基于LV8907无传感器三相无刷直流马达控制方案.doc

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1、基于LV8907无传感器三相无刷直流马达控制方案　　OnSemi公司的LV8907是高性能AEC-Q100许可的无传感器三相无刷直流（BLDC）马达控制器，集成了用来驱动外接N-MOSFET的栅极驱动器，两级电荷泵提供各种低RDS（ON）外接N-MOSFET所需的栅极电压，工作结温高达175ºC，工作电压5.5V到20V，主要用在汽车泵（燃料泵，油泵和水泵），风扇（HVAC，散热器，电池冷却，LED头灯冷却）以及白色家电和工业BLDC马达控制。本文介绍了LV8907主要特性，框图，典型应用电路以及评估板LV8907UWGEVK主要特

2、性，电路图和材料清单。　　TheLV8907isahighperformance，AEC-Q100qualified，sensor-lessthree-phaseBLDCmotorcontrollerwithintegratedgatedriversfordrivingexternalN-MOSFETs.Anon-chiptwo-stagechargepumpprovidesrequiredgatevoltageforawiderangeoflowRDS（ON）typeexternalN-MOSFETs.Thedeviceoffer

3、sarichsetofsystemprotecTIonanddiagnosTIcfuncTIonssuchasover-current，over-voltage，short-circuit，under-voltage，over-temperatureandmanymore.Itsupportsopen-loopaswellasclosed-loopspeedcontrolwithuserconfigurablestartup，speedsetTIngandproportional/integral（PI）controlcoeffic

4、ients，makingitsuitableforawiderangeofmotorandloadcombinations.Withabuilt-inlinearregulatorforpoweringexternalcircuits，awatchdogtimer，andaLIN（LocalInterconnectNetwork）transceiver，theLV8907offersaverysmallsystemsolution.TheLV8907storessystemparametersinembeddedone-timepr

5、ogrammable（OTP）non-volatilememoryinadditiontoRAMsystemmemory.AnSPIinterfaceisprovidedforparametersettingandmonitoringthesystemstatus.Withtheoperatingjunctiontemperaturetoleranceupto175ºCandelectricallyLINcompatiblecontrolsignals（PWMandEnable），theLV8907isanidealsolution

6、forstand-aloneBLDCmotorcontrolsystems.　　LV8907主要特性：　　AEC-Q100qualifiedandPPAPcapable.·　　Operatingjunctiontemperatureupto175ºC·　　Operatingvoltagerangefrom5.5Vto20Vwithtolerancefrom4.5Vto40V·　　Embeddedproprietarysensor-lesstrapezoidalandpseudo-sinusoidalcommutation·　　Sup

7、portsopen-loopaswellasclosed-loopspeedcontrol·　　IntegratedgatedriversfordrivingsixN-MOSFETs·　　Two-stagechargepumpforcontinuous100%dutycycleoperation·　　5V/3.3Vregulator，LINtransceiverandWatchdogtimerapplicationsusinganexternalmicrocontroller.　　Configurablespeedsettingsa

8、ndPIcontrolcoefficients·　　Varioussystemprotectionfeaturesincluding：　　Shootthroughprotectionusingconfigurabledead-time