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1、DRVSLVS997C - OCTOBER 2009 一 REVISED SEPTEMBER 2010Jtu Texas7 InstrumentsCopyright ? 2009 - 2010, Texas Instruments IncorporatedDRVSLVS997C - OCTOBER 2009 一 REVISED SEPTEMBER 2010Copyright ? 2009 - 2010, Texas Instruments IncorporatedDRVSLVS997C - OCTOBER 2009 一 REVISED SEPTEMBER 2010DUAL-BRIDGMOTOC
2、ONTROLLERCheck for Samples: DRV8812APPLICATIONS? Automatic Teller Machines ? Money Handling Machines ? Video Security Cameras? Prin ters? ScannersOffice Automation Machines Gaming MachinesFactory AutomationRoboticsFEATURES? Dual-H-Bridge Current-ControlMotor Driver-Capable of Driving a Bipolar Stepp
3、er or Two DC Motors-Two-Bit Win di ng Curre nt Con trol Allows Up to Four Current Levels-Low MOSFET On-Resistanee?1.6-A Maximum Drive Current at 24 V, 25C? Built-In 3.3-V Referenee Output? Industry-StandardParallel Digital ControlIn terface? 8-V to 45-V Operating Supply Voltage Range? Thermally Enha
4、nced Surface Mount PackageDESCRIPTIONThe DRV8812 provides an integrated motor driver solution for printers, scanners, and other automated equipment applications. The device has two H-bridge drivers, and can drive a bipolar stepper motor or two DC motors. The output driver block for each con sists of
5、 N-cha nnel power MOSFET s con figured as full H-bridges to drive the motor windings. The DRV8812 is capable of driving up to 1.6-A of output current (with proper heatsinking, at 24 V and 25 C).A simple parallel digital con trol in terface is compatible with in dustry-sta ndard devices. Decay mode i
6、s programmable.Internal shutdow n functions are provided for over curre nt protect ion, short circuit protect ion, un der voltage lockout and overtemperature.The DRV8812 is available in a 28-pin HTSSOP package with PowerPAD? (Eco-friendly: RoHS & no Sb/Br).ORDERING INFORMATION (1)TaPACKAGE(2)ORDERAB
7、LE PART NUMBERTOP-SIDE MARKING-40Cto85CPowerPAD? (HTSSOP) - PWPReel of 2000DRV8812PWPR8812(1) For the most current packaging and ordering information, see the Package Option Addendum at the end of this document, or see the TI web site at .(2) Package drawings, thermal data, and symbolization are av
8、ailable at .Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.PowerPAD is a trademark of Texas Instruments.PRODUCTION DATA in
9、formation is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not n ecessarily in elude testi ng of all parameters.Copyright ? 2009 - 2010, Texas Instruments IncorporatedTkxASInstrumentsDRV8812SLVS
10、997C 一 OCTOBER 2009 一 REVISED SEPTEMBER #Submit Documentation FeedbackCopyright ? 2009 - 2010, Texas Instruments IncorporatedProduct Folder Link(s): DRV8812TkxASInstrumentsDRV8812SLVS997C 一 OCTOBER 2009 一 REVISED SEPTEMBER 3.3V3.3VVMIn ternalRefere nee &RegsThermalShut downV3P3OUTBPHASEAVREFBVREFAPH
11、ASEAENBLAI0AI1BENBLBI0BI1DECAY nRESETnSLEEPnFAULTCon trolLogicDEVICE INFORMATIONFunctional Block DiagramInt. VCCLS GateDriveAOUT2ISENAMotorDriver AVMBBOUT1MotorDriver BBOUT2GNDISENBrrooe；-#Submit Documentation FeedbackCopyright ? 2009 - 2010, Texas Instruments IncorporatedProduct Folder Link(s): DRV
12、8812IfexAS InstrumentsDRVSLVS997C - OCTOBER 2009 一 REVISED SEPTEMBER 2010Table 1. TERMINAL FUNCTIONSNAMEPINI/OThe JEDEC Low-K board used to derive this data was a 76-mm x 114-mm, 2-layer, 1.6-mm thick PCB with no backside copper.DESCRIPTIONEXTERNAL COMPONENTS OR CONNECTIONSPOWER AND GROUNDGND14, 28-
13、Device groundVMA4-Bridge A power supplyConnect to motor supply (8 - 45 V). Both pinsVMB11-Bridge B power supplymust be connected to same supply.V3P3OUT15O3.3-V regulator outputBypass to GND with a 0.47-mF 6.3-V ceramic capacitor. Can be used to supply VREF.CP11IOCharge pump flying capacitorConnect a
14、 0.01- mF 50-V capacitor betweenCP22IOCharge pump flying capacitorCP1 and CP2.VCP3IOHigh-side gate drive voltageConnect a 0.1-mF 16-V ceramic capacitor to VM.CONTROLAENBL21IBridge A enableLogic high to enable bridge AAPHASE20IBridge A phase (direction)Logic high sets AOUT1 high, AOUT2 lowAI024IBridge A current setSets bridge A current: 00 = 100%, 01 = 71%, 10 = 38%, 11 =0AI125IBENBL22IBridge B enableLogic high to enable bridge BBPHASE23IBridge B phase (direction)
