Power Dissipation, P D ....................................... See Graph Operating Temperature Range, T A ................................. -20C to +85C Storage Temperature Range, T S ............................... -55C to +150C *Internal high-voltage shutdown above 24 V. U E NT C I TC N N U RE ODE COF SRE IP Y D R NL RO O F -- 2 3 4 5 The input circuitry is compatible with TTL, low-voltage CMOS, and NMOS logic. Logic lockout prevents both source and sink drivers from turning ON simultaneously. Each driver is turned ON by an activelow input, making the UDN2943Z especially desirable in many microprocessor applications. An accidental input open circuit will turn OFF the corresponding output. The device also provides an internallygenerated dead time to prevent crossover currents during output switching. Monolithic, space-saving construction offers reliability unobtainable with discrete components. Saturated output drivers provide for low saturation voltage at the maximum rated current. Internal short-circuit protection, activated at load currents above 1 A, protects the source driver from accidental short-circuits between the output and ground. The UDN2943Z driver is rated for continuous operation with inductive loads at supply voltages of up to 24 V. With supply voltage transients (to 35 V maximum), a high-voltage protection circuit becomes operative, shutting OFF both output drivers. The internal thermal shutdown is triggered by a nominal junction temperature of 160C. Single-chip construction and a 5-lead power-tab TS-001 plastic package provide cost-effective and reliable systems designs. It also features excellent power dissipation ratings, minimum size, and ease of installation. The heat-sink tab is at ground potential and does not require insulation. D E SOURCE INPUT GROUND Dwg. PP-022-1 SINK INPUT OUTPUT +V S FEATURES s s s s s 1 A Output Current Saturated Output Drivers Logic-Compatible Inputs Output-Transient Protection Tri-State Output s s s s s 8.5 V to 24 V Operating Range Crossover-Current Protected Withstands 35 V Supply Transients Internal Over-Voltage Protection Internal Short-Circuit Protection Always order by complete part number: UDQ2943Z . A TM MicroSystems, Inc. 2943 HIGH-CURRENT HALF-BRIDGE MOTOR DRIVER FUNCTIONAL BLOCK DIAGRAM V S 1 6.35 V HIGH-CURRENT SENSE SOURCE INPUT 2 2.1 V OVER-VOLT. & TSD L-TO-H DELAY 4 H-TO-L DELAY OUTPUT SINK INPUT 5 2.1 V 3 GROUND Dwg. FP-038 ALLOWABLE PACKAGE POWER DISSIPATION IN WATTS 20 R JT = 3.0C/W 15 AAVID 5071B + 5072B HEAT SINKS, R = 9.0C/W JA LOGIC TRUTH TABLE Source Driver Pin 2 Sink Driver Pin 5 Low High Low High Output Pin 4 High High Low High Z 10 5 STAVER V1-5 HEAT SINK, R = 13C/W JA Low Low High High FREE AIR, R JA = 65C/W 0 25 50 75 100 TEMPERATURE IN C 125 150 Dwg. GP-014A A TM MicroSystems, Inc. 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts15036 115 Northeast Cutoff, Box 01615-0036 (508) 853-5000 Copyright (c)Massachusetts 01615-0036 (508) 853-5000 Worcester, 1986, 1994, Allegro MicroSystems, Inc. 2943 HIGH-CURRENT HALF-BRIDGE MOTOR DRIVER ELECTRICAL CHARACTERISTICS at TA = +25C, VS = +24 V (unless otherwise noted). Characteristic Output Leakage Current (VS = +35 V) Output Sustaining Voltage VCE(sus) Symbol ICEX Source Driver Input, Pin 2 2.4 V 2.4 V 2.4 V 0.8 to 2.4 V Output Saturation Voltage VCE(SAT) 0.8 V 2.4 V Short-Circuit Source Current Logic Input Voltage ISC VIN(1) VIN(0) Input Current IIN(1) IIN(0) Clamp Diode Forward Voltage Logic Supply Current VF IS 0.8 V -- -- 2.4 V 0.8 V NC 2.4 V 2.4 V 0.8 V Thermal Shutdown Temperature Over-Voltage Shutdown Propagation Delay TJ VS tPD -- -- 2.4 V 0.8 to 2.4 V 2.4 V 2.4 to 0.8 V Sink Driver Input, Pin 5 2.4 V 2.4 V 0.8 to 2.4 V 2.4 V 2.4 V 0.8 V 2.4 V -- -- 2.4 V 0.8 V NC 2.4 V 0.8 V 2.4 V -- -- 2.4 V to 0.8 V 2.4 V 0.8 to 2.4 V 2.4 V Output Pin 4 0V 35 V 1.0 A -1.0 A -1.0 A 1.0 A 0V -- -- NC NC 1.0 A NC NC NC -- -- 0.4 A -0.4 A 0.4 A -0.4 A Other -- -- Fig. 1A Fig. 1B -- -- -- -- -- -- -- Fig. 2 -- -- -- -- -- Fig. 3 Fig. 4 Fig. 3 Fig. 4 Min. -- -- 24 24 -- -- 1.0 2.0 -- -- -- -- -- -- -- -- 24 -- -- -- -- Limits Typ. Max. -10 10 -- -- 1.2 0.6 -- -- -- 10 -50 1.5 15 55 30 160 -- 0.6 1.0 1.1 0.6 -100 100 -- -- 1.8 1.0 1.8 -- 0.8 100 -200 2.0 30 75 40 -- 35 -- -- -- -- Units A A V V V V A V V A A V mA mA mA C V s s s s Notes: Negative current is defined as coming out of (sourcing) the specified device pin. Typical Data is for design information only. SOURCE INPUT VOLTAGE SINK INPUT VOLTAGE SINKING CURRENT + OUTPUT 0 CURRENT - OPEN CIRCUIT SOURCING CURRENT Dwg. WP-024 Dwg. WP-024 2943 HIGH-CURRENT HALF-BRIDGE MOTOR DRIVER VS 1 2 3 4 5 VS 1 2 3 4 5 1 2 NC 3 NC 4 5 NC VS 2.4 V VIN V IN I OUT 2.4 V 28 mH I OUT 28 mH Dwg. EP-053 IF Dwg. EP-055 Dwg. EP-054 Figure 1A Figure 1B Figure 2 VS 1 2 3 4 5 VS 1 2 3 4 5 2.4 V VIN I OUT V IN 2.4 V I OUT Dwg. EP-056 Dwg. EP-057 Figure 3 Figure 4 A TM MicroSystems, Inc. 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 2943 HIGH-CURRENT HALF-BRIDGE MOTOR DRIVER Dimensions in Inches Dimensions in Millimeters (Based on 1" = 25.40 mm) 0.190 0.165 0.055 0.035 10.54 9.91 3.96 O 3.53 4.82 4.19 1.39 0.89 0.415 0.390 0.156 O 0.139 0.539 0.465 1 5 0.625 0.570 0.370 0.330 13.69 11.81 1 5 15.87 14.48 9.39 8.39 1.045 0.945 26.54 24.00 0.040 0.020 0.067 BSC 0.025 0.012 0.115 0.085 Dwg. MP-005 in 1.01 0.51 1.70 BSC 0.63 0.31 2.92 2.16 Dwg. MP-005 mm 2943 HIGH-CURRENT HALF-BRIDGE MOTOR DRIVER MOTOR DRIVERS SELECTION GUIDE Function Output Ratings * Part Number INTEGRATED CIRCUITS FOR BRUSHLESS DC MOTORS 3-Phase Controller/Drivers 2.0 A 45 V 2936 and 2936-120 Hall-Effect Latched Sensors 10 mA 24 V 3175 and 3177 2-Phase Hall-Effect Sensor/Controller 20 mA 25 V 3235 Hall-Effect Complementary Output Sensor 20 mA 25 V 3275 2-Phase Hall-Effect Sensor/Driver 900 mA 14 V 3625 2-Phase Hall-Effect Sensor/Driver 400 mA 26 V 3626 Hall-Effect Comp. Output Sensor/Driver 300 mA 60 V 5275 3-Phase Back-EMF Controller/Driver 900 mA 14 V 8902-A 3-Phase Controller/DMOS Driver 4.0 A 14 V 8925 3-Phase Back-EMF Controller/Driver 1.0 A 7V 8980 and 8983 INTEGRATED BRIDGE DRIVERS FOR DC AND BIPOLAR STEPPER MOTORS PWM Current Controlled Dual Full Bridge 750 mA 45 V 2916 PWM Current Controlled Dual Full Bridge 1.5 A 45 V 2917 PWM Current Controlled Dual Full Bridge 1.5 A 45 V 2918 PWM Current Controlled Dual Full Bridge 750 mA 45 V 2919 Half-Bridge Driver 1.0 A 24 V 2943 Dual Full Bridge Driver 2.0 A 50 V 2998 PWM Current Controlled Full Bridge 2.0 A 50 V 3952 PWM Current Controlled Full Bridge 1.3 A 50 V 3953 PWM Current Controlled Dual Full Bridge 800 mA 45 V 3961 PWM Current Controlled Dual Full Bridge 800 mA 30 V 3962 OTHER INTEGRATED CIRCUIT MOTOR DRIVERS Unipolar Stepper Motor Quad Driver 1.8 A 50 V 2544 Unipolar Stepper-Motor Translator/Driver 1.25 A 50 V 5804 Unipolar Stepper-Motor Quad Driver 1A 46 V 7024 and 7029 Unipolar Microstepper-Motor Quad Driver 1.2 A 46 V 7042 Voice-Coil Motor Driver 500 mA 6V 8932-A Voice-Coil Motor Driver 800 mA 16 V 8958 Voice-Coil (and spindle) Motor Driver 350 mA 7V 8980 and 8983 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. * 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 design of its products. Components made under military approvals will be in accordance with the approval requirements. The information included herein is believed to be accurate and reliable. However, Allegro MicroSystems, Inc. assumes no responsibility for its use; nor for any infringements of patents or other rights of third parties which may result from its use. A TM MicroSystems, Inc. 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 |
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