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MSU ECE 4512 - BiMOS II UNIPOLAR STEPPER MOTOR TRANSLATOR DRIVER

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5804BiMOS II UNIPOLARSTEPPER-MOTORTRANSLATOR/DRIVERCombining low-power CMOS logic with high-current and high-voltage bipolar outputs, the UCN5804B and UCN5804LB BiMOS IItranslator/drivers provide complete control and drive for a four-phaseunipolar stepper-motor with continuous output current ratings to 1.25 Aper phase (1.5 A startup) and 35 V.The CMOS logic section provides the sequencing logic, DIREC-TION and OUTPUT ENABLE control, and a power-ON reset function.Three stepper-motor drive formats, wave-drive (one-phase), two-phase, and half-step are externally selectable. The inputs are compat-ible with standard CMOS, PMOS, and NMOS circuits. TTL or LSTTLmay require the use of appropriate pull-up resistors to ensure a properinput-logic high.The wave-drive format consists of energizing one motor phase at atime in an A-B-C-D (or D-C-B-A) sequence. This excitation modeconsumes the least power and assures positional accuracy regardlessof any winding inbalance in the motor. Two-phase drive energizes twoadjacent phases in each detent position (AB-BC-CD-DA). Thissequence mode offers an improved torque-speed product, greaterdetent torque, and is less susceptible to motor resonance. Half-stepexcitation alternates between the one-phase and two-phase modes(A-AB-B-BC-C-CD-D-DA), providing an eight-step sequence.The bipolar outputs are capable of sinking up to 1.5 A and with-standing 50 V in the OFF state (sustaining voltages up to 35 V).Ground-clamp and flyback diodes provide protection against inductivetransients. Thermal protection circuitry disables the outputs when thechip temperature is excessive.Both devices are rated for operation over the temperature range of-20°C to +85°C. The UCN5804B is supplied in a 16-pin dual in-lineplastic batwing package with a copper lead frame and heat-sinkabletabs for improved power dissipation capabilities; the UCN5804LB issupplied in a 16-lead plastic SOIC batwing package with a copper leadframe and heat-sinkable tabs.FEATURES■ 1.5 A Maximum Output Current■ 35 V Output Sustaining Voltage■ Wave-Drive, Two-Phase, and Half-Step Drive Formats■ Internal Clamp Diodes■ Output Enable and Direction Control■ Power-ON Reset■ Internal Thermal Shutdown CircuitryBiMOS II UNIPOLARSTEPPER-MOTOR TRANSLATOR/DRIVERAlways order by complete part number, e.g., UCN5804B .Dwg. W-194SUPPLYDIRECTIONOUTPUTENABLEGROUNDGROUNDGROUNDGROUNDSTEP INPUTHALF-STEPONE-PHASEOUTPUTOUTPUTOUTPUTOUTPUTBBDDKCACAKLOGICOE16DDV151413121110987654321ABSOLUTE MAXIMUM RATINGSOutput Voltage, VCE...............................50 VOutput Sustaining Voltage,VCE (sus)............................................35 VOutput Sink Current, IOUT.................... 1.5 ALogic Supply Voltage, VDD....................7.0 VInput Voltage, VIN..................................7.0 VPackage Power Dissipation,PD......................................... See GraphOperating Temperature Range,TA.................................. -20°C to +85°CStorage Temperature Range,TS................................ -55°C to +150°CData Sheet26184.12CNote that the UCN5804B (dual in-line package)and UCN5804LB (small outline IC package) areelectrically identical and share a common pinnumber assignment.5804115 Northeast Cutoff, Box 15036Worcester, Massachusetts 01615-0036 (508) 853-50005804BiMOS II UNIPOLARSTEPPER-MOTORTRANSLATOR/DRIVERTRUTH TABLEDrive Format Pin 9 Pin 10Two-Phase L LOne-Phase H LHalf-Step L HStep-Inhibit H HTYPICAL INPUT CIRCUITDwg. EP-021-4OUTKTYPICAL OUTPUT DRIVERDwg. EP-010-5INVDDCopyright © 1987, 1998, Allegro MicroSystems, Inc.50 75 100 125 150510ALLOWABLE PACKAGE POWER DISSIPATION IN WATTSTEMPERATURE IN °C43225Dwg. GP-049-2R = 6.0°C/WθJTSUFFIX 'B', R = 43°C/WθJASUFFIX 'LB', R = 67°C/WθJA5804BiMOS II UNIPOLARSTEPPER-MOTORTRANSLATOR/DRIVERELECTRICAL CHARACTERISTICS at TA = 25°C, TJ ≤ 150°C, VDD = 4.5 V to 5.5 V(unless otherwise noted). LimitsCharacteristic Symbol Test Conditions Min. Typ. Max. UnitsOutput Leakage Current ICEXVOUT = 50 V — 10 50 µAOutput Sustaining Voltage VCE(sus)IOUT = 1.25 A, L = 3 mH 35 — — VOutput Saturation Voltage VCE(SAT)IOUT = 700 mA — 1.0 1.2 VIOUT = 1 A — 1.1 1.4 VIOUT = 1.25 A — 1.2 1.5 VClamp Diode Leakage Current IRVR = 50 V — 10 50 µAClamp Diode Forward Voltage VFIF = 1.25 A — 1.5 3.0 VInput Current IIN(1)VIN = VDD— 0.5 5.0 µAIIN(0)VIN = 0.8 V — -0.5 -5.0 µAInput Voltage VIN(1)VDD = 5 V 3.5 — 5.3 VVIN(0)-0.3 — 0.8 VSupply Current IDD2 Outputs ON — 20 30 mATurn-Off Delay tON50% Step Inputs to 50% Output — — 10 µsTurn-On Delay tOFF50% Step Inputs to 50% Output — — 10 µsThermal Shutdown Temperature TJ— 165 — °CTIMING CONDITIONSA. Minimum Data Set Up Time . . . . . . . . . . . . . . . . . . . . . . . . 100 nsB. Minimum Data Hold Time . . . . . . . . . . . . . . . . . . . . . . . . . . 100 nsC. Minimum Step Input Pulse Width . . . . . . . . . . . . . . . . . . . . . 3.0 µsDwg. W-110AONE PHASEHALF STEPOUTPUT AOUTPUT BOOUTPUT ENABLEOUTPUT COUTPUT DTWO -PHASE HALF-STEP WAVE DRIVEOUTPUTDISABLEDABCCLOCK115 Northeast Cutoff, Box 15036Worcester, Massachusetts 01615-0036 (508) 853-50005804BiMOS II UNIPOLARSTEPPER-MOTORTRANSLATOR/DRIVERWAVE-DRIVE SEQUENCEHalf Step = L, One Phase = HStep ABCDPOR ON OFF OFF OFF1 ON OFF OFF OFF2 OFF ON OFF OFF3 OFF OFF ON OFF4 OFF OFF OFF ONTWO-PHASE DRIVE SEQUENCEHalf Step = L, One Phase = LStep ABCDPOR ON OFF OFF ON1 ON OFF OFF ON2 ON ON OFF OFF3 OFF ON ON OFF4 OFF OFF ON ONHALF-STEP DRIVE SEQUENCEHalf Step = H, One Phase = LStep ABCDPOR ON OFF OFF OFF1 ON OFF OFF OFF2 ON ON OFF OFF3 OFF ON OFF OFF4 OFF ON ON OFF5 OFF OFF ON OFF6 OFF OFF ON ON7 OFF OFF OFF ON8 ON OFF OFF ONAPPLICATIONS INFORMATIONInternal power-ON reset (POR) circuitryresets OUTPUTA (and OUTPUTD in the two-phase drive format) to the ON state withinitial application of the logic supply voltage.After reset, the circuit then steps according tothe tables.The outputs will advance one sequenceposition on the high-to-low transition of theSTEP INPUT pulse. Logic levels on theHALF-STEP and ONE-PHASE inputs willdetermine the drive format (one-phase, two-phase, or half-step). The DIRECTION pindetermines the rotation sequence of theoutputs. Note that the STEP INPUT must bein the low state when changing the state ofONE-PHASE, HALF-STEP, or DIRECTIONto prevent erroneous stepping.All outputs are disabled (OFF) whenOUTPUT ENABLE is at a logic high. If


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MSU ECE 4512 - BiMOS II UNIPOLAR STEPPER MOTOR TRANSLATOR DRIVER

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