芯片數(shù)據(jù)手冊-tps51219應用指南

User'sSLUU818–AprilUsingtheTPS51219EVM-630High-Performance,Single,Synchronous,Step-DownControllerNotebookPowerTheTPS51219EVMevaluationmodule(EVM)usestheTPS51219.TheTPS51219isasmall-size,singlebuckcontrollerwithadaptiveon-timeD-CAP2?providing1.05-Voutputatupto20Afrominputvoltageranging8Vto20V. Typical ElectricalPerformance Test Test mendedTest Test Line/LoadRegulationandEfficiencyMeasurement ListofTest Equipment PerformanceDataandTypicalCharacteristic Load Line Load Output SwitchNode Turnon/Turnoff EVMAssemblyDrawingandPCBLayout Billof EVMAssemblyDrawingandPCBLayout BillofMaterialsListof TPS51219EVM-630Schematic,Sheet1of24 TPS51219EVM-630Schematic,Sheet2of25 TipandBarrelMeasurementforSwitchNodeVoltage6 TPS51219EVM- mendedTestSetup7 9 TPS51219EVM-630LoadRegulation9 TPS51219EVM-630LineRegulation OutputRipple SwitchingNodeWaveform EnableTurnonSLUU818–April2012 UsingtheTPS51219EVM-630High-Performance,Single,Synchronous, ation Step-DownControllerforNotebookPower1Enable Output0.5-VPrebiasTurnon TPS51219EVM-630TopLayerAssemblyDrawing(Top TPS51219EVM-630BottomLayerAssemblyDrawing(Bottom TPS51219EVM-630TopCopperLayer(Top TPS51219EVM-630InternalLayer1(Top TPS51219EVM-630InternalLayer2(Top TPS51219EVM-630BottomCopperLayer(Top ListofTPS51219EVM-630-001ElectricalPerformance FunctionsofEachTest EVMComponentsListAccordingtoSchematicShowninFigure UsingtheTPS51219EVM-630High-Performance,Single, SLUU818–AprilStep-DownControllerforNotebookPower Submitation

TheTPS51219EVMevaluationmodule(EVM)isdesignedtousearegulatedvoltageranging8Vto20Vtoproduce1.05-Voutputatupto20Aofloadcurrent.TheTPS51219EVMdemonstratestheTPS51219inatypicallow-voltageapplicationwithD-CAP2?modeoperation.TheEVMalsoprovidestestpointstoevaluatetheperformanceoftheTPS51219.TypicalNotebookI/OSystempowerTheTPS51219EVMD-CAP2?-modeoperationwithlow-ESRoutput2%tolerance1.05-Voutput20-Adc,steady-stateoutputSupportprebiasoutputvoltagestart-500-kHzswitchingSW1forenableConvenienttestpointsforprobingcriticalElectricalPerformanceTable1.TPS51219EVM-630-001ElectricalPerformanceTestInputVoltageVIN8VuminputVIN=8V,IOUT=203ANoloadinputVIN=8V,IOUT=0VoltageV5IN5VuminputV5IN=5V,VIN=12V,IOUT=20NoloadinputV5IN=5V,VIN=12V,IOUT=0OutputOutputvoltage,VIN=12V,IOUT=10VOutputloadcurrent,AOutputvoltageLineRegulation:VIN=8Vto20V,VOUT=1.05V,IOUT=20ALoadRegulation:VIN=12V,VOUT=1.05V,IOUT=1mAto20AOutputvoltageAtVIN=12V,VOUT=1.05V,IOUT=20OutputoverASystemSwitchingVIN=8V,VOUT=1.05V,IOUT=10PeakVIN=12V,VOUT=1.05FullloadVIN=12V,VOUT=1.05V,IOUT=20OperatingSLUU818–April UsingtheTPS51219EVM-630High-Performance,Single,Synchronous, ation DownControllerforNotebookPowerFigure1.TPS51219EVM-630Schematic,Sheet1ofUsingtheTPS51219EVM-630High-Performance,Single, SLUU818–AprilStep-DownControllerforNotebookPower SubmitationFigure2.TPS51219EVM-630Schematic,Sheet2ofSLUU818–April UsingtheTPS51219EVM-630High-Performance,Single, ation Step-DownControllerforNotebookPowerTestTestTestVoltageSourceVIN:TheinputvoltagesourceVINmustbea0-Vto20-VvariableDCsourcecapableofsupplying10Adc.ConnectVINtoJ4asshowninFigure4.VoltageSourceV5IN:TheinputvoltagesourceV5INmustbea0-Vto5-VvariableDCsourcecapableofsupplying1Adc.ConnectV5INtoJ1asshowninFigure4.V1:VINatTP11(VIN)andTP12(VIN_GND)V2:V5INatTP10(V5IN)andTP9(V5IN_GND)V3:VSNSatJ6-2andGSNSatJ6-1A1:VINinputcurrentA2:V5INinputcurrentOutputLoad:Theoutputloadmustbeanelectronicconstant- modeloadcapableof0-Adcto30-Adcat1.05V.Oscilloscope:Adigitalor ogoscilloscopecanbeusedtomeasuretheoutputripple.Theoscilloscopemustbesetfor1-MΩimpedance,20-MHzbandwidth,accoupling,1-μs/divisionhorizontalresolution,20-mV/divisionverticalresolution.TestpointJ6canbeusedtomeasurethedifferentialoutputripplevoltage, siveprobewiththeshortestleadedgroundclip.Forswitchnodevoltagemeasurement,TP7andTP8canbeusedbyplacingthepassiveprobetipthroughTP7andholdingthegroundbarrelTP8asshowninFigure3.Inthiscase,usingaleadedgroundconnectionmayinduceadditionalnoiseduetothelargegroundloop.MetalMetalGroundProbe Figure3.TipandBarrelMeasurementforSwitchNodeFan:SomeofthecomponentsinthisEVMmaygethot,approachingtemperaturesof60°Cduringoperation.Asmallfancapableof200-400LFMis mendedtoreducecomponenttemperatureswhiletheEVMisoperating.TheEVMmustnotbeprobedwhenthefanisnotrunning.mendedWireVINtoJ4(8-Vto20-V mendedwiresizeis1xAWG14perinputconnection,withthetotallengthofwirelessthan4feet(2-footinput,2-footreturn).V5INtoJ1(5-V mendedwiresizeis1xAWG18perinputconnection,withthetotallengthofwirelessthan4feet(2-footinput,2-footreturn).J12toTheminimum mendedwiresizeis2xAWG14,withthetotallengthofwirelessthan4feet(2-footinput,2-footreturn). UsingtheTPS51219EVM-630High-Performance,Single, SLUU818–AprilStep-DownControllerforNotebookPower ationTestmendedTest+__++_VINJP2_VCCIO+_TPS51219EVM-+V5IN J1:J2:V5INGND+_Figure4.TPS51219EVM- mendedTestFigure4isthe mendedtestsetuptoevaluatetheTPS51219EVM.WorkingatanESDworkstation,ensurethatanywriststraps,bootstraps,ormatsareconnectedreferencingtheusertoearthgroundbeforepowerisappliedtotheEVM.InputPriortoconnectingtheDCsourceVIN,itisadvisabletolimitthesourcecurrentfromVINto10Aum.EnsurethatVINisinitiallysetto0VandconnectedasshowninFigure4.PriortoconnectingtheDCsourceV5IN,itisadvisabletolimitthesourcecurrentfromV5INto1Aum.EnsurethatV5INisinitiallysetto0VandconnectedasshowninFigure4.ConnectavoltmeterV1atTP11(VIN)andTP12(VIN_GND)tomeasureVINvoltage,V2atTP9(V5IN)andTP10(V5IN_GND)tomeasureV5INvoltageasshowninFigure4.ConnectacurrentmeterA1betweenDCsourceVINandJ4tomeasuretheinputConnectavoltmeterV2betweenDCsourceV5INandJ1tomeasurethe5-VinputOutputConnecttheloadtoJ12andJ13,andsetloadtoconstant modetosink0-AdcbeforeVINandV5INareapplied.ConnectavoltmeterV3atJ6-2(VSNS)andJ6-1(GSNS)tomeasuretheoutputOtherPlaceafanasshowninFigure4andturniton,ensuringthatairisflowingacrosstheSLUU818–April UsingtheTPS51219EVM-630High-Performance,Single, ation Step-DownControllerforNotebookPowerTestTestLine/LoadRegulationandEfficiencyMeasurementEnsuretheloadissetto modeandtosink0EnsureSW1ontheEVMisatOFFpositionbeforeVINandV5INareIncreaseVINfrom0Vto8V.UseV1tomeasureinputIncreaseV5INfrom0Vto5V.UseV2tomeasureinputTurnSW1toONpositiontoenabletheVarytheloadfrom0Adcto20Adc;VOUTmustremaininloadVaryVINfrom8Vto20V;VOUTmustremaininlineDecreasetheloadto0TurnSW1toOFFpositiontodisabletheDecreaseV5INto0DecreaseVINto0ListofTestTable2.FunctionsofEachTestTestVREFREFINPowerOutputBuilt-indynamicloadGNDforSwitchGNDfor5VGNDfor5-VVINGNDforVINOutputforGNDforGNDforJ6-DifferentialsensingJ6-DifferentialsensingEquipmentShutdowntheShutdownV5INandShutdownthePerformanceDataandTypicalCharacteristicFigure5throughFigure13presenttypicalperformancecurvesforTPS51219EVM- UsingtheTPS51219EVM-630High-Performance,Single, SLUU818–AprilStep-DownControllerforNotebookPower Submitation

EfficiencyEfficiency

PerformanceDataandTypicalCharacteristicVINVIN=8N=12N=20

OutputCurrentFigure5.TPS51219EVM-630

LoadVINVIN=8VIN=20VIN=12

OutputCurrentFigure6.TPS51219EVM-630LoadSLUU818–April UsingtheTPS51219EVM-630High-Performance,Single, ation Step-DownControllerforNotebookPowerPerformanceDataandTypicalCharacteristicLine

Figure7.TPS51219EVM-630LineLoadVINVIN=20IOUT(8Offset:6VSNS-GSNS(0.5Offset:1.05Figure8.TPS51219EVM-630LoadTransient(VOUT=1.05 UsingtheTPS51219EVM-630High-Performance,Single, SLUU818–AprilStep-DownControllerforNotebookPower SubmitationOutput

PerformanceDataandTypicalCharacteristicVIN=12V,VIN=12V,IOUT=20AFigure9.OutputSwitchNodeVIN=12V,VIN=12V,IOUT=20AFigure10.SwitchingNodeSLUU818–April UsingtheTPS51219EVM-630High-Performance,Single, ation Step-DownControllerforNotebookPowerPerformanceDataandTypicalCharacteristicTurnon/TurnoffIOUTIOUT=15EN(5VSNS-(0.50.5VPre-PGOOD(5IOUT=15EN(5VSNS-(0.5PGOOD(5Figure11.Enable Figure12.EnableOutput0.5-VPrebiasTurnonIIOUT=0EN(5VSNS-(0.50.5VPre-PGOOD(5Figure13.Output0.5-VPrebiasTurnon UsingtheTPS51219EVM-630High-Performance,Single, SLUU818–AprilStep-DownControllerforNotebookPower ationEVMAssemblyDrawingandPCB

EVMAssemblyDrawingandPCBThefollowingfigures(Figure15throughFigure19)showthedesignoftheTPS51219EVM-630printed-circuitboard(PCB).TheEVMhasbeendesignedusingfour-layer,2-ozcoppercircuitboard.Figure14.TPS51219EVM-630TopLayerAssemblyDrawing(TopFigure15.TPS51219EVM-630BottomLayerAssemblyDrawing(BottomSLUU818–April UsingtheTPS51219EVM-630High-Performance,Single, ation Step-DownControllerforNotebookPowerEVMAssemblyDrawingandPCBFigure16.TPS51219EVM-630TopCopperLayer(TopFigure17.TPS51219EVM-630InternalLayer1(Top UsingtheTPS51219EVM-630High-Performance,Single, SLUU818–AprilStep-DownControllerforNotebookPower ationEVMAssemblyDrawingandPCBFigure18.TPS51219EVM-630InternalLayer2(TopFigure19.TPS51219EVM-630BottomCopperLayer(TopSLUU818–April UsingtheTPS51219EVM-630High-Performance,Single, ation Step-DownControllerforNotebookPowerBillofBillofTable3.EVMComponentsListAccordingtoSchematicShowninFigurePART7C1,C4,C27,C29,C30,C31,C370.1Capacitor,Ceramic,50V,X5R,110Capacitor,Ceramic,50V,X5R,12.2Capacitor,Ceramic,10V,X5R,4C7,C8,C9,10Capacitor,Ceramic,25V,X5R,TMK325BJ106MM-Taiyo5330Capacitor,Aluminum,2V,6mΩ,C13,C14,C15,C16,C17,C18,C19,C20,C21,C22,C23,C2422Capacitor,Ceramic,6.3V,X5R,JMK212BJ226MG-Taiyo10.47Capacitor,Ceramic,50V,X5R,2C32,1Capacitor,Ceramic,10V,X5R,3C25,C34,1Capacitor,Ceramic,50V,CH,0C2,C6,C26,C33,C38,1Diode,Schottky,200mA,300D2,D3,1Diode,DualSchottky,200mA,3010.36Inductor,PowerChokeSMT,30A,1.05NEC1MOSFET,NChan,30V,87A,7.31MOSFET,NChan,30V,100A,1.41MOSFET,NChan,30V,100A,20Q3,2R3,100Resistor,Chip,1/16W,11Resistor,Chip,1/16W,127Resistor,Chip,1/16W,7R14,R30,R310Resistor,Chip,1/16W,13.9Resistor,Chip,1/16W,12.2Resistor,Chip,1/10W,11.5Resistor,Chip,1/16W,1150Resistor,Chip,1/16W,3R18,R19,10Resistor,Chip,1/16W,1240Resistor,Chip,1/16W,2R25,0.25Resistor,Chip,1W,10.005Resistor,Chip,1W,110Resistor,Chip,1/16W,1130Resistor,Chip,1/16W,11Resistor,Chip,1/16W,0R1,R2,R13,R21,R22,R23,R27,R28,R321Switch,ON-ONMiniN1IC,HighPerformance,SingleSynchronousStep-DownController1IC,Regulator,LDO,50mA,241IC,Timer,Low-Power1IC,HEXSittTrigger1IC,Dual4AHighSpeedMOSFET UsingtheTPS51219EVM-630High-Performance,Single, SLUU818–AprilStep-DownControllerforNotebookPower SubmitationEVALUATIONBOARD/KIT/MODULE(EVM)ADDITIONALTexasInstruments(TI)providestheenclosedEvaluationBoard/Kit/Module(EVM)underthefollowingTheuserassumesallresponsibilityandliabilityforproperandsafehandlingofthegoods.Further,theuserindemnifiesTIfromallclaimsarisingfromthehandlingoruseofthegoods.Shouldthisevaluationboard/kitnotmeetthespecificationsindicatedintheUser’sGuide,th/kitmaybereturnedwithin30daysfromthedateofdeliveryforafullrefund.THEFOREGOINGLIMITEDWARRANTYISTHEEXCLUSIVEWARRANTYMADEBYSELLERTOBUYERANDISINLIEUOFALLOTHERWARRANTIES,EXPRESSED,IMPLIED,ORSTATUTORY,INCLUDINGANYWARRANTYOFMERCHANTABILITYORFITNESSFORANYPARTICULARPURPOSE.EXCEPTTOTHEEXTENTOFTHEINDEMNITYSETFORTHABOVE,NEITHERPARTYSHALLBELIABLETOTHEOTHERFORANYINDIRECT,SPECIAL,INCIDENTAL,ORCONSEQUENTIALPleasereadtheUser'sGuideand,specifically,theWarningsandRestrictionsnoticeintheUser'sGuidepriortohandlingtheproduct.Thisnoticecontainsimportantsafetyinformationabouttemperaturesandvoltages.ForadditionalinformationonTI'senvironmentaland/orsafetyprograms,pleasevisit orcontactTI.NolicenseisgrantedunderanypatentrightorotherinlectualpropertyrightofTIcoveringorrelatingtoanymachine,process,orcombinationinwhichsuchTIproductsorservicesmightbeorareused.TIcurrentlydealswithavarietyofcustomersforproducts,andthereforeourarrangementwiththeuserisnotexclusive.TIassumesnoliabilityforapplicationsassistance,customerproductdesign,softwareperformance,orinfringementofpatentsorservicesdescrbedherein.REGULATORYCOMPLIANCEAsnotedintheEVMUser’sGuideand/orEVMitself,thisEVMand/or panyinghardwaremayormaynotbesubjecttotheFederalCommunicationsCommission(FCC)andIndustryCanada(IC)rules.ForEVMsnotsubjecttotheaboverules,thisevaluationboard/kit/moduleisintendedforuseforENGINEERINGDEVELOPMENT,DEMONSTRATIONOREVALUATIONPURPOSESONLYandisnotconsideredbyTItobeafinishedendproductfitfeneralconsumeruse.Itgenerates,uses,andcanradiateradiofrequencyenergyandhasnotbeentestedforcompliancewiththelimitsofcomputingdevicespursuanttopart15ofFCCorICES-003rules,whicharedesignedtoprovidereasonableprotectionagainstradiofrequencyinterference.Operationoftheequipmentmaycauseinterferencewithradiocommunications,inwhichcasetheuserathisownexpensewillberequiredtotakewhatevermeasuresmayberequiredtocorrectthisinterference.GeneralStatementforEVMsincludingaUserPower/FrequencyUseObligations:Thisradioisintendedfordevelopment/professionaluseonlyinlegallyallocatedfrequencyandpowerlimits.Anyuseofradiofrequenciesand/orpoweravailabilityofthisEVManditsdevelopmentapplication(s)mustcomplywithlocal erningradiospectrumallocationandpowerlimitsforthisevaluationmodule.Itistheuser’ssoleresponsibilitytoonlyoperatethisradioinlegallyacceptablefrequencyspaceandwithinlegallymandatedpowerlimitations.AnyexceptionstothisarestrictlyprohibitedandunauthorizedbyTexasInstrumentsunlessuserhasobtainedappropriateexperimental/developmentlicensesfromlocalregulatoryauthorities,whichisresponsibilityofuserincludingitsacceptableauthorization.ForEVMsannotatedasFCC–FEDERALCOMMUNICATIONSCOMMISSIONPart15CompliantThisdevicecomplieswithpart15oftheFCCRules.Operationissubjecttothefollowinoconditions:(1)Thisdevicemaynotcauseharmfulinterference,and(2)thisdevicemustacceptanyinterferencereceived,includinginterferencethatmaycauseundesiredoperation.Changesormodificationsnotexpresslyapprovedbythepartyresponsibleforcompliancecouldvoidtheuser'sauthoritytooperatetheFCCInterferenceStatementforClassAEVMThisequipmenthasbeentestedandfoundtocomplywiththelimitsforaClassAdigitaldevice,pursuanttopart15oftheFCCRules.Theselimitsaredesignedtoprovidereasonableprotectionagainstharmfulinterferencewhentheequipmentisoperatedinacommercialenvironment.Thisequipmentgenerates,uses,andcanradiateradiofrequencyenergyand,ifnotinstalledandusedinaccordancewiththeinstructionmanual,maycauseharmfulinterferencetoradiocommunications.Operationofthisequipmentinaresidentialareaislikelytocauseharmfulinterferenceinwhichcasetheuserwillberequiredtocorrecttheinterferenceathisownexpense.FCCInterferenceStatementforClassBEVMThisequipmenthasbeentestedandfoundtocomplywiththelimitsforaClassBdigitaldevice,pursuanttopart15oftheFCCRules.Theselimitsaredesignedtoprovidereasonableprotectionagainstharmfulinterferenceinaresidentialinstallation.Thisequipmentgenerates,usesandcanradiateradiofrequencyenergyand,ifnotinstalledandusedinaccordancewiththeinstructions,maycauseharmfulinterferencetoradiocommunications.However,thereisnoguaranteethatinterferencewillnotoccurinaparticularinstallation.Ifthisequipmentdoescauseharmfulinterferencetoradioorevisionreception,whichcanbedeterminedbyturningtheequipmentoffandon,theuserisencouragedtotrytocorrecttheinterferencebyoneormoreofthefollowingmeasures:ReorientorrelocatethereceivingIncreasetheseparationbetweentheequipmentandConnecttheequipmentintoanoutletonacircuitdifferentfromthattowhichthereceiverisConsultthedealeroranexperiencedradio/TVtechnicianfor