DRV8821 Dual Stepper Motor Controller and Driver

1 ProductFolderSample &BuyTechnicalDocumentsTools &SoftwareSupport &CommunityDRV8821 SLVS912J JANUARY2009 REVISEDJANUARY2016 DRV8821 dual StepperMotorControllerand Driver1 Features3 DescriptionThe DRV8821providesa dual microstepping-capable1 DualPWMM icrosteppingMotorDriversteppermotorcontr oller/driversolutionfor printers, Built-InMicrosteppingIndexersscanners,an dotherofficeautomationequipment Up to Windingapplications. Three-BitWindingCurrentControlAllowsup toTwo the motordriverblocksemploy Low MOSFETOn-ResistanceN-channelpowerMOSFET sconfiguredas an H- SelectableSlowor MixedDecayModesbridgeto drivethe motorwindings. 8-V to 32-VOperatingSupplyVoltageRangeA simplestep/directioninterfaceallowseasy InternalChargePumpfor GateDriveinterfacingto the motorin full-step,half-step, SimpleStep/DirectionInterfacequarter-ste p,or eighthstepmodes,and the selectionof slowor mixeddecaymodes.

2 FullyProtectedAgainstUndervoltage,Overte mperature,and OvercurrentInternalshutdownfunctionsare providedfor overcurrentprotection,short-circuitprote ction, Thermally-EnhancedSurfaceMountPackageund ervoltagelockout,and ApplicationsTheDRV8821is packagedin a 48-pinHTSSOP package(Eco-friendly: RoHS& no Sb/Br). Printers ScannersDeviceInformation(1) OfficeAutomationMachinesPARTNUMBERPACKAG EBODYSIZE(NOM) GamingMachinesDRV8821 HTSSOP(48) x FactoryAutomation(1) For all availablepackages,see the orderableaddendumatthe end of the datasheet. RoboticsSimplifiedSchematic1An IMPORTANTNOTICEat the end of this datasheetaddressesavailability,warranty, changes,use in safety-criticalapplications,intellectual propertymattersand JANUARY2009 Applicationand Pin Configurationand Deviceand Mechanical,Packaging,and RevisionHistoryNOTE:Pagenumbersfor previousrevisionsmay differfrompagenumbersin the (January2014)to RevisionJPage AddedPin Functionstable,ESDR atingstable,ThermalInformationtable,Deta iledDescriptionsection,Applicationand Implementationsection,PowerSupplyRecomme ndationssection,Layoutsection,Deviceand DocumentationSupportsection,andMechanica l,Packaging,and (August2013)to RevisionIPage Changedtypo 2009 2016,TexasInstrumentsIncorporatedProduct FolderLinks.

3 DRV8821123456789101112131415161718192827 26252423222120 ABDECAYAOUT1 VMVMAOUT2 AISENABSTEPABUSM0 ABDIRABVREFBISENCDVREFCDDECAYABENBLnV3P3 BOUT2 BOUT1 CDSTEPCDUSM0 CDDIRCDENBLn4847464544434241403938373635 343332313029 PGNDPGNDPGNDPGNDPGNDPGNDS older thesepins to copperheatsink areaPGNDPGNDPGNDPGNDPGNDVCPCP2CP1 VMDOUT2 DISENDOUT1 VMABUSM1 ABRESETnCISENCOUT2 CDRESETnCOUT1 CDUSM1 PGNDS older thesepins to copperheatsink JANUARY2009 REVISEDJANUARY20165 Pin Configurationand FunctionsDCAP ackage48-PinHTSSOPTop ViewPin FunctionsPINI/O(1)DESCRIPTIONEXTERNALCOM PONENTSOR ,2,Connectall VM pins togetherto motorsupplyvoltage. Motorsupplyvoltage(multiplepins)(4 pins)23, 24 BypasseachVM to GNDwith a F, V regulatoroutputBypassto GNDwith F, , Powerground(multiplepins)Connectall PGND pins to GNDand solderto F capacitorbetweenCP1and CP2CP28 IOVCP9 IOChargepumpstoragecapacitorConnecta F, 16 V ceramiccapacitorto VMMOTORABABSTEP45 IMotorAB step inputRisingedgecausesthe indexerto moveone directioninputLevelsets the directionof microstepmode0 USM0and USM1set the step mode- full step,half step,quarterstep,or microstepmode1 ABENBLn42 IMotorAB enableinputLogichigh to disablemotorAB outputs,logiclow to indexerlogicand disablesthe H-ABRESETn40 IMotorAB resetinputbridgeoutputsfor decaymodeLogiclow for slowdecaymode,high for currentset referenceABVREF17 ISetscurrenttrip output1 Connectto first coil of bipolarsteppermotorAB, or DC output2 AISEN4 BridgeA currentsenseConnectto currentsenseresistorfor bridgeA.

4 (1)Directions:i = input,O = output,OZ = 3-stateoutput,OD = open-drainouput,IO = input/ouputCopyright 2009 2016,TexasInstrumentsIncorporatedSubmitD ocumentationFeedback3 ProductFolderLinks: DRV8821 DRV8821 SLVS912J JANUARY2009 Functions(continued)PINI/O(1)DESCRIPTION EXTERNALCOMPONENTSOR output1 Connectto secondcoil of bipolarsteppermotorAB, or DC output2 BISEN47 BridgeB currentsenseConnectto currentsenseresistorfor step inputRisingedgecausesthe indexerto moveone directioninputLevelsets the directionof microstepmode0 USM0and USM1set the step mode- full step,half step,quarterstep,or microstepmode1 CDENBLn30 IMotorCD enableinputLogichigh to disablemotorCD outputs,logiclow to indexerlogicand disablesthe H-CDRESETn28 IMotorCD resetinputbridgeoutputsfor decaymodeLogiclow for slowdecaymode,high for currentset referenceCDREF18 ISetscurrenttrip output1 Connectto first coil of bipolarsteppermotorCD, or DC output2 CISEN26 BridgeC currentsenseConnectto currentsenseresistorfor output1 Connectto secondcoil of bipolarsteppermotorCD.

5 Or DC output2 DISEN21 BridgeD currentsenseConnectto currentsenseresistorfor (unlessotherwisenoted)(1) (2)MINMAXUNITVMP owersupplyvoltage (3) (peak)Peakmotordriveoutputcurrent,t < 1 sInternallylimitedIOMotordriveoutputcurr ent(4) powerdissipationSeeDissipationRatingsTJO peratingvirtualjunctiontemperature 40150 CTAO peratingambienttemperature 4085 CTstgStoragetemperature 60150 C(1)StressesbeyondthoselistedunderAbsolu teMaximumRatingsmay causepermanentdamageto the stressratingsonly,whichdo not implyfunctionaloperationof the deviceat theseor any otherconditionsbeyondthoseindicatedunder RecommendedOperatingConditions. Exposureto absolute-maximum-ratedconditionsfor extendedperiodsmay affectdevicereliability.(2)All voltagevaluesare with respectto networkgroundterminal.(3)Inputpins may be drivenin this voltagerangeregardlessof presenceor absenceof VM.

6 (4)Powerdissipationand thermallimitsmustbe (HBM),per ANSI/ESDA/JEDECJS-001,all pins(1)2000V(ESD)ElectrostaticdischargeV Chargeddevicemodel(CDM),per JEDEC specificationJESD22-C101,1000all pins(2)(1)JEDEC documentJEP155statesthat 500-VHBM allowssafe manufacturingwith a standardESDcontrolprocess.(2)JEDEC documentJEP157statesthat 250-VCDM allowssafe manufacturingwith a 2009 2016, JANUARY2009 (unlessotherwisenoted)MINNOMMAXUNITVMM otorpowersupplyvoltage832 VIMOTC ontinuousmotordriveoutputcurrent(1) (1)Powerdissipationand thermallimitsmustbe (1)DCA(HTSSOP)UNIT48 PINSR C/WR JC(top)Junction-to-case(top) C/WR JBJunction-to-boardthermalresistance15 C/W C/W C/WR JC(bot)Junction-to-case(bottom) C/W(1)For moreinformationabouttraditionaland new thermalmetrics,see theSemiconductorand IC PackageThermalMetricsapplicationreport, (unlessotherwisenoted)PARAMETERTESTCONDI TIONSMINTYPMAXUNITPOWERSUPPLIESIVMVM operatingsupplycurrentVM= 24 V, no loads58mAIVMSDVM shutdownsupplycurrentVM= 24 V, ABENBLn= CDENBLn= = V100 A(internalpulldowncurrent)

7 OVERTEMPERATUREPROTECTIONtTSDT hermalshutdowntemperatureDie temperature150 CMOTORDRIVERVM= 24 V, IO= A, TJ= 25 FET on resistanceRds(on) (eachindividualFET)VM= 24 V, IO= A, TJ= 85 24 V, IO= A, TJ= 25 FET on resistanceRds(on) (eachindividualFET)VM= 24 V, IO= A, TJ= 85 12 AfPWMM otorPWMfrequency(1)455055kHztBLANKITRIP blankingtime(2) stFOutputfall time50300nstROutputrise time50300ns(1)Factoryoption100 kHz.(2)Factoryoptionsfor s, 5 s or 2009 2016,TexasInstrumentsIncorporatedSubmitD ocumentationFeedback5 ProductFolderLinks:DRV8821xSTEPxDIR, xUSMx23145 ABENBLn& CDENBLn6 DRV8821 SLVS912J JANUARY2009 (continued)overoperatingfree-airtemperat urerange(unlessotherwisenoted) stMDMixeddecaypercentageMeasuredfrombegi nningof PWMcycle75%VREFINPUT/CURRENTCONTROLACCUR ACYIREFxVREF inputcurrentxVREF= V 33 AxVREF= V, derivedfromV3P3; 5%5%71%to 100%current ICHOPC hoppingcurrentaccuracyxVREF= V, derivedfromV3P3.

8 10%10%20%to 56% (unlessotherwisenoted)MINMAXUNIT1fSTEPS tepfrequency200kHz2tWH(STEP)Pulseduratio n, s3tWL(STEP)Pulseduration, s4tSU(STEP)Setuptime,commandto xSTEP rising200ns5tH(STEP)Holdtime,commandto xSTEP rising200ns6tWAKEW akeuptime,SLEEP ninactiveto JATA< 25 CTA= 70 CTA= 85 CABOVETA= 25 CLow-K(1) (2)32 (3) C/W33 mW/ (4) (1)The JEDECLow-Kboardusedto derivethis datawas a 76-mmx 114-mm,2-layer, no backsidecopper.(2)The JEDECLow-Kboardusedto derivethis datawas a 76-mmx 114-mm,2-layer, 25-cm22-ozcopperon backside.(3)The JEDECHigh-Kboardusedto derivethis datawas a 76-mmx 114-mm,4-layer, no backsidecopperandsolid1-ozinternalground plane.(4)The JEDECHigh-Kboardusedto derivethis datawas a 76-mmx 114-mm,4-layer, 25-cm21-ozcopperon backside and TimingDiagram6 SubmitDocumentationFeedbackCopyright 2009 2016, C0 C25 C70 C85 CRdson (m ) Temperature ( C) 8 V24 V27 VC007 C0 C25 C70 C85 CRdson (m ) Temperature ( C) 8 V24 V27 VC008 C0 C25 C70 C85 CCharge Pump Voltage (V) Temperature ( C) 8 V24 V27 VC005 V24 V27 VCharge Pump Voltage (V) Supply Voltage (V) -40 C0 C25 C70 C85 CC006 V24 V27 VSupply Current (mA) Supply Voltage (V) -40 C0 C25 C70 C85 CC002 C0 C25 C70 C85 CSupply Current (mA) Temperature ( C) 8 V24 V27 VC001 JANUARY2009 SupplyCurrentoverTemperatureFigure3.

9 SupplyCurrentoverSupplyVoltageFigure5. ChargePumpVoltageoverSupplyVoltageFigure 4. ChargePumpVoltageoverTemperatureFigure6. LS RDSONAOUT2overTemperatureFigure7. LS RDSONAOUT1overTemperatureCopyright 2009 2016,TexasInstrumentsIncorporatedSubmitD ocumentationFeedback7 C0 C25 C70 C85 CRdson (m ) Temperature ( C) 8 V24 V27 VC009 C0 C25 C70 C85 CRdson (m ) Temperature ( C) 8 V24 V27 VC010 DRV8821 SLVS912J JANUARY2009 (continued)Figure8. HS RDSONAOUT2overTemperatureFigure9. HS RDSONAOUT1overTemperature8 SubmitDocumentationFeedbackCopyright 2009 2016, JANUARY2009 REVISEDJANUARY20167 DRV8821is a dualsteppermotordriversolutionfor applicationsthat requireindependentcontrolof ,a microsteppingindexer, DRV8821can be poweredwith a supplyvoltagebetween8 and 32 V, and is capableofprovidingan outputcurrentup to dependon ambienttemperature,supplyvoltage,and simpleSTEP/DIRinterfaceallowseasyinterfa cingto the internalindexeris abletoexecutehigh-accuracymicrosteppingw ithoutrequiringthe processorto controlthe indexeriscableof full step and half step as well as microsteppingto 1/4 and 1 currentregulationis configurablewith two differentdecaymodes.

10 Slowdecayand mixeddecaymodeusesslowdecayon increasingcurrentstepsand mixeddecayon decreasingcurrentsteps,whileslowdecaymod ewill alwaysuse slowdecayregardlessincreasingor gatedriveto eachFETin all four H-Bridgesis controlledto preventany cross-conduction(shootthroughcurrent) 2009 2016,TexasInstrumentsIncorporatedSubmitD ocumentationFeedback9 ProductFolderLinks: DRV8821 ChargePump andGat e DriveRegulatorThermalShut downAOUT1 AOUT2 BOUT1 BOUT2 GNDABVREF0. 1 F35V+24 StepMotorVMCP1CP2 VCPAISENBISENVCPOCPO scillatorCOUT1 COUT2 DOUT1 DOUT2 StepMotorCI H-b ridgedriver APWM H-bridgedriver BPWM H-bridgedriver CPWM H-bridgedriver DI ndexerLogicABDECAYCDSTEPCDDIRCDENBLnCDUS M0 CDUSM1CD DEC AYABRESETnCDRESETn+24+240. 1 F, 35V VM+24+24 0. 1 F, 35V0. 1 F, 35 VVM+24+24 0. 1 F, 35 VVM+24+24 DRV8821 SLVS912J JANUARY2009 DRV8821containsfour H-bridgemotordriverswith blockdiagramshowingdriversA and B of the motorcontrolcircuitry(as typicallyusedto drivea bipolarsteppermotor)is and D are the sameas A and B (thoughthe Rds(on)of the outputFETsis different).