步进电机驱动芯片AMIS

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1、AMIS-30512Micro-SteppingMotorDriverIntroductionTheAMIS−30512isamicro−steppingsteppermotordriverforbipolarsteppermotors.ThechipisconnectedthroughI/OpinsandaSPIinterfacewithanexternalmicrocontroller.Ithasanon−chipvoltageregulator,reset−outputandwatchdogreset,abletosuppl

2、yhttp://onsemi.comperipheraldevices.TheAMIS−30512containsacurrent−translationtableandtakesthenextmicro−stepdependingontheclocksignalonthe“NXT”inputpinandthestatusofthe“DIR”(=direction)registerPINASSIGNMENTorinputpin.Thechipprovidesaso−called“speedandloadangle”output.T

3、hisallowsthecreationofstalldetectionalgorithmsandDOTSTOcontrolloopsbasedonload−angletoadjusttorqueandspeed.ItisVDDPOR/WDusingaproprietaryPWMalgorithmforreliablecurrentcontrol.GNDVBBDIMOTXPTheAMIS−30512isimplementedinI2T100technology,enablingAMIS30512CLKGNDbothhigh−vol

4、tageanalogcircuitryanddigitalfunctionalityontheNXTMOTXNsamechip.ThechipisfullycompatiblewiththeautomotivevoltageDIRMOTYNrequirements.ERRGNDTheAMIS−30512isideallysuitedforgeneral−purposestepperSLAMOTYPmotorapplicationsintheautomotive,industrial,medical,andmarineCPNVBBe

5、nvironment.CPPCSVCPCLRKeyFeatures•DualH−Bridgefor2−phaseStepperMotors(TopView)•ProgrammablePeak−currentupto800mAUsinga5−bitCurrentDAC•On−chipCurrentTranslatorORDERINGINFORMATION•SPIInterfaceDevicePackageShipping•SpeedandLoadAngleOutputAMIS30512SOIC24Tape&Reel•SevenSte

6、pModesfromFull−stepupto32Micro−steps•FullyIntegratedCurrent−sense•PWMCurrentControlwithAutomaticSelectionofFastandSlowDecay•LowEMCPWMwithSelectableVoltageSlopes•ActiveFly−backDiodes•FullOutputProtectionandDiagnosis•ThermalWarningandShutdown•Compatiblewith3.3VMicrocont

7、rollers,5VTolerantInputs•Integrated5VRegulatortoSupplyExternalMicrocontroller•IntegratedResetFunctiontoResetExternalMicrocontroller•IntegratedWatchdogFunction©SemiconductorComponentsIndustries,LLC,20081PublicationOrderNumber:September,2008−Rev.1AMIS−30512/DAMIS−30512T

8、ableofContentsPageIntroduction.......................................1KeyFeatures.....................................1Order