L6208中文资料

1/27L6208September2003■OPERATINGSUPPLYVOLTAGEFROM8TO52V■5.6AOUTPUTPEAKCURRENT(2.8ARMS)■RDS(ON)0.3ΩTYP.VALUE@Tj=25°C■OPERATINGFREQUENCYUPTO100KHz■NONDISSIPATIVEOVERCURRENTPROTECTION■DUALINDEPENDENTCONSTANTtOFFPWMCURRENTCONTROLLERS■FAST/SLOWDECAYMODESELECTION■FASTDECAYQUASI-SYNCHRONOUSRECTIFICATION■DECODINGLOGICFORSTEPPERMOTORFULLANDHALFSTEPDRIVE■CROSSCONDUCTIONPROTECTION■THERMALSHUTDOWN■UNDERVOLTAGELOCKOUT■INTEGRATEDFASTFREEWHEELINGDIODESTYPICALAPPLICATIONS■BIPOLARSTEPPERMOTORDESCRIPTIONTheL6208isaDMOSFullyIntegratedStepperMotorDriverwithnon-dissipativeOvercurrentProtection,realizedinMultiPower-BCDtechnology,whichcom-binesisolatedDMOSPowerTransistorswithCMOSandbipolarcircuitsonthesamechip.Thedevicein-cludesallthecircuitryneededtodriveatwo-phasebipolarsteppermotorincluding:adualDMOSFullBridge,theconstantofftimePWMCurrentControllerthatperformsthechoppingregulationandthePhaseSequenceGenerator,thatgeneratesthesteppingsequence.AvailableinPowerDIP24(20+2+2),PowerSO36andSO24(20+2+2)packages,theL6208featuresanon-dissipativeovercurrentprotec-tiononthehighsidePowerMOSFETsandthermalshutdown.BLOCKDIAGRAMGATELOGICSTEPPINGSEQUENCEGENERATIONOVERCURRENTDETECTIONOVERCURRENTDETECTIONGATELOGICVCPVBOOTENCONTROLCW/CCWVREFAVBOOT5V10VVSAVSBOUT1AOUT2AOUT1BOUT2BSENSEACHARGEPUMPVOLTAGEREGULATORONESHOTMONOSTABLEMASKINGTIMETHERMALPROTECTIONVBOOTVBOOTOCDBOCDA10V10VBRIDGEASENSECOMPARATORBRIDGEBD01IN1225RCA+-SENSEBVREFBRCBHALF/FULLCLOCKRESETPWMORDERINGNUMBERS:L6208N(PowerDIP24)L6208PD(PowerSO36)L6208D(SO24)PowerDIP24(20+2+2)PowerSO36SO24(20+2+2)DMOSDRIVERFORBIPOLARSTEPPERMOTORL62082/27ABSOLUTEMAXIMUMRATINGSRECOMMENDEDOPERATINGCONDITIONSSymbolParameterTestconditionsValueUnitVSSupplyVoltageVSA=VSB=VS60VVODDifferentialVoltagebetweenVSA,OUT1A,OUT2A,SENSEAandVSB,OUT1B,OUT2B,SENSEBVSA=VSB=VS=60V;VSENSEA=VSENSEB=GND60VVBOOTBootstrapPeakVoltageVSA=VSB=VSVS+10VVIN,VENInputandEnableVoltageRange-0.3to+7VVREFA,VREFBVoltageRangeatpinsVREFAandVREFB-0.3to+7VVRCA,VRCBVoltageRangeatpinsRCAandRCB-0.3to+7VVSENSEA,VSENSEBVoltageRangeatpinsSENSEAandSENSEB-1to+4VIS(peak)PulsedSupplyCurrent(foreachVSpin),internallylimitedbytheovercurrentprotectionVSA=VSB=VS;tPULSE1ms7.1AISRMSSupplyCurrent(foreachVSpin)VSA=VSB=VS2.8ATstg,TOPStorageandOperatingTemperatureRange-40to150°CSymbolParameterTestConditionsMINMAXUnitVSSupplyVoltageVSA=VSB=VS852VVODDifferentialVoltageBetweenVSA,OUT1A,OUT2A,SENSEAandVSB,OUT1B,OUT2B,SENSEBVSA=VSB=VS;VSENSEA=VSENSEB52VVREFA,VREFBVoltageRangeatpinsVREFAandVREFB-0.15VVSENSEA,VSENSEBVoltageRangeatpinsSENSEAandSENSEB(pulsedtWtrr)(DC)-6-161VVIOUTRMSOutputCurrent2.8ATjOperatingJunctionTemperature-25+125°CfswSwitchingFrequency100KHz3/27L6208THERMALDATAPINCONNECTIONS(TopView)(5)Theslugisinternallyconnectedtopins1,18,19and36(GNDpins).SymbolDescriptionPowerDIP24SO24PowerSO36UnitRth-j-pinsMaximumThermalResistanceJunction-Pins1814-°C/WRth-j-caseMaximumThermalResistanceJunction-Case--1°C/WRth-j-amb1MaximumThermalResistanceJunction-Ambient(1)(1)Mountedonamulti-layerFR4PCBwithadissipatingcoppersurfaceonthebottomsideof6cm2(withathicknessof35μm).4351-°C/WRth-j-amb1MaximumThermalResistanceJunction-Ambient(2)(2)Mountedonamulti-layerFR4PCBwithadissipatingcoppersurfaceonthetopsideof6cm2(withathicknessof35μm).--35°C/WRth-j-amb1MaximumThermalResistanceJunction-Ambient(3)(3)Mountedonamulti-layerFR4PCBwithadissipatingcoppersurfaceonthetopsideof6cm2(withathicknessof35μm),16viaholesandagroundlayer.--15°C/WRth-j-amb2MaximumThermalResistanceJunction-Ambient(4)(4)Mountedonamulti-layerFR4PCBwithoutanyheatsinkingsurfaceontheboard.587762°C/WGNDGNDOUT1BRCBSENSEBHALF/FULLVREFB132456789CONTROLVBOOTENOUT2BVSBGNDGND19181716151314D99IN10831011122423222120CLOCKCW/CCWSENSEARCAOUT1AVSAOUT2AVCPRESETVREFAGNDN.C.N.C.VSARCAOUT1AN.C.N.C.N.C.N.C.N.C.OUT1BRCBN.C.VSBN.C.N.C.GND1816171565432212231323335343620119GNDGNDD99IN1084CLOCKSENSEACW/CCWSENSEBHALF/FULLVREFB987282930VREFACONTROL1027OUT2ARESETVCPENOUT2BVBOOT141211232526N.C.N.C.1324PowerDIP24/SO24PowerSO36(5)L62084/27PINDESCRIPTIONPACKAGENameTypeFunctionSO24/PowerDIP24PowerSO36PIN#PIN#110CLOCKLogicInputStepClockinput.Thestatemachinemakesonesteponeachrisingedge.211CW/CCWLogicInputSelectsthedirectionoftherotation.HIGHlogiclevelsetsclockwisedirection,whereasLOWlogiclevelsetscounterclockwisedirection.Ifnotused,ithastobeconnectedtoGNDor+5V.312SENSEAPowerSupplyBridgeASourcePin.ThispinmustbeconnectedtoPowerGroundthroughasensingpowerresistor.413RCARCPinRCNetworkPin.AparallelRCnetworkconnectedbetweenthispinandgroundsetstheCurrentControllerOFF-TimeoftheBridgeA.515OUT1APowerOutputBridgeAOutput1.6,7,18,191,18,19,36GNDGNDGroundterminals.InPowerDIP24andSO24packages,thesepinsarealsousedforheatdissipationtowardthePCB.OnPowerSO36packagetheslugisconnectedtothesepins.822OUT1BPowerOutputBridgeBOutput1.924RCBRCPinRCNetworkPin.AparallelRCnetworkconnectedbetweenthispinandgroundsetstheCurrentControllerOFF-TimeoftheBridgeB.1025SENSEBPowerSupplyBridgeBSourcePin.ThispinmustbeconnectedtoPowerGroundthroughasensingpowerresistor.1126VREFBAnalogInputBridgeBCurrentContr