双极步进电机驱动器有几个组件

摘要：作为其他复杂的步进电机驱动电路的替代方法，这种方法采用了一个小小的，表面贴装的2.8WD类音频放大器，通常驱动4W或8W扬声器。两个内置H桥驱动器输出的双OUTR±±OUTL，直接连接A和B的步进电机绕组。每对带有一个1.22MHz的标称中心频率的PWM信号差Maxim>AppNotes>AmplifierandComparatorCircuitsKeywords:steppermotors,Hbridge,classDamplifiers,differentialPWMOct26,2009APPLICATIONNOTE4469BipolarStepper-MotorDriverhasFewComponentsBy:PhillLeyva,BillQuachAbstract:Asanalternativetotheotherwisecomplexdrivercircuitforasteppermotor,thisapproachemploysatiny,surface-mount2.8WclassDaudioamplifierthatnormallydrives4Wor8Wspeakers.TwointernalH-bridgesdrivetheoutputpairsOUTR±andOUTL±,whichconnectdirectlytotheAandBwindingsofthesteppermotor.EachpaircarriesadifferentialPWMsignalwithanominalcenterfrequencyof1.22MHz.ThisdesignideaappearedintheDecember1,2006issueofEDNmagazine.Bipolar,monofilar-windingsteppe