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AnIMPORTANTNOTICEattheendofthisdatasheetaddressesavailability,warranty,changes,useinsafety-criticalapplications,intellectualpropertymattersandotherimportantdisclaimers.
PRODUCTIONDATA.
TPS63024TPS630241,TPS630242SLVSCK8A–NOVEMBER2014–REVISEDDECEMBER2014TPS63024xHighCurrent,HighEfficiencySingleInductorBuck-BoostConverter11Features1RealBuckorBoostoperationwithautomaticandseamlesstransitionbetweenBuckandBoostoperation2.
3Vto5.
5Vinputvoltagerange1.
5AContinuousOutputCurrent:VIN≥2.
5V,VOUT=3.
3VAdjustableandfixedoutputvoltageEfficiencyupto95%inBuckorBoostmodeandupto97%whenVIN=VOUT2.
5MHztypicalswitchingfrequency35μAoperatingquiescentcurrentIntegratedSoft–StartPowerSaveModeTrueshutdownfunctionOutputcapacitordischargefunctionOver-TemperatureProtectionandOvercurrentProtectionWidecapacitanceselectionSmall1.
766mmx2.
086mm,20-pinWCSP2ApplicationsCellularPhones,SmartPhonesTabletsPCPCandSmartPhoneaccessoriesPointofloadregulationBatteryPoweredApplications3DescriptionTheTPS63024arehighefficiency,lowquiescentcurrentbuck-boostconverterssuitableforapplicationwheretheinputvoltageishigherorlowerthantheoutput.
Outputcurrentscangoashighas1.
5Ainboostmodeandashighas3Ainbuckmode.
Themaximumaveragecurrentintheswitchesislimitedtoatypicalvalueof3A.
TheTPS63024regulatestheoutputvoltageoverthecompleteinputvoltagerangebyautomaticallyswitchingbetweenbuckorboostmodedependingontheinputvoltageensuringaseamlesstransitionbetweenmodes.
Thebuck-boostconverterisbasedonafixedfrequency,pulse-width-modulation(PWM)controllerusingsynchronousrectificationtoobtainhighestefficiency.
Atlowloadcurrents,theconverterentersPowerSaveModetomaintainhighefficiencyoverthecompleteloadcurrentrange.
ThereisaPFM/PWMpinthatallowstheusertochoosebetweenautomaticPFM/PWMmodeoperationandforcedPWMoperation.
DuringPWMmodeafixed-frequencyoftypically2.
5MHzisused.
Theoutputvoltageisprogrammableusinganexternalresistordivider,orisfixedinternallyonthechip.
Theconvertercanbedisabledtominimizebatterydrain.
Duringshutdown,theloadisdisconnectedfromthebattery.
Thedeviceispackagedina20-pinWCSPpackagemeasuring1.
766mmx2.
086mm.
DeviceInformation(1)PARTNUMBERPACKAGEBODYSIZE(NOM)TPS63024DSBGA(20)1.
766mm*2.
086mmTPS630241TPS630242(1)Forallavailablepackages,seetheorderableaddendumattheendofthedatasheet.
DeviceComparisonPARTNUMBERVOUTTPS63024AdjustableTPS6302412.
9VTPS6302423.
3VTypicalApplicationEfficiencyvsOutputCurrent2TPS63024TPS630241,TPS630242SLVSCK8A–NOVEMBER2014–REVISEDDECEMBER2014www.
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comProductFolderLinks:TPS630241TPS630242SubmitDocumentationFeedbackCopyright2014,TexasInstrumentsIncorporatedTableofContents1Features.
12Applications13Description14RevisionHistory.
25PinConfigurationandFunctions.
36Specifications.
36.
1AbsoluteMaximumRatings36.
2ESDRatings46.
3RecommendedOperatingConditions.
46.
4ThermalInformation.
46.
5ElectricalCharacteristics.
56.
6TimingRequirements.
66.
7TypicalCharacteristics.
77DetailedDescription87.
1Overview87.
2FunctionalBlockDiagram87.
3FeatureDescription.
97.
4DeviceFunctionalModes.
118ApplicationandImplementation148.
1ApplicationInformation.
148.
2TypicalApplication149PowerSupplyRecommendations.
2110Layout.
2110.
1LayoutGuidelines2110.
2LayoutExample2111DeviceandDocumentationSupport2211.
1DeviceSupport2211.
2DocumentationSupport2211.
3RelatedLinks2211.
4Trademarks.
2211.
5ElectrostaticDischargeCaution.
2211.
6Glossary.
2212Mechanical,Packaging,andOrderableInformation224RevisionHistoryNOTE:Pagenumbersforpreviousrevisionsmaydifferfrompagenumbersinthecurrentversion.
ChangesfromOriginal(November2014)toRevisionAPageAddedSpecifications,DetailedDescriptionsection,ApplicationandImplementationsection,PowerSupplyRecommendationssection,Layoutsection,DeviceandDocumentationSupportsection;and,changedstatustoProductionData.
43TPS63024TPS630241,TPS630242www.
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VOUTA1,A2,A3PWRBuck-boostconverteroutputFBA4INVoltagefeedbackofadjustableversion,mustbeconnectedtoVOUTforfixedoutputvoltageversionsL2B1,B2,B3PWRConnectionforInductorPFM/PWMB4INsetlowforPFMmode,sethighforforcedPWMmode.
ItmustnotbeleftfloatingPGNDC1,C2,C3PWRPowerGroundGNDC4PWRAnalogGroundL1D1,D2,D3PWRConnectionforInductorEND4INEnableinput.
Sethightoenableandlowtodisable.
Itmustnotbeleftfloating.
VINE1,E2,E3PWRSupplyvoltageforpowerstageVINAE4PWRSupplyvoltageforcontrolstage.
(1)StressesbeyondthoselistedunderAbsoluteMaximumRatingsmaycausepermanentdamagetothedevice.
Thesearestressratingsonly,whichdonotimplyfunctionaloperationofthedeviceattheseoranyotherconditionsbeyondthoseindicatedunderRecommendedOperatingConditions.
Exposuretoabsolute-maximum-ratedconditionsforextendedperiodsmayaffectdevicereliability.
(2)Allvoltagevaluesarewithrespecttonetworkgroundpin.
(3)DCvoltagerating.
(4)ACtransientvoltagerating.
(5)Maximumcontinuosaverageinputcurrent3.
5A,underthoseconditiondonotexceed105°Cformorethan25%operatingtime.
6Specifications6.
1AbsoluteMaximumRatings(1)overjunctiontemperaturerange(unlessotherwisenoted)VALUEMINMAXUNITVoltage(2)VIN,L1,EN,VINA,PFM/PWM–0.
37VVOUT,FB–0.
34VL2(3)–0.
34VL2(4)-0.
35.
5VInputcurrentContinuosaveragecurrentintoL1(5)2.
7ATJOperatingjunctiontemperature–40125°CTstgStoragetemperaturerange–651504TPS63024TPS630241,TPS630242SLVSCK8A–NOVEMBER2014–REVISEDDECEMBER2014www.
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(2)JEDECdocumentJEP157statesthat250-VCDMallowssafemanufacturingwithastandardESDcontrolprocess.
6.
2ESDRatingsVALUEUNITV(ESD)ElectrostaticdischargeHuman-bodymodel(HBM),perANSI/ESDA/JEDECJS-001(1)±2000VCharged-devicemodel(CDM),perJEDECspecificationJESD22-C101(2)±700(1)RefertotheApplicationInformationsectionforfurtherinformation(2)Effectiveinductancevalueatoperatingcondition.
Thenominalvaluegivenmatchesatypicalinductortobechosentomeettheinductancerequired.
(3)Duetothedcbiaseffectofceramiccapacitors,theeffectivecapacitanceislowerthenthenominalvaluewhenavoltageisapplied.
Thisiswhythecapacitanceisspecifiedtoallowtheselectionofthenominalcapacitorrequiredwiththedcbiaseffectforthistypeofcapacitor.
Thenominalvaluegivenmatchesatypicalcapacitortobechosentomeettheminimumcapacitancerequired.
6.
3RecommendedOperatingConditions(1)MINTYPMAXUNITVINInputVoltageRange2.
35.
5VVOUTOutputVoltage2.
53.
6VLInductance(2)0.
511.
3HCoutOutputCapacitance(3)16FTAOperatingambienttemperature–4085°CTJOperatingvirtualjunctiontemperature–40125°C(1)Formoreinformationabouttraditionalandnewthermalmetrics,seetheICPackageThermalMetricsapplicationreport,SPRA953.
6.
4ThermalInformationTHERMALMETRIC(1)TPS63024xUNITYFF20PINSRθJAJunction-to-ambientthermalresistance53.
8°C/WRθJC(top)Junction-to-case(top)thermalresistance0.
5RθJBJunction-to-boardthermalresistance10.
1ψJTJunction-to-topcharacterizationparameter1.
4ψJBJunction-to-boardcharacterizationparameter9.
8RθJC(bot)Junction-to-case(bottom)thermalresistanceN/A5TPS63024TPS630241,TPS630242www.
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(2)ForvariationofthisparameterwithInputvoltageandtemperatureseeFigure8.
TocalculateminimumoutputcurrentinaspecificworkingpointseeFigure8andEquation1troughEquation4.
6.
5ElectricalCharacteristicsVIN=2.
3Vto5.
5V,TJ=–40°Cto125°C,typicalvaluesareatTA=25°C(unlessotherwisenoted)PARAMETERTESTCONDITIONSMINTYPMAXUNITSUPPLYVINInputvoltagerange2.
35.
5VVIN_MinMinimuminputvoltagetoturnonintofullloadRLOAD=2.
22.
7VIQQuiescentcurrentVINIOUT=0mA,EN=VIN=3.
6V,VOUT=3.
3VTJ=-40°Cto85°C,notswitching3570μAVOUT12μAIsdShutdowncurrentEN=low,TJ=-40°Cto85°C0.
12μAUVLOUndervoltagelockoutthresholdVINfalling1.
61.
72VUndervoltagelockouthysteresis70mVThermalshutdownTemperaturerising140°CLOGICSIGNALSEN,PFM/PWMVIHHighlevelinputvoltageVIN=2.
3Vto5.
5V1.
2VVILLowlevelinputvoltageVIN=2.
3Vto5.
5V0.
4VIlkgInputleakagecurrentPFM/PWM,EN=GNDorVIN0.
010.
2μAOUTPUTVOUTOutputVoltagerange2.
53.
6VVFBFeedbackregulationvoltageTPS630240.
8VVFBFeedbackvoltageaccuracyPWMmode,TPS63024-1%1%VFBFeedbackvoltageaccuracy(1)PFMmode,TPS63024-1%1.
3%+3%VOUTOutputvoltageaccuracyPWMmode,TPS6302412.
8712.
92.
929VVOUTOutputvoltageaccuracy(1)PFMmode,TPS6302412.
8712.
9382.
987VVOUTOutputvoltageaccuracyPWMmode,TPS6302423.
2673.
33.
333VVOUTOutputvoltageaccuracy(1)PFMmode,TPS6302423.
2673.
3433.
399VIPWM/PFMOutputcurrenttoenterPFMmodeVIN=3V;VOUT=3.
3V350mAIFBFeedbackinputbiascurrentVFB=0.
8V10100nARDS_Buck(on)HighsideFETon-resistanceVIN=3.
0V,VOUT=3.
3V35mLowsideFETon-resistanceVIN=3.
0V,VOUT=3.
3V50mRDS_Boost(on)HighsideFETon-resistanceVIN=3.
0V,VOUT=3.
3V25mLowsideFETon-resistanceVIN=3.
0V,VOUT=3.
3V50mIINAverageinputcurrentlimit(2)VIN=3.
0V,VOUT=3.
3VTJ=25°Cto125°C2.
1233.
54AfsSwitchingFrequency2.
5MHzRON_DISCDischargeON-ResistanceEN=low120LineregulationVIN=2.
8Vto5.
5V,IOUT=1.
5A7.
4mV/VLoadregulationVIN=3.
6V,IOUT=0Ato1.
5A2.
5mV/A6TPS63024TPS630241,TPS630242SLVSCK8A–NOVEMBER2014–REVISEDDECEMBER2014www.
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6TimingRequirementsVIN=2.
3Vto5.
5V,TJ=–40°Cto125°C,typicalvaluesareatTA=25°C(unlessotherwisenoted)PARAMETERTESTCONDITIONSMINTYPMAXUNITOUTPUTtSSSoftstarttimeEN=lowtohigh,BuckmodeVIN=3.
6V,VOUT=3.
3V,IOUT=1.
5A450sEN=lowtohigh,BoostmodeVIN=2.
8V,VOUT=3.
3V,IOUT=1.
5A700stdStartupdelayTimefromwhenEN=hightowhendevicestartsswitching100s7TPS63024TPS630241,TPS630242www.
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comSLVSCK8A–NOVEMBER2014–REVISEDDECEMBER2014ProductFolderLinks:TPS630241TPS630242SubmitDocumentationFeedbackCopyright2014,TexasInstrumentsIncorporated6.
7TypicalCharacteristics.
.
Figure1.
HighSideFETOn-ResistancevsVINFigure2.
QuiescentCurrentvsInputVoltage8TPS63024TPS630241,TPS630242SLVSCK8A–NOVEMBER2014–REVISEDDECEMBER2014www.
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1OverviewTheTPS63024xuse4internalN-channelMOSFETstomaintainsynchronouspowerconversionatallpossibleoperatingconditions.
Thisenablesthedevicetokeephighefficiencyoverthecompleteinputvoltageandoutputpowerrange.
Toregulatetheoutputvoltageatallpossibleinputvoltageconditions,thedeviceautomaticallyswitchesfrombuckoperationtoboostoperationandbackasrequiredbytheconfiguration.
Italwaysusesoneactiveswitch,onerectifyingswitch,oneswitchisheldon,andoneswitchheldoff.
Therefore,itoperatesasabuckconverterwhentheinputvoltageishigherthantheoutputvoltage,andasaboostconverterwhentheinputvoltageislowerthantheoutputvoltage.
Thereisnomodeofoperationinwhichall4switchesareswitchingatthesametime.
Keepingoneswitchonandoneswitchoffeliminatestheirswitchinglosses.
TheRMScurrentthroughtheswitchesandtheinductoriskeptataminimum,tominimizeswitchingandconductionlosses.
Controllingtheswitchesthiswayallowstheconvertertoalwayskeephigherefficiency.
Thedeviceprovidesaseamlesstransitionfrombucktoboostorfromboosttobuckoperation.
7.
2FunctionalBlockDiagramFigure3.
FunctionalBlockDiagram(AdjustableOutputVoltage)9TPS63024TPS630241,TPS630242www.
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FunctionalBlockDiagram(FixedOutputVoltage)7.
3FeatureDescription7.
3.
1UndervoltageLockout(UVLO)Toavoidmis-operationofthedeviceatlowinputvoltages,anundervoltagelockoutisincluded.
UVLOshutsdownthedeviceatinputvoltageslowerthantypically1.
7Vwitha70mVhysteresis.
7.
3.
2OutputDischargeFunctionWhenthedeviceisdisabledbypullingenablelowandthesupplyvoltageisstillapplied,theinternaltransistorusetodischargetheoutputcapacitoristurnedon,andtheoutputcapacitorisdischargeduntilUVLOisreached.
Thismeans,ifthereisnosupplyvoltageappliedtheoutputdischargefunctionisalsodisabled.
Thetransistorwhichisresponsibleofthedischargefunction,whenturnedon,operateslikeanequivalent120resistor,ensuringtypicallylessthan10msdischargetimefor20uFoutputcapacitanceanda3.
3Voutput.
7.
3.
3ThermalShutdownThedevicegoesintothermalshutdownoncethejunctiontemperatureexceedstypically140°C.
10TPS63024TPS630241,TPS630242SLVSCK8A–NOVEMBER2014–REVISEDDECEMBER2014www.
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3.
4SoftstartTominimizeinrushcurrentandoutputvoltageovershootduringstartup,thedevicehasaSoftstart.
Atturnon,theinputcurrentraisesmonotonicallyuntiltheoutputvoltagereachesregulation.
DuringSoftstart,theinputcurrentfollowsthecurrentrampchargingtheinternalSoftstartcapacitor.
Thedevicesmoothlyrampsuptheinputcurrentbringingtheoutputvoltagetoitsregulatedvalueevenifalargecapacitorisconnectedattheoutput.
TheSoftstarttimeismeasuredasthetimefromwhentheENpinisassertedtowhentheoutputvoltagehasreached90%ofitsnominalvalue.
Thereistypicallya100sdelaytimefromwhentheENpinisassertedtowhenthedevicestartstheswitchingactivity.
TheSoftstarttimedependsontheloadcurrent,theinputvoltage,andtheoutputcapacitor.
TheSoftstarttimeinboostmodeislongerthenthetimeinbuckmode.
ThetotaltypicalSoftstarttimeis1ms.
Theinductorcurrentisabletoincreaseandalwaysassureasoftstartunlessarealshortcircuitisappliedattheoutput.
7.
3.
5ShortCircuitProtectionTheTPS63024xprovidesshortcircuitprotectiontoprotectitselfandtheapplication.
Whentheoutputvoltagedoesnotincreaseabove1.
2V,thedeviceassumesashortcircuitattheoutputandlimitstheinputcurrentto3A.
11TPS63024TPS630241,TPS630242www.
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4DeviceFunctionalModes7.
4.
1ControlLoopDescriptionFigure5.
AverageCurrentModeControlThecontrollercircuitofthedeviceisbasedonanaveragecurrentmodetopology.
Theaverageinductorcurrentisregulatedbyafastcurrentregulatorloopwhichiscontrolledbyavoltagecontrolloop.
Figure5showsthecontrolloop.
Thenoninvertinginputofthetransconductanceamplifier,gmv,isassumedtobeconstant.
Theoutputofgmvdefinestheaverageinductorcurrent.
TheinductorcurrentisreconstructedbymeasuringthecurrentthroughthehighsidebuckMOSFET.
Thiscurrentcorrespondsexactlytotheinductorcurrentinboostmode.
InbuckmodethecurrentismeasuredduringtheontimeofthesameMOSFET.
Duringtheofftime,thecurrentisreconstructedinternallystartingfromthepeakvalueattheendoftheontimecycle.
Theaveragecurrentandthefeedbackfromtheerroramplifiergmvformsthecorrectionsignalgmc.
ThiscorrectionsignaliscomparedtothebuckandtheboostsawtoothrampgivingthePWMsignal.
DependingonwhichofthetworampsthegmcoutputcrosseseithertheBuckortheBooststageisinitiated.
Whentheinputvoltageisclosetotheoutputvoltage,onebuckcycleisalwaysfollowedbyaboostcycle.
Inthiscondition,nomorethanthreecyclesinarowofthesamemodeareallowed.
Thiscontrolmethodinthebuck-boostregionensuresarobustcontrolandthehighestefficiency.
12TPS63024TPS630241,TPS630242SLVSCK8A–NOVEMBER2014–REVISEDDECEMBER2014www.
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4.
2PowerSaveModeOperationFigure6.
PowerSaveModeOperationDependingontheloadcurrent,inordertoprovidethebestefficiencyoverthecompleteloadrange,thedeviceworksinPWMmodeatloadcurrentsofapproximately350mAorhigher.
Atlighterloads,thedeviceswitchesautomaticallyintoPowerSaveModetoreducepowerconsumptionandextendbatterylife.
ThePFM/PWMpinisusedtoselectbetweenthetwodifferentoperationmodes.
ToenablePowerSaveMode,thePFM/PWMpinmustbesetlow.
DuringPowerSaveMode,thepartoperateswithareducedswitchingfrequencyandlowestsupplycurrenttomaintainhighefficiency.
Theoutputvoltageismonitoredwithacomparatorateveryclockcyclebythethresholdscomplowandcomphigh.
WhenthedeviceentersPowerSaveMode,theconverterstopsoperatingandtheoutputvoltagedrops.
Theslopeoftheoutputvoltagedependsontheloadandtheoutputcapacitance.
Whentheoutputvoltagereachesthecomplowthreshold,atthenextclockcyclethedevicerampsuptheoutputvoltageagain,bystartingoperation.
Operationcanlastforoneorseveralpulsesuntilthecomphighthresholdisreached.
Atthenextclockcycle,iftheloadisstilllowerthanabout350mA,thedeviceswitchesoffagainandthesameoperationisrepeated.
Instead,ifatthenextclockcycle,theloadisabove350mA,thedeviceautomaticallyswitchestoPWMmode.
InordertokeephighefficiencyinPFMmode,thereisonlyonecomparatoractivetokeeptheoutputvoltageregulated.
TheACrippleinthisconditionisincreased,comparedtothePWMmode.
Theamplitudeofthisvoltagerippleintheworstcasescenariois50mVpk-pk,(typically30mVpk-pk),with20Feffectiveoutputcapacitance.
Inordertoavoidacriticalvoltagedropwhenswitchingfrom0Atofullload,theoutputvoltageinPFMmodeistypically1.
3%abovethenominalvalueinPWMmode.
ThisiscalledDynamicVoltagePositioningandallowstheconvertertooperatewithasmalloutputcapacitorandstillhavealowabsolutevoltagedropduringheavyloadtransients.
PowerSaveModeisdisabledbysettingthePFM/PWMpinhigh.
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4.
3CurrentLimitThecurrentlimitvariationdependsonthedifferencebetweentheinputandoutputvoltage.
Themaximumcurrentlimitvalueisatthehighestdifference.
GiventhecurvesprovidedinFigure8,itispossibletocalculatetheoutputcurrentreachedinboostmode,usingEquation1andEquation2andinbuckmodeusingEquation3andEquation4.
(1)(2)(3)whereη=Estimatedconverterefficiency(usethenumberfromtheefficiencycurvesor0.
90asanassumption)IIN=Minimumaverageinputcurrent(Figure8)(4)7.
4.
4SupplyandGroundTheTPS63024xprovidestwoinputpins(VINandVINA)andtwogroundpins(PGNDandGND).
TheVINpinsuppliestheinputpower,whiletheVINApinprovidesvoltageforthecontrolcircuits.
Asimilarapproachisusedforthegroundpins.
GNDandPGNDareusedtoavoidgroundshiftproblemsduetothehighcurrentsintheswitches.
ThereferenceforallcontrolfunctionsistheGNDpin.
ThepowerswitchesareconnectedtoPGND.
BothgroundsmustbeconnectedonthePCBatonlyonepoint,ideally,closetotheGNDpin.
7.
4.
5DeviceEnableThedevicestartsoperationwhentheENpinissethigh.
ThedeviceentersshutdownmodewhentheENpinissetlow.
Inshutdownmode,theregulatorstopsswitching,allinternalcontrolcircuitryisswitchedoff,andtheloadisdisconnectedfromtheinput.
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TI'scustomersareresponsiblefordeterminingsuitabilityofcomponentsfortheirpurposes.
Customersshouldvalidateandtesttheirdesignimplementationtoconfirmsystemfunctionality.
8.
1ApplicationInformationTheTPS63024xarehighefficiency,lowquiescentcurrentbuck-boostconverterssuitableforapplicationwheretheinputvoltageishigher,lowerorequaltotheoutput.
Outputcurrentscangoashighas1.
5Ainboostmodeandashighas3Ainbuckmode.
Themaximumaveragecurrentintheswitchesislimitedtoatypicalvalueof3A.
8.
2TypicalApplicationFigure7.
3.
3-VAdjustableVersion8.
2.
1DesignRequirementsThedesignguidelineprovidesacomponentselectiontooperatethedevicewithintherecommendedoperatingconditions.
Table1showsthelistofcomponentsfortheApplicationCharacteristicCurves.
Table1.
ComponentsforApplicationCharacteristicCurves(1)REFERENCEDESCRIPTIONMANUFACTURERTPS63024TexasInstrumentsL11μH,8.
75A,13mΩ,SMDXAL4020-102MEB,CoilcraftC110μF6.
3V,0603,X5RceramicStandardC2,C322μF6.
3V,0603,X5RceramicStandardR1560kStandardR2180kStandard15TPS63024TPS630241,TPS630242www.
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comSLVSCK8A–NOVEMBER2014–REVISEDDECEMBER2014ProductFolderLinks:TPS630241TPS630242SubmitDocumentationFeedbackCopyright2014,TexasInstrumentsIncorporated(1)Inductortoleranceandcurrentde-ratingisanticipated.
Theeffectiveinductancecanvaryby20%and–30%.
(2)Capacitancetoleranceandbiasvoltagede-ratingisanticipated.
Theeffectivecapacitancecanvaryby20%and–50%.
(3)Typicalapplication.
Othercheckmarkindicatesrecommendedfiltercombinations8.
2.
2DetailedDesignProcedureThefirststepistheselectionoftheoutputfiltercomponents.
TosimplifythisprocessTable2outlinepossibleinductorandcapacitorvaluecombinations.
8.
2.
2.
1OutputFilterDesignTable2.
MatrixofOutputCapacitorandInductorCombinationsNOMINALINDUCTORVALUE[H](1)NOMINALOUTPUTCAPACITORVALUE[F](2)444766881000.
680+++1.
0+(3)++++1.
5+++(1)SeeThird-PartyProductsDesclaimer8.
2.
2.
2InductorSelectionTheinductorselectionisaffectedbyseveralparameterlikeinductorripplecurrent,outputvoltageripple,transitionpointintoPowerSaveMode,andefficiency.
SeeTable3fortypicalinductors.
Table3.
ListofRecommendedInductors(1)INDUCTORVALUECOMPONENTSUPPLIERSIZE(LxWxHmm)Isat/DCR1HCoilcraftXAL4020-102ME4X4X2.
104.
5A/10m1HToko,DFE322512C3.
2X2.
5X1.
24.
7A/34m1HTDK,SPM40124.
4X4.
1X1.
24.
1A/38m1HWuerth,744383340103X3X1.
26.
6A/42.
10m0.
6HCoilcraftXFL4012-601ME4X4X1.
25A/17.
40m0.
68HWuerth,7443833400683X3X1.
27.
7A/36mForhighefficiencies,theinductorshouldhavealowdcresistancetominimizeconductionlosses.
Especiallyathigh-switchingfrequencies,thecorematerialhasahighimpactonefficiency.
Whenusingsmallchipinductors,theefficiencyisreducedmainlyduetohigherinductorcorelosses.
Thisneedstobeconsideredwhenselectingtheappropriateinductor.
Theinductorvaluedeterminestheinductorripplecurrent.
Thelargertheinductorvalue,thesmallertheinductorripplecurrentandthelowertheconductionlossesoftheconverter.
Conversely,largerinductorvaluescauseaslowerloadtransientresponse.
Toavoidsaturationoftheinductor,thepeakcurrentfortheinductorinsteadystateoperationiscalculatedusingEquation6.
Onlytheequationwhichdefinestheswitchcurrentinboostmodeisshown,becausethisprovidesthehighestvalueofcurrentandrepresentsthecriticalcurrentvalueforselectingtherightinductor.
(5)whereD=DutyCycleinBoostmod=Converterswitchingfrequency(typical2.
5MHz)L=Inductorvalueη=Estimatedconverterefficiency(usethenumberfromtheefficiencycurvesor0.
90asanassumption)Note:Thecalculationmustbedonefortheminimuminputvoltagewhichispossibletohaveinboostmode(6)Calculatingthemaximuminductorcurrentusingtheactualoperatingconditionsgivestheminimumsaturationcurrentoftheinductorneeded.
It'srecommendedtochooseaninductorwithasaturationcurrent20%higherthanthevaluecalculatedusingEquation6.
PossibleinductorsarelistedinTable3.
16TPS63024TPS630241,TPS630242SLVSCK8A–NOVEMBER2014–REVISEDDECEMBER2014www.
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2.
2.
3CapacitorSelection8.
2.
2.
3.
1InputCapacitorAtleasta10μFinputcapacitorisrecommendedtoimprovelinetransientbehavioroftheregulatorandEMIbehaviorofthetotalpowersupplycircuit.
AnX5RorX7RceramiccapacitorplacedascloseaspossibletotheVINandPGNDpinsoftheICisrecommended.
Thiscapacitancecanbeincreasedwithoutlimit.
IftheinputsupplyislocatedmorethanafewinchesfromtheTPS63024xconverteradditionalbulkcapacitancemayberequiredinadditiontotheceramicbypasscapacitors.
Anelectrolyticortantalumcapacitorwithavalueof47μFisatypicalchoice.
8.
2.
2.
3.
2OutputCapacitorFortheoutputcapacitor,useofasmallceramiccapacitorsplacedascloseaspossibletotheVOUTandPGNDpinsoftheICisrecommended.
Therecommendednominaloutputcapacitancevalueis20FwithavarianceasoutlinedinTable2.
Thereisalsonoupperlimitfortheoutputcapacitancevalue.
Largercapacitorscausesloweroutputvoltagerippleaswellasloweroutputvoltagedropduringloadtransients.
8.
2.
2.
4SettingTheOutputVoltageWhentheadjustableoutputvoltageversionTPS63024xisused,theoutputvoltageissetbyanexternalresistordivider.
TheresistordividermustbeconnectedbetweenVOUT,FBandGND.
Whentheoutputvoltageisregulatedproperly,thetypicalvalueofthevoltageattheFBpinis800mV.
Thecurrentthroughtheresistivedividershouldbeabout10timesgreaterthanthecurrentintotheFBpin.
ThetypicalcurrentintotheFBpinis0.
1μA,andthevoltageacrosstheresistorbetweenFBandGND,R2,istypically800mV.
Basedonthesetwovalues,therecommendedvalueforR2shouldbelowerthan180k,inordertosetthedividercurrentat4μAorhigher.
Itisrecommendedtokeepthevalueforthisresistorintherangeof180k.
Fromthat,thevalueoftheresistorconnectedbetweenVOUTandFB,R1,dependingontheneededoutputvoltage(VOUT),canbecalculatedusingEquation7:(7)8.
2.
3ApplicationCurvesVOUT=3.
3VFigure8.
MinimumAverageInputCurrentvsInputVoltagePFM/PWM=LowFigure9.
EfficiencyvsOutputCurrent17TPS63024TPS630241,TPS630242www.
ti.
comSLVSCK8A–NOVEMBER2014–REVISEDDECEMBER2014ProductFolderLinks:TPS630241TPS630242SubmitDocumentationFeedbackCopyright2014,TexasInstrumentsIncorporatedPFM/PWM=HighFigure10.
EfficiencyvsOutputCurrentPFM/PWM=LowFigure11.
EfficiencyvsOutputCurrentPFM/PWM=HighFigure12.
EfficiencyvsOutputCurrentPFM/PWM=LowVOUT=3.
3VFigure13.
EfficiencyvsInputVoltagePFM/PWM=HighVOUT=3.
3VFigure14.
EfficiencyvsInputVoltage18TPS63024TPS630241,TPS630242SLVSCK8A–NOVEMBER2014–REVISEDDECEMBER2014www.
ti.
comProductFolderLinks:TPS630241TPS630242SubmitDocumentationFeedbackCopyright2014,TexasInstrumentsIncorporatedPFM/PWM=LowVOUT=2.
9VFigure15.
EfficiencyvsInputVoltagePFM/PWM=HighVOUT=2.
9VFigure16.
EfficiencyvsInputVoltagePFM/PWM=LowFigure17.
OutputVoltagevsOutputCurrentPFM/PWM=HighFigure18.
OutputVoltagevsOutputCurrentVIN=3.
3VIOUT=290mAFigure19.
OutputVoltageRippleinBuck-BoostModeandPFMtoPWMTransitionVIN=2.
8VIOUT=16mAFigure20.
OutputVoltageRippleinBoostModeandPFMOperation19TPS63024TPS630241,TPS630242www.
ti.
comSLVSCK8A–NOVEMBER2014–REVISEDDECEMBER2014ProductFolderLinks:TPS630241TPS630242SubmitDocumentationFeedbackCopyright2014,TexasInstrumentsIncorporatedVIN=4.
2VIOUT=16mAFigure21.
OutputVoltageRippleinBuckModeandPFMOperationVIN=2.
5VIOUT=1AFigure22.
SwitchingWaveformsinBoostModeandPWMOperationVIN=4.
5VIOUT=1AFigure23.
SwitchingWaveformsinBuckModeandPWMOperationVIN=3.
3VIOUT=1AFigure24.
SwitchingWaveformsinBuck-BoostModeandPWMOperationVIN=2.
8VIOUT=0Ato1.
5AFigure25.
LoadTransientResponseBoostModeVIN=4.
2VIOUT=0Ato1.
5AFigure26.
LoadTransientResponseBuckMode20TPS63024TPS630241,TPS630242SLVSCK8A–NOVEMBER2014–REVISEDDECEMBER2014www.
ti.
comProductFolderLinks:TPS630241TPS630242SubmitDocumentationFeedbackCopyright2014,TexasInstrumentsIncorporatedVIN=from3.
5Vto3.
6VIOUT=1.
5AFigure27.
LineTransientResponseVIN=2.
5VIOUT=0AFigure28.
StartUpAfterEnableVIN=4.
5VIOUT=0AFigure29.
StartUpAfterEnable21TPS63024TPS630241,TPS630242www.
ti.
comSLVSCK8A–NOVEMBER2014–REVISEDDECEMBER2014ProductFolderLinks:TPS630241TPS630242SubmitDocumentationFeedbackCopyright2014,TexasInstrumentsIncorporated9PowerSupplyRecommendationsTheTPS63024xdevicefamilyhasnospecialrequirementsforitsinputpowersupply.
Theinputpowersupply'soutputcurrentneedstoberatedaccordingtothesupplyvoltage,outputvoltageandoutputcurrentoftheTPS63024x.
10Layout10.
1LayoutGuidelinesThePCBlayoutisanimportantsteptomaintainthehighperformanceoftheTPS63024xdevices.
PlaceinputandoutputcapacitorsascloseaspossibletotheIC.
Tracesneedtobekeptshort.
Routingwideanddirecttracestotheinputandoutputcapacitorresultsinlowtraceresistanceandlowparasiticinductance.
Useacommon-powerGND.
ThesensetraceconnectedtoFBissignaltrace.
KeepthesetracesawayfromL1andL2nodes.
10.
2LayoutExampleFigure30.
TPS63024xLayout22TPS63024TPS630241,TPS630242SLVSCK8A–NOVEMBER2014–REVISEDDECEMBER2014www.
ti.
comProductFolderLinks:TPS630241TPS630242SubmitDocumentationFeedbackCopyright2014,TexasInstrumentsIncorporated11DeviceandDocumentationSupport11.
1DeviceSupport11.
1.
1Third-PartyProductsDisclaimerTI'SPUBLICATIONOFINFORMATIONREGARDINGTHIRD-PARTYPRODUCTSORSERVICESDOESNOTCONSTITUTEANENDORSEMENTREGARDINGTHESUITABILITYOFSUCHPRODUCTSORSERVICESORAWARRANTY,REPRESENTATIONORENDORSEMENTOFSUCHPRODUCTSORSERVICES,EITHERALONEORINCOMBINATIONWITHANYTIPRODUCTORSERVICE.
11.
2DocumentationSupport11.
2.
1RelatedDocumentationForrelateddocumentationseethefollowing:TPS63024EVM-553User'sGuide,TPS63024HighCurrent,HighEfficiencySingleInductorBuck-BoostConverter,SLVUA2411.
3RelatedLinksThetablebelowlistsquickaccesslinks.
Categoriesincludetechnicaldocuments,supportandcommunityresources,toolsandsoftware,andquickaccesstosampleorbuy.
Table4.
RelatedLinksPARTSPRODUCTFOLDERSAMPLE&BUYTECHNICALDOCUMENTSTOOLS&SOFTWARESUPPORT&COMMUNITYTPS63024ClickhereClickhereClickhereClickhereClickhereTPS630241ClickhereClickhereClickhereClickhereClickhereTPS630242ClickhereClickhereClickhereClickhereClickhere11.
4TrademarksAlltrademarksarethepropertyoftheirrespectiveowners.
11.
5ElectrostaticDischargeCautionThesedeviceshavelimitedbuilt-inESDprotection.
TheleadsshouldbeshortedtogetherorthedeviceplacedinconductivefoamduringstorageorhandlingtopreventelectrostaticdamagetotheMOSgates.
11.
6GlossarySLYZ022—TIGlossary.
Thisglossarylistsandexplainsterms,acronyms,anddefinitions.
12Mechanical,Packaging,andOrderableInformationThefollowingpagesincludemechanical,packaging,andorderableinformation.
Thisinformationisthemostcurrentdataavailableforthedesignateddevices.
Thisdataissubjecttochangewithoutnoticeandrevisionofthisdocument.
Forbrowser-basedversionsofthisdatasheet,refertotheleft-handnavigation.
PACKAGEOPTIONADDENDUMwww.
ti.
com10-Dec-2020Addendum-Page1PACKAGINGINFORMATIONOrderableDeviceStatus(1)PackageTypePackageDrawingPinsPackageQtyEcoPlan(2)Leadfinish/Ballmaterial(6)MSLPeakTemp(3)OpTemp(°C)DeviceMarking(4/5)SamplesTPS630241YFFRACTIVEDSBGAYFF203000RoHS&GreenSNAGCULevel-1-260C-UNLIM-40to125TPS630241TPS630241YFFTACTIVEDSBGAYFF20250RoHS&GreenSNAGCULevel-1-260C-UNLIM-40to125TPS630241TPS630242YFFRACTIVEDSBGAYFF203000RoHS&GreenSNAGCULevel-1-260C-UNLIM-40to125TPS630242TPS630242YFFTACTIVEDSBGAYFF20250RoHS&GreenSNAGCULevel-1-260C-UNLIM-40to125TPS630242TPS63024YFFRACTIVEDSBGAYFF203000RoHS&GreenSNAGCULevel-1-260C-UNLIM-40to125TPS63024TPS63024YFFTACTIVEDSBGAYFF20250RoHS&GreenSNAGCULevel-1-260C-UNLIM-40to125TPS63024(1)Themarketingstatusvaluesaredefinedasfollows:ACTIVE:Productdevicerecommendedfornewdesigns.
LIFEBUY:TIhasannouncedthatthedevicewillbediscontinued,andalifetime-buyperiodisineffect.
NRND:Notrecommendedfornewdesigns.
Deviceisinproductiontosupportexistingcustomers,butTIdoesnotrecommendusingthispartinanewdesign.
PREVIEW:Devicehasbeenannouncedbutisnotinproduction.
Samplesmayormaynotbeavailable.
OBSOLETE:TIhasdiscontinuedtheproductionofthedevice.
(2)RoHS:TIdefines"RoHS"tomeansemiconductorproductsthatarecompliantwiththecurrentEURoHSrequirementsforall10RoHSsubstances,includingtherequirementthatRoHSsubstancedonotexceed0.
1%byweightinhomogeneousmaterials.
Wheredesignedtobesolderedathightemperatures,"RoHS"productsaresuitableforuseinspecifiedlead-freeprocesses.
TImayreferencethesetypesofproductsas"Pb-Free".
RoHSExempt:TIdefines"RoHSExempt"tomeanproductsthatcontainleadbutarecompliantwithEURoHSpursuanttoaspecificEURoHSexemption.
Green:TIdefines"Green"tomeanthecontentofChlorine(Cl)andBromine(Br)basedflameretardantsmeetJS709Blowhalogenrequirementsof<=1000ppmthreshold.
Antimonytrioxidebasedflameretardantsmustalsomeetthe<=1000ppmthresholdrequirement.
(3)MSL,PeakTemp.
-TheMoistureSensitivityLevelratingaccordingtotheJEDECindustrystandardclassifications,andpeaksoldertemperature.
(4)Theremaybeadditionalmarking,whichrelatestothelogo,thelottracecodeinformation,ortheenvironmentalcategoryonthedevice.
(5)MultipleDeviceMarkingswillbeinsideparentheses.
OnlyoneDeviceMarkingcontainedinparenthesesandseparatedbya"~"willappearonadevice.
IfalineisindentedthenitisacontinuationofthepreviouslineandthetwocombinedrepresenttheentireDeviceMarkingforthatdevice.
PACKAGEOPTIONADDENDUMwww.
ti.
com10-Dec-2020Addendum-Page2(6)Leadfinish/Ballmaterial-OrderableDevicesmayhavemultiplematerialfinishoptions.
Finishoptionsareseparatedbyaverticalruledline.
Leadfinish/Ballmaterialvaluesmaywraptotwolinesifthefinishvalueexceedsthemaximumcolumnwidth.
ImportantInformationandDisclaimer:TheinformationprovidedonthispagerepresentsTI'sknowledgeandbeliefasofthedatethatitisprovided.
TIbasesitsknowledgeandbeliefoninformationprovidedbythirdparties,andmakesnorepresentationorwarrantyastotheaccuracyofsuchinformation.
Effortsareunderwaytobetterintegrateinformationfromthirdparties.
TIhastakenandcontinuestotakereasonablestepstoproviderepresentativeandaccurateinformationbutmaynothaveconducteddestructivetestingorchemicalanalysisonincomingmaterialsandchemicals.
TIandTIsuppliersconsidercertaininformationtobeproprietary,andthusCASnumbersandotherlimitedinformationmaynotbeavailableforrelease.
InnoeventshallTI'sliabilityarisingoutofsuchinformationexceedthetotalpurchasepriceoftheTIpart(s)atissueinthisdocumentsoldbyTItoCustomeronanannualbasis.
TAPEANDREELINFORMATION*AlldimensionsarenominalDevicePackageTypePackageDrawingPinsSPQReelDiameter(mm)ReelWidthW1(mm)A0(mm)B0(mm)K0(mm)P1(mm)W(mm)Pin1QuadrantTPS630241YFFRDSBGAYFF203000180.
08.
41.
892.
20.
694.
08.
0Q1TPS630241YFFTDSBGAYFF20250180.
08.
41.
892.
20.
694.
08.
0Q1TPS630242YFFRDSBGAYFF203000180.
08.
41.
892.
20.
694.
08.
0Q1TPS630242YFFTDSBGAYFF20250180.
08.
41.
892.
20.
694.
08.
0Q1TPS63024YFFRDSBGAYFF203000180.
08.
41.
892.
20.
694.
08.
0Q1TPS63024YFFTDSBGAYFF20250180.
08.
41.
892.
20.
694.
08.
0Q1PACKAGEMATERIALSINFORMATIONwww.
ti.
com17-Jun-2015PackMaterials-Page1*AlldimensionsarenominalDevicePackageTypePackageDrawingPinsSPQLength(mm)Width(mm)Height(mm)TPS630241YFFRDSBGAYFF203000182.
0182.
020.
0TPS630241YFFTDSBGAYFF20250182.
0182.
020.
0TPS630242YFFRDSBGAYFF203000182.
0182.
020.
0TPS630242YFFTDSBGAYFF20250182.
0182.
020.
0TPS63024YFFRDSBGAYFF203000182.
0182.
020.
0TPS63024YFFTDSBGAYFF20250182.
0182.
020.
0PACKAGEMATERIALSINFORMATIONwww.
ti.
com17-Jun-2015PackMaterials-Page2D:Max=E:Max=2.
116mm,Min=1.
796mm,Min=2.
056mm1.
736mmIMPORTANTNOTICEANDDISCLAIMERTIPROVIDESTECHNICALANDRELIABILITYDATA(INCLUDINGDATASHEETS),DESIGNRESOURCES(INCLUDINGREFERENCEDESIGNS),APPLICATIONOROTHERDESIGNADVICE,WEBTOOLS,SAFETYINFORMATION,ANDOTHERRESOURCES"ASIS"ANDWITHALLFAULTS,ANDDISCLAIMSALLWARRANTIES,EXPRESSANDIMPLIED,INCLUDINGWITHOUTLIMITATIONANYIMPLIEDWARRANTIESOFMERCHANTABILITY,FITNESSFORAPARTICULARPURPOSEORNON-INFRINGEMENTOFTHIRDPARTYINTELLECTUALPROPERTYRIGHTS.
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