DRV8811 Stepper Motor Controller IC datasheet …

1 8 V to 38 VSTEPDIRHOMEnControllerProtectionStep ADRV8811 ProductFolderOrderNowTechnicalDocumentsT ools &SoftwareSupport &CommunityAn IMPORTANTNOTICEat the end of this datasheetaddressesavailability,warranty, changes,use in safety-criticalapplications,intellectual propertymattersand SEPTEMBER2008 REVISEDAPRIL2017 DRV8811 StepperMotorControllerIC11 Features1 PulseWidthModulation(PWM)MicrosteppingMo torDriver Up to 1/8-StepMicrosteppingIndexer Stepand DirectionControl ProgrammableMixedDecay,Blanking,andOff-T ime Up to Winding Low (HS+LS)MOSFETRDS(on)(25 C) 8-V to 38-VOperatingSupplyVoltageRange Pin-to-PinCompatibleWiththe DRV8818 ThermallyEnhancedSurfaceMountPackage ProtectionFeatures: VM UndervoltageLockout(UVLO) OvercurrentProtection(OCP) ThermalShutdown(TSD)2 Applications Printers Scanners OfficeAutomationMachines GamingMachines FactoryAutomation Robotics3 DescriptionThe DRV8811deviceprovidesan integratedsteppermotordriversolutionfor printers,scanners,and ,as wellas microsteppingindexerlogicto controla outputdriverblockconsistsof N-channelpowerMOSFET sconfiguredas full H-bridgesto simpleSTEP-and-DIRinterfaceallowseasyint erfacingto allowfor configurationof the motorin full-step,half-step,quarter-step,or ,short-circuitprotection,undervoltageloc koutand DRV8811deviceis packagedin a PowerPAD 28-pinHTSSOP packagewith (1)PARTNUMBERPACKAGEBODYSIZE(NOM) DRV8811 HTSSOP(28) x (1) For all availablepackages,see the orderableaddendumatthe end of the SEPTEMBER2008.

2 DRV8811 SubmitDocumentationFeedbackCopyright 2008 2017,TexasInstrumentsIncorporatedTableof Contents1 Pin Configurationand Applicationand Deviceand Mechanical,Packaging,and RevisionHistoryNOTE:Pagenumbersfor previousrevisionsmay differfrompagenumbersin the (January2015)to RevisionJPage Changedthe Addeda row for the thermalpad to thePin Changedmultipleentriesin Addedtwo rowsto Deleted"active" or "inactive" Addedunitsto Equation2 ..12 Addedunitsto Equation3 ..12 Addedunitsto Equation4 ..13 to 1 (November2013)to RevisionIPage ChangedFeatureslist ..1 AddedESDR atingstable,FeatureDescriptionsection,De viceFunctionalModes,Applicationand Implementationsection,PowerSupplyRecomme ndationssection,Layoutsection,Deviceand DocumentationSupportsection,andMechanica l,Packaging,and (May2010)to RevisionHPage ChangedIO(peak)and deletedIOin Changedmaximumdigitalpin Addedparametersto Logic-LevelInputssectionof the VMA2 HOMEn27 SLEEPn3 DIR26 ENABLEn4 AOUT125 AOUT25 DECAY24 CP26 RCA23 CP17 GND22 VCP8 VREF21 GND9 RCB20 VGD10 VCC19 STEP11 BOUT118 BOUT212 USM117 RESETn13 USM016 SRn14 ISENB15 VMBNot to scaleThermal SEPTEMBER2008 REVISEDAPRIL2017 ProductFolderLinks: DRV8811 SubmitDocumentationFeedbackCopyright 2008 2017,TexasInstrumentsIncorporated(1)Dire ctions.

3 I = input,O = output,I/O = input/output,PWR= power5 Pin Configurationand FunctionsPWPP owerPAD Package28-PinHTSSOPWithExposedThermalPad Top ViewPin FunctionsPINTYPE(1) output1. Connectto bipolarsteppermotorwindingAAOUT225 OBridgeA output2. Positivecurrentis AOUT1 AOUT2 BOUT111 OBridgeB output1. Connectto bipolarsteppermotorwindingBBOUT218 OBridgeB output2. Positivecurrentis BOUT1 F capacitorbetweenCP1and F capacitorbetweenCP1and decaymode- see motordriverdescriptionfor a F the directionof to disabledeviceoutputs,logiclow to enableoutputsGND7, 21 whenat homestateof step table,logichigh at otherstatesISENA1 IBridgeA ground/ ISENSE. Connectto currentsenseresistorfor bridgeAISENB14 IBridgeB ground/ ISENSE. Connectto currentsenseresistorfor bridgeBRCA6 IBridgeA blankingand off time parallelresistorand capacitorto GND- see motordriverdescriptionfor detailsRCB9 IBridgeB blankingand off time parallelresistorand capacitorto GND- see motordriverdescriptionfor details4 DRV8811 SLVS865J SEPTEMBER2008 : DRV8811 SubmitDocumentationFeedbackCopyright 2008 2017,TexasInstrumentsIncorporatedPin Functions(continued)PINTYPE(1) indexerlogicand disablesthe to enabledevice,logiclow to , synchronousrectificationis indexerto moveone stepUSM013 IMicrostepmode0.

4 USM0and USM1set the step mode- full step,half step,quarterstep,or eightmicrosteps/stepUSM112 IMicrostepmode1. USM0and USM1set the step mode- full step,half step,quarterstep,or 3-V to 5-V GNDwith a F F ceramiccapacitorto GNDwith a F ceramiccapacitorVMA28 PWRB ridgeA motorsupply(8 V to 38 V). BothVMAand VMBmustbe motorsupply(8 V to 38 V). BothVMAand VMBmustbe windingcurrentsetThermalpad systemgroundwith largecopperplanefor improvedthermaldissipation.(1)Stressesbe yondthoselistedunderAbsoluteMaximumRatin gsmay causepermanentdamageto the stressratingsonly,and do not implyfunctionaloperationof the deviceat theseor any otherconditionsbeyondthoseindicatedunder RecommendedOperatingConditions. Exposureto absolute-maximum-ratedconditionsfor extendedperiodsmay affectdevicereliability.(2)All voltagevaluesare with respectto networkgroundterminal.

5 (3)Powerdissipationand thermallimitsmustbe observed.(4)Transientsof 1 V for less than25 ns are (unlessotherwisenoted)(1) (2) (3)MINMAXUNITP owersupplyvoltagerangeVMA,VMB voltagerangeVI: DIR,DECAY,ENABLEn,HOME,RCA,RCB,RESETn,SL EEPn,SRn,STEP,USM0,USM1 voltagerangeVREF voltagerangeISENA,ISENB(4) voltagerangeAOUT1,AOUT2,BOUT1,BOUT2 + voltagerangeVCP,CP2 +12 VCP1 ,IO(peak)InternallylimitedOperatingvirtu aljunctiontemperaturerange,TJ 40150 COperatingambienttemperaturerange,TA 4085 CStoragetemperaturerange,Tstg 60150 SEPTEMBER2008 REVISEDAPRIL2017 ProductFolderLinks: DRV8811 SubmitDocumentationFeedbackCopyright 2008 2017,TexasInstrumentsIncorporated(1)JEDE C documentJEP155statesthat 500-VHBM allowssafe manufacturingwith a standardESDcontrolprocess.(2)JEDEC documentJEP157statesthat 250-VCDM allowssafe manufacturingwith a (ESD)ElectrostaticdischargeHumanbodymode l(HBM),per ANSI/ESDA/JEDECJS-001(1) 2500 VChargeddevicemodel(CDM),per JEDEC specificationJESD22-C101(2) 1000(1)BothVMxpins mustbe connectedto the (unlessotherwisenoted)MINNOMMAXUNITVVMxM otorpowersupplyvoltagerange(1) CXCX capacitancevalue4706801500pF(1)For moreinformationabouttraditionaland new thermalmetrics,seeSemiconductorand IC (1) DRV8811 UNITPWP(HTSSOP)28 PINSR C/WR JC(top)Junction-to-case(top) C/WR C/W C/W C/WR JC(bot)Junction-to-case(bottom) (unlessotherwisenoted)

6 PARAMETERTESTCONDITIONSMINTYPMAXUNITPOWE RSUPPLIESIVMVM operatingsupplycurrentVM= 35 V, fPWM< 50 < 50 35 V1220 AIVCCQVCC sleepmodesupplycurrent520 ,CURRENTCONTROLACCURACYIVREFVREF inputcurrentVVREF= V 33 A ICHOPC hoppingcurrentaccuracyVVREF= 2 V, 70%to 100%current 5%5%VVREF= 2 V, 20%to 56%current 10%10%LOGIC-LEVELINPUTSVILI nputlow VCCVVIHI nputhigh VCCVIILI nputlow currentVI= VCC 2020 AIIHI nputhigh currentVIN = VCC 2020 ARPUP ullupresistanceENABLEn,RESETn1M RPDP ulldownresistanceDIR,STEP,SLEEPn,USM1,US M0,SRn1M 6 DRV8811 SLVS865J SEPTEMBER2008 : DRV8811 SubmitDocumentationFeedbackCopyright 2008 2017,TexasInstrumentsIncorporatedElectri calCharacteristics(continued)overoperati ngambienttemperaturerange(unlessotherwis enoted)PARAMETERTESTCONDITIONSMINTYPMAXU NIT(1)Not testedin production- guaranteedby voltageIO= 200 VCCVVOHO utputhigh voltageIO= 200 VCCVDECAYINPUTVILI nputlow thresholdvoltageFor fast VCCVVIHI nputhigh thresholdvoltageFor VCCVH-BRIDGEFETSrDS(on)HS FET on resistanceVM= 24 V, IO= A, TJ= 25 VM= 24 V, IO= A, TJ= 85 (on)LS FET on resistanceVM= 24 V, IO= A, TJ= 25 VM= 24 V, IO= A, TJ= 85 2020 AMOTORDRIVERtOFFOff-timeRx = 56 k , Cx = 680 pF303846 stBLANKC urrent-senseblankingtimeRx = 56 k , Cx = 680 pF7009501200nstDTDeadtime(1)SRn= 0100475800nsPROTECTIONCIRCUITSIOCPO vercurrentprotectiontrip (1)

7 Die temperature150160180 CSTEPDIR, USMxSLEEPn, ENABLEn, SEPTEMBER2008 REVISEDAPRIL2017 ProductFolderLinks: DRV8811 SubmitDocumentationFeedbackCopyright 2008 2017, (unlessotherwisenoted)(seeFigure1)MINTYP MAXUNIT1fSTEPS tepfrequency500kHz2tWH(STEP)Pulseduratio n,STEP high1 s3tWL(STEP)Pulseduration,STEPlow1 s4tSU(STEP)Setuptime,commandbeforeSTEP rising200ns5tH(STEP)Holdtime,commandafte rSTEP rising200ns6tWAKEW akeuptime,SLEEP nhigh to STEP inputaccepted1ms7tSLEEPS leeptime,SLEEP nlow to outputsdisabled5 s8tENABLEE nabletime,ENABLE nhigh to outputsenabled20 s9tDISABLED isabletime,ENABLE nlow to outputsdisabled20 s10tRESETRR esetreleasetime,RESET nhigh to outputsenabled5 s11tRESETR esettime,RESET nlow to outputsdisabled5 s(1)Not testedin production- guaranteedby (unlessotherwisenoted)PARAMETERTESTCONDI TIONSMINTYPMAXUNITMOTORDRIVERtOFFOff-tim eRx = 56 k , Cx = 680 pF303846 stBLANKC urrent-senseblankingtimeRx = 56 k , Cx = 680 pF7009501200nstDTDeadtime(1)

8 SRn= 0100475800nsFigure1. TimingDiagramVM (V)RDS(on) HS + LS (m:)-40-20020406080100750800850900950100 010501100115012001250130013501400D0038 V24 V35 VVM (V)RDS(on) HS LS (m:)691215182124273033366007008009001000 110012001300140015001600D004 40 qC 0 qC 25 qC 85 qCVM (V)IVM (mA) V24 V35 VVM (V)IVMQ (mA)-40-200204060801000123456D0028 V24 V35 V8 DRV8811 SLVS865J SEPTEMBER2008 : DRV8811 SubmitDocumentationFeedbackCopyright 2008 2017, IVMvs VMFigure3. IVMQvs VMFigure4. rDS(on)HS and LS vs VMFigure5. rDS(on)HS and LS vs SEPTEMBER2008 REVISEDAPRIL2017 ProductFolderLinks: DRV8811 SubmitDocumentationFeedbackCopyright 2008 2017,TexasInstrumentsIncorporated7 DRV8811deviceis a highlyconfigurable,integratedmotordriver solutionfor H-bridges,currentsenseandregulationcircu itry,anda be poweredwith a supplyvoltagebetween8 V and 38 V and is capableof providinganoutputcurrentup to A simpleSTEPand DIR interfaceallowsfor easyinterfacingto the internalindexeris abletoexecutehigh-accuracymicrosteppingw ithoutrequiringthe controllerto managethe currentregulationis highlyconfigurable,withthreedecaymodesof fast,slow,andmixeddecay,whichcan be selecteddependingon the DRV8811devicealsoprovidesconfigurablebla nking,off time,and mixeddecay.

9 In orderto adjustto a widerangeof low-powersleepmodeis incorporatedwhichallowsfor minimalpowerconsumptionwhenthe systemis LogicRegulator andReferencesLow-Side GateDriveVREFVCCVCCVCCT hermalShut-downMotor Driver BMotor Driver AChargePumpISENBBOUT2 BOUT1 VMBISENAAOUT2 AOUT1 VMAVCPCP2CP1 VMVMHS GateDriveLS GateDriveVMVM++--StepperMotor+VGDVMLS GateDriveDECAYVCCRCARCBC opyright 2017, Texas Instruments Incorporated10 DRV8811 SLVS865J SEPTEMBER2008 : DRV8811 SubmitDocumentationFeedbackCopyright 2008 2017, , blockdiagramof the motorcontrolcircuitryis shownin /IndexerLogicDECAYRCBRCAVGDVGD++ SEPTEMBER2008 REVISEDAPRIL2017 ProductFolderLinks: DRV8811 SubmitDocumentationFeedbackCopyright 2008 2017,TexasInstrumentsIncorporatedFeature Description(continued)Figure6. PWMchoppingcurrentis set by a comparator,whichcomparesthe voltageacrossa current-senseresistor,multipliedby a factorof 8, with a referencevoltageis inputfromthe VREFpin.

10 The full-scale(100%)choppingcurrentis calculatedas follows:BLANKt(ns) 1400 ( ) C (nF)=W OFFt( s) R ( ) C (nF)m=W VREFCHOPSENSEV(V)I(A)8 R( )= W12 DRV8811 SLVS865J SEPTEMBER2008 : DRV8811 SubmitDocumentationFeedbackCopyright 2008 2017,TexasInstrumentsIncorporatedFeature Description(continued)(1)Example:If a senseresistoris usedandthe VREFpin is V, the full-scale(100%) V / (8 ) = referencevoltageis alsoscaledby an internalDACthat allowstorquecontrolfor fractionalsteppingof abipolarsteppermotor,as describedin windingis activated,the currentthroughit risesuntil it reachesthe choppingcurrentthresholddescribedpreviou sly;thenthe currentis switchedoff for a off-timeis determinedby the valuesof aresistorandcapacitorconnectedto the RCA(for bridgeA) andRCB(for bridgeB) :(2)To avoidfalselytrippingon transientcurrentswhenthe windingis first activated,a blankingperiodis usedimmediatelyafterturningon the FETs,duringwhichthe stateof the current-sensecomparatoris is determinedby the valueof the capacitorconnectedto the RCxpin and is approximatedby:(3) ,the H-bridgeis enabledto drivethroughthe motorwindinguntil the PWMcurrentchoppingthresholdis shownin Figure7, Item1.