DC Motor Driver IC (Rev. D) - TI.com

1 To 45 VDRV8840H-Bridge Motor DriverENBLPHASEnFAULTC ontrollerCurrent ControlCurrent Control5 ADecay Mode+-ProductFolderSample &BuyTechnicalDocumentsTools &SoftwareSupport &CommunityDRV8840 SLVSAB7D MAY2010 REVISEDDECEMBER2015 DRV8840DC MotorDriverIC1 Features3 DescriptionTheDRV8840providesan integratedmotordriver1 SingleH-BridgeCurrent-ControlMotorDriver solutionfor printers,scanners,and otherautomated devicehas one H-bridge Five Bit CurrentControlAllowsup to 32 Currentdriver,and is intendedto driveone DC eachconsistsof N-channelpowerMOSFET sconfiguredas full H-bridgesto drive Low MOSFETRDS(on) (HS + LS)the DRV8840can supplyup to 5-A MaximumDriveCurrentat 24 V, TA= 25 C5-Apeakor (withproper 24 V and 25 C). ParallelDigitalControlInterfaceA simpleparalleldigitalcontrolinterfaceis compatible allowbrakingor coastingof the ProtectionFeatures:motorwhendisabled.

2 OvercurrentProtection(OCP)Internalshutdo wnfunctionsareprovidedfor ThermalShutdown(TSD)overcurrentprotectio n,short-circuitprotection, VM UndervoltageLockout(UVLO)undervoltageloc kout,and overtemperature. FaultConditionIndicationPin (nFAULT)TheDRV8840is availablein a 28-pinHTSSOP packagewith PowerPAD (Eco-friendly:RoHS& no2 ApplicationsSb/Br). PrintersDeviceInformation(1) ScannersPARTNUMBERPACKAGEBODYSIZE(NOM) OfficeAutomationMachinesDRV8840 HTSSOP(28) GamingMachines(1) For all availablepackages,see the orderableaddendumat FactoryAutomationthe end of the datasheet. RoboticsSimplifiedSchematic1An IMPORTANTNOTICEat the end of this datasheetaddressesavailability,warranty, changes,use in safety-criticalapplications,intellectual propertymattersand MAY2010 Contents1 Applicationand Pin Configurationand Deviceand Mechanical,Packaging,and RevisionHistoryNOTE:Pagenumbersfor previousrevisionsmay differfrompagenumbersin the (August2013)to RevisionDPage AddedPinConfigurationandFunctionssection ,ESDR atingstable,FeatureDescriptionsection,De viceFunctionalModes,ApplicationandImplem entationsection,PowerSupplyRecommendatio nssection,Layoutsection,DeviceandDocumen tationSupportsection,andMechanical,Packa ging, AddedMIN valuefor ISENSE xrow from V to V.

3 42 SubmitDocumentationFeedbackCopyright 2010 2015,TexasInstrumentsIncorporatedProduct FolderLinks:DRV8840123456789101112131415 16171819282726252423222120 GND(PPAD) MAY2010 REVISEDDECEMBER20155 Pin Configurationand FunctionsPWPP ackage28-PinHTSSOPTop ViewPin FunctionsPINEXTERNALCOMPONENTSI/O(1)DESC RIPTIONOR , 28 DevicegroundConnectto motorsupply( - 45 V). BothVM4, 11 BridgeA powersupplypins mustbe connectedto GNDwith a F, be usedto F 50-VcapacitorbetweenCP1and F 16-VceramiccapacitorandVCP3 IOHigh-sidegatedrivevoltagea 1-M resistorto sets OUT1high, (direction) to a percentageof full-I225 ICurrentset = brake(slowdecay),high = coast(fastDECAY19 IDecay(brake)modedecay).Internalpulldown and logicandnRESET16 IResetinputdisablesthe to enabledevice,logiclow to ,13 ICurrentset referenceinputBothpins mustbe connectedtogetheron thePCB.

4 (1)Directions:I = input,O = output,OZ = tri-stateoutput,OD = open-drainoutput,IO = input/outputCopyright 2010 2015,TexasInstrumentsIncorporatedSubmitD ocumentationFeedback3 ProductFolderLinks:DRV8840 DRV8840 SLVSAB7D MAY2010 Functions(continued)PINEXTERNALCOMPONENT SI/O(1)DESCRIPTIONOR whenin fault conditionnFAULT18 ODFault(overtemperature,overcurrent)OUTP UTC onnectto , 9 IOBridgeground/ Isensemustbe connectedtogetheron the mustbeOUT15, 10 OBridgeoutput1connectedtogetheron the mustbeOUT27, 8 OBridgeoutput2connectedtogetheron the (unlessotherwisenoted)(1)(2)MINMAXUNITVM xPowersupplyvoltage voltage voltage(3) ,t < 1 SInternallylimitedAContinuousmotordriveo utputcurrent(4)05 AContinuoustotal powerdissipationSeeThermalInformationTJO peratingvirtualjunctiontemperature 40150 CTAO peratingambienttemperature 4085 CTstgStoragetemperature 60150 C(1)

5 StressesbeyondthoselistedunderAbsoluteMa ximumRatingsmay causepermanentdamageto the stressratingsonly,and functionaloperationof the deviceat theseor any otherconditionsbeyondthoseindicatedunder RecommendedOperatingConditionsis not absolute maximum ratedconditionsfor extendedperiodsmay affectdevicereliability.(2)All voltagevaluesare with respectto networkgroundpin.(3)Transientsof 1 V for less than25 ns are acceptable.(4)Powerdissipationand thermallimitsmustbe (HBM),per ANSI/ESDA/JEDECJS-001,all pins(1) 2000V(ESD)ElectrostaticdischargeVCharged devicemodel(CDM),per JEDEC specificationJESD22-C101,all 500pins(2)(1)JEDEC documentJEP155statesthat 500-VHBM allowssafe manufacturingwith a standardESDcontrolprocess.(2)JEDEC documentJEP157statesthat 250-VCDM allowssafe manufacturingwith a (unlessotherwisenoted)MINMAXUNITVMM otorpowersupplyvoltage(1) (2) current01mAfPWME xternallyappliedPWMfrequency0100kHz(1)Al l VMpins mustbe connectedto the samesupplyvoltage.

6 (2)Operationalat VREF between0 V and 1 V, but accuracyis 2010 2015, MAY2010 (1)PWP(HTSSOP)UNIT28 PINSR C/WR JC(top)Junction-to-case(top) C/WR C/W C/W C/WR JC(bot)Junction-to-case(bottom) C/W(1)For moreinformationabouttraditionaland new thermalmetrics,see theSemiconductorandICPackageThermalMetri csapplicationreport, 2010 2015,TexasInstrumentsIncorporatedSubmitD ocumentationFeedback5 ProductFolderLinks:DRV8840 DRV8840 SLVSAB7D MAY2010 (unlessotherwisenoted)PARAMETERTESTCONDI TIONSMINTYPMAXUNITPOWERSUPPLIESIVMVM operatingsupplycurrentVM= 24 V, fPWM< 50 kHz58mAIVMQVM sleepmodesupplycurrentVM= 24 V1020 AVUVLOVM 0 to 1 currentVIN = 0 2020 AIIHI nputhigh currentVIN = V33100 ARPDI nternalpulldownresistance100k nFAULTOUTPUT(OPEN-DRAINOUTPUT)VOLO utputlow voltageIO= 5 leakagecurrentVO= V1 ADECAYINPUTVILI nputlow thresholdvoltageFor slowdecay(brake) thresholdvoltageFor fast decay(coast)mode2 VIINI nputcurrent 40 ARPUI nternalpullupresistance130k RPDI nternalpulldownresistance80k H-BRIDGEFETSVM= 24 V, IO= 1 A, TJ= 25 (ON)HS FET on resistance VM= 24 V, IO= 1 A, TJ= 85 24 V, IO= 1 A, TJ= 25 (ON)

7 LS FET on resistance VM= 24 V, IO= 1 A, TJ= 85 4040 stRRisetime30200nstFFall time30200nsPROTECTIONCIRCUITSIOCPO vercurrentprotectiontrip level6 AtTSDT hermalshutdowntemperatureDie temperature150160180 CCURRENTCONTROLIREFVREF inputcurrentVREF= V 33 AVTRIPISENSE trip voltageVREF= V, 100%currentsetting635660685mVVREF= V, 5% currentsetting 25%25%VREF= V, 10%- 34%currentsetting 15%15%Currenttrip accuracy ITRIP(relativeto programmedvalue)VREF= V, 38%- 67%currentsetting 10%10%VREF= V, 71%- 100%currentsetting 5%5%AISENSEC urrentsenseamplifiergainReferenceonly5V/ V6 SubmitDocumentationFeedbackCopyright 2010 2015,TexasInstrumentsIncorporatedProduct FolderLinks:DRV8840150200250300350400813 182328333843 RDS(ON) HS + LS (m ) V(VMx) (V) -40 C25 C85 C125 CC001 150175200225250275300325350 50 25 0255075100125 RDS(ON) HS + LS (m ) TA ( C) 8 V24 V45 VC002 V(VMx) (V)IVM (mA) (VMx) (V)IVMQ (PA) MAY2010 IVMxvs V(VMx)Figure2.

8 IVMxQvs V(VMx)Figure4. RDS(ON)vs TemperatureFigure3. RDS(ON)vs V(VMx)Copyright 2010 2015,TexasInstrumentsIncorporatedSubmitD ocumentationFeedback7 ProductFolderLinks:DRV8840 DRV8840 SLVSAB7D MAY2010 DRV8840is an integratedmotordriversolutionfor printers,scanners,and deviceintegratesa singleNMOSH-bridge,chargepump,currentsen se,currentregulation, DRV8828can be poweredfroma V to 45 V, and iscapableof providinga continuousoutputcurrentup to 5 simplePHASE/ENBL interfaceallowsfor easyinterfacingto an 5 bit currentcontrolschemeallowsfor up to 32 currentregulationmethodis adjustablebetweenslowandfast deviceto monitorand protectagainstovercurrent,undervoltage,a ndovertemperaturefaultswhichare all reportedthrougha fault indicationpin (nFAULT).A low powersleepmodeisintegratedwhichallowsthe systemto lowerpowerconsumptionwhennot drivingthe 2010 2015,TexasInstrumentsIncorporatedProduct FolderLinks:DRV8840 GNDGNDPPADnFAULTnSLEEPnRESETDECAYI4I3I2I 0 ENBLPHASEC ontrolLogic/IndexerI1 InternalVCCLow DriverChargePumpISENOUT2 OUT2 OUT1 OUT1 VMVCPCP2CP1 VMVMVMHS GateDriveLS GateDriveVM+-StepperMotor+AdditionalBulk CapBDCVM+ MAY2010 DRV8840devicecontainsone H-bridgemotordriverwith blockdiagramofthe motorcontrolcircuitryis shownin 2010 2015,TexasInstrumentsIncorporatedSubmitD ocumentationFeedback9 ProductFolderLinks:DRV8840 OUT1 OUT2 DCMVMISENPHASEPre-driveVCP, VGDVM+-PWMVREFOCPOCPDECAYDACA = 5 ENBLI[4:0]5 DRV8840 SLVSAB7D MAY2010 (continued)Figure5.

9 MotorControlCircuitryThereare multipleVM, ISEN,OUT,and like-namedpins mustbe connectedtogetheron the PHASE inputpin controlsthe directionof currentflowthroughthe H-bridge,and hencethe directionofrotationof a DC ENBL inputpin enablesthe H-bridgeoutputswhenactivehigh,and can alsobeusedfor PWMspeedcontrolof the the stateof the DECAYpin selectsthe behaviorof thebridgewhenENBL= 0, allowingthe selectionof slowdecay(brake)or fast decay(coast).Table1 H-BridgeLogicDECAYENBLPHASEOUT1 OUT200 XLL10 XZZX11 HLX10 LHThe controlinputshaveinternalpulldownresisto rsof approximately100 k . maximumcurrentthroughthe motorwindingis regulatedby a fixed-frequencyPWMcurrentregulation, H-bridgeis enabled,currentrisesthroughthe windingat a rate dependenton theDC voltageand inductanceof the currenthits the currentchoppingthreshold,the bridgedisablesthe currentuntil the beginningof the next DC motors,currentregulationis usedto limit the start-upand stall currentof the providingan externalPWMsignalto the the currentregulationfeatureis not needed,it can be disabledby connectingthe ISENSE pinsdirectlytogroundand the VREF pins to PWMchoppingcurrentis set by a comparatorwhichcomparesthe voltageacrossa currentsenseresistorconnectedto the ISENpin, multipliedby a factorof 5, with a referencevoltageis inputfromthe VREFpin.

10 And is scaledby a 5-bitDACthat allowscurrentsettingsof zeroto 100%in an 2010 2015,TexasInstrumentsIncorporatedProduct FolderLinks:DRV8840 REFXCHOPISENSEVI5 R MAY2010 REVISEDDECEMBER2015 The full-scale(100%)choppingcurrentis calculatedin Equation1.(1)Example:If a senseresistoris usedand the VREF xpin is V, the full-scale(100%)choppingcurrentwill V / (5 ) = 2 inputpins (I0 - I4) are usedto scalethe currentin the bridgeas a percentageof the full-scalecurrentset bythe VREF inputpin and I0 - I4 pinshaveinternalpulldownresistorsof approximately100 k . The functionof the pins is shownin Pin FunctionsRELATIVECURRENTI[ ](% FULL-SCALECHOPPINGCURRENT)0x00h0%0x01h5% 0x02h10%0x03h15%0x04h20%0x05h24%0x06h29% 0x07h34%0x08h38%0x09h43%0x0Ah47%0x0Bh51% 0x0Ch56%0x0Dh60%0x0Eh63%0x0Fh67%0x10h71% 0x11h74%0x12h77%0x13h80%0x14h83%0x15h86% 0x16h88%0x17h90%0x18h92%0x19h94%0x1Ah96% 0x1Bh97%0x1Ch98%0x1Dh99%0x1Eh100%0x1Fh10 0%Copyright 2010 2015,TexasInstrumentsIncorporatedSubmitD ocumentationFeedback11 ProductFolderLinks:DRV8840 DRV8840 SLVSAB7D MAY2010 BrakingDuringPWMcurrentchopping,the H-bridgeis enabledto drivecurrentthroughthe motorwindinguntil the PWMcurrentchoppingthresholdis shownin Figure6 as case1.