PTV03010WAH;中文规格书,Datasheet资料

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PTV03010WSLTS241A–FEBRUARY2005–REVISEDJULY2007

8-A,3.3-VINPUTNONISOLATEDWIDE-OUTPUTADJUSTSIPMODULE

FEATURES

••••••••••••

Upto8-AOutputCurrent3.3-VInputBus

Wide-OutputVoltageAdjust(0.8Vto2.5V)

Efficienciesupto93%On/OffInhibitPrebiasStart-Up

UndervoltageLockoutAuto-Track™Sequencing

OutputOvercurrentProtection(Nonlatching,Auto-Reset)

OperatingTemperature:–40°Cto85°CSafetyAgencyApprovals:UL/IEC/CSA-22.260950-1POLA™Compatible

APPLICATIONS

••••

MultivoltageDigitalSystemsHigh-DensityLogicCircuits

High-EndComputersandServers3.3-VIntermediateBusArchitectures

DESCRIPTION

ThePTV03010Wisaready-to-usenonisolatedpowermodule,andpartofanewclassofcompletedc/dcswitchingregulatorsfromTexasInstruments.Theseregulatorscombinehighperformancewithdouble-sided,surface-mountconstruction,togivedesignerstheflexibilitytopowerthemostcomplexmultiprocessordigitalsystemsusingoff-the-shelfcatalogparts.

ThePTV03010Wseriesisproducedina8-pin,singlein-linepin(SIP)package.TheSIPfootprintminimizesboardspace,andoffersanalternatepackageoptionforspaceconsciousapplications.Operatingfroma3.3-Vinputbus,theseriesprovidesstep-downconversiontoawiderangeofoutputvoltages,atupto8Aofoutputcurrent.Theoutputvoltagecanbesettoanyvalueovertherange,0.8Vto2.5V.Theoutputvoltageissetusingasingleexternalresistor.

ThisseriesincludesAuto-Track™.Auto-Track™simplifiesthetaskofsupply-voltagesequencinginapowersystembyenablingtheoutputvoltageofmultiplemodulestoaccuratelytrackeachother,oranyexternalvoltage,duringpowerupandpowerdown.

Otheroperatingfeaturesincludeanon/offinhibit,andtheabilitytostartupintoanexistingoutputvoltageorprebias.Anonlatchingovercurrenttripprotectsagainstloadfaults.

Targetapplicationsincludecomplexmultivoltage,multiprocessorsystemsthatincorporatetheindustry'shigh-speedmicroprocessors,busdrivers,andtheTMS320™DSPfamily.

Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsofTexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.

POLA,Auto-Track,TMS320aretrademarksofTexasInstruments.

PRODUCTIONDATAinformationiscurrentasofpublicationdate.ProductsconformtospecificationsperthetermsoftheTexasInstrumentsstandardwarranty.Productionprocessingdoesnotnecessarilyincludetestingofallparameters.

Copyright©2005–2007,TexasInstrumentsIncorporated

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STANDARDAPPLICATION

Track5Track8VIInhibit7C1*100mF(Required)InhibitGND*See󰀀theApplication󰀀Information󰀀section󰀀for󰀀capacitor󰀀recommendations.

VIPTV03010GND614VOVOAdj2,󰀀3VOC2*10mFCeramic(Required)RSET#1%0.05󰀀W(Required)C3*100mF(Optional)C4*10mFCeramic(Optional)GNDLOAD#R

is󰀀required󰀀to󰀀adjust󰀀the󰀀output󰀀voltage󰀀higher󰀀than󰀀its󰀀lowest󰀀value.See󰀀theApplication󰀀Information󰀀section󰀀for󰀀values.

SET

ORDERINGINFORMATION

PTV03010(BasicModel)

OutputVoltageRange0.8V–2.5V(Adjustable)(1)(2)

PartNumberPTV03010WAH

DESCRIPTIONVerticalT/H

Pb-freeand

RoHS

Yes(2)

MechanicalPackage(1)

EVA

SeetheapplicablepackagedrawingfordimensionsandPCboardlayout.Lead(Pb)-freespecifiesSn/Agpinsoldermaterial.

ABSOLUTEMAXIMUMRATINGS

overoperatingfree-airtemperaturerangeunlessotherwisenoted(1)

UNIT

V(Track)TATstgV(INH)(1)(2)

Trackinputvoltage

OperatingtemperaturerangeLeadtemperatureStoragetemperatureInhibitinputvoltage

OverVIrange5seconds

–0.3VtoVI+0.3V–40°Cto85°C260°C

(2)

–55°Cto125°C–0.3VtoVI+0.3V

Stressesbeyondthoselistedunderabsolutemaximumratingsmaycausepermanentdamagetothedevice.Thesearestressratingsonly,andfunctionaloperationofthedeviceattheseoranyotherconditionsbeyondthoseindicatedunderrecommendedoperatingconditionsisnotimplied.Exposuretoabsolute-maximum-ratedconditionsforextendedperiodsmayaffectdevicereliability.Thisproductisnotcompatiblewithsurface-mountreflowsolderprocesses.

PACKAGESPECIFICATIONS

PTV03010W(SuffixAH)

WeightFlammabilityMechanicalshockMechanicalvibration(1)

Qualificationlimit.

MeetsUL94V-O

PerMil-STD-883D,Method2002.3,1ms,1/2sine,mountedMil-STD-883D,Method2007.2,20Hz-2000Hz

500G10G

(1)(1)

2.5grams

2

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PTV03010WSLTS241A–FEBRUARY2005–REVISEDJULY2007

ELECTRICALCHARACTERISTICS

operatingat25Cfree-airtemperature,VI=3.3V,VO=2.5V,C1=100µF,C2=10µF,C3=0µF,andIO=IOmax(unlessotherwisenoted)

PARAMETER

IOVI

OutputcurrentInputvoltagerangeSet-pointvoltagetoleranceTemperaturevariation

VO

LineregulationLoadregulationTotaloutputvariationAdjustrange

–40°CIncludesset-point,line,load,–40°C≤TA≤85°COverVIrange

RSET=2.21kΩ,VO=2.5VRSET=5.49kΩ,VO=1.8V

η

Efficiency

IO=IOmax

RSET=8.87kΩ,VO=1.5VRSET=17.4kΩ,VO=1.2VRSET=36.5kΩ,VO=1V

Outputvoltageripple(pk-pk)

IO(trip)

OvercurrentthresholdTransientresponse

IILInputlowcurrentControlslew-ratelimitVIincreasingVIdecreasingVIHInputhighvoltage

Inhibitcontrol(pin7)

II(stby)ƒS

InputstandbycurrentSwitchingfrequencyExternalinputcapacitance

Capacitancevalue

Equivalentseriesresistance(nonceramic)

MTBF

Reliability

PerTelcordiaSR-332,50%stress,TA=40°C,groundbenign

VILInputlowvoltageIILInputlowcurrentOverVIandIOranges

Nonceramic(C1)

Ceramic(C2)Nonceramic

Ceramic

4

ReferencedtoGNDPintoGND

550100

(4)

TESTCONDITIONS

NaturalconvectionairflowOverIOloadrange

MIN

02.95

TYPMAX

8±2

±0.5±5±5

±3

(2)(1)

UNITAV%Vo%VomVmV%VoV

2.53.65

(2)

0.8

93%90%%87%85%2016

RecoverytimeVoover/undershoot

PintoGNDC3≤C3(max)

2.45

2.2VI–0.5–0.2

0.24106002.470100

20-MHzbandwidth

Reset,followedbyauto-recovery

1-A/sloadstep,50to100%IOmax,C3=100µF

mVPPAµsmV

–0.13

12.8Open

(3)

Trackcontrol(pin5)

UVLO

Undervoltagelockout

mAV/msVVmAmA

0.6

Inhibit(pin7)toGND,Track(pin5)open

650kHzµF

10(4)

00

(7)

100(5)

11,000

(6)

Externaloutputcapacitance(C3)

300

µFmΩ

5106Hr

(1)(2)(3)(4)(5)(6)(7)

Seethermalderatingcurvesforsafeoperatingarea(SOA),orconsultfactoryforappropriatederating.

Theset-pointvoltagetoleranceisaffectedbythetoleranceandstabilityofRSET.ThestatedlimitisunconditionallymetifRSEThasatoleranceof1%,with100ppm/°Corbettertemperaturestability.

Thiscontrolpinisinternallypulleduptotheinputvoltage,VI.Ifthisinputisleftopen-circuit,themoduleoperateswheninputpowerisapplied.Asmalllow-leakage(<100nA)MOSFETisrecommendedforcontrol.Forfurtherinformation,seetherelatedapplicationnote.A10-µFhigh-frequencyceramiccapacitorand100-µFelectrolyticinputcapacitorarerequiredforproperoperation.Theelectrolyticcapacitormustberatedfor300mArmsminimumripplecurrent.SeetheApplicationInformationforfurtherguidanceoncapacitorselection.

Anexternaloutputcapacitorisnotrequiredforbasicoperation.Adding100µFofdistributedcapacitanceattheloadimprovesthetransientresponse.

Thisisthecalculatedmaximum.TheminimumESRlimitationoftenresultsinalowervalue.WhencontrollingtheTrackpinusingavoltagesupervisor,CO(max)isreducedto2200μF.SeetheApplicationInformationforfurtherguidance.

ThisisthetypicalESRforalltheelectrolytic(nonceramic)outputcapacitance.Use7mΩastheminimumwhenusingmaximum-ESRvaluestocalculate.

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(8)(9)

TYPICALCHARACTERISTICS(3.3-VINPUT)

EFFICIENCY

vs

OUTPUTCURRENT

10090

Efficiency󰀀-󰀀%VO=󰀀2.5󰀀VOUTPUTVOLTAGERIPPLE

vs

OUTPUTCURRENT

60

VO-󰀀Output󰀀Ripple󰀀Voltage󰀀-󰀀mVPP50403020100

80706050

VO=󰀀1.5󰀀VVO=󰀀1.2󰀀VVO=󰀀0.8󰀀V012345678012345678

IO-󰀀Output󰀀Current󰀀-AIO-󰀀Output󰀀Current󰀀-A

Figure1.

POWERDISSIPATION

vs

OUTPUTCURRENT

2PD-󰀀Power󰀀Dissipation󰀀-󰀀WFigure2.

TEMPERATUREDERATING

vs

OUTPUTCURRENT

9080Temperature󰀀Derating-oC1.61.20.80.40400󰀀LFM200󰀀LFM100󰀀LFMAir󰀀FlowNat󰀀Conv7060504030201Airflow󰀀is󰀀parallel󰀀to󰀀thelong󰀀axis󰀀of󰀀the󰀀module0123456782345678IO-󰀀Output󰀀Current󰀀-A

IO-󰀀Output󰀀Current󰀀-AFigure3.

(8)(9)

Figure4.

Theelectricalcharacteristicdatahasbeendevelopedfromactualproductstestedat25C.Thisdataisconsideredtypicalfortheconverter.AppliestoFigure1,Figure2,andFigure3.Thetemperaturederatingcurvesrepresenttheconditionsatwhichinternalcomponentsareatorbelowthemanufacturer'smaximumoperatingtemperatures.Theairflowdirectionisparalleltothelongaxisofthemodule.Deratinglimitsapplytomodulessoldereddirectlytoa100mmx100mmdouble-sidedPCBwith2oz.copper.AppliestoFigure4.4

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DEVICEINFORMATION

TERMINALFUNCTIONS

TERMINALNAMEVIVOGND

NO.82,31,6

DESCRIPTION

Thepositiveinputvoltagepowernodetothemodule,whichisreferencedtocommonGND.TheregulatedpositivepoweroutputwithrespecttotheGNDnode.

ThisisthecommongroundconnectionfortheVIandVOpowerconnections.Itisalsothe0-Vdcreferenceforthecontrolinputs.

TheInhibitpinisanopen-collector/drain,active-lowinputthatisreferencedtoGND.Applyingalow-levelgroundsignaltothisinputdisablesthemoduleoutputandturnsofftheoutputvoltage.WhentheInhibitcontrolisactive,theinputcurrentdrawnbytheregulatorissignificantlyreduced.Iftheinhibitfeatureisnotused,thecontrolpinisleftopen-circuit.Themodulethenproducesanoutputvoltagewheneveravalidinputsourceisapplied.

A1%resistormustbeconnecteddirectlybetweenthispinandGND(pin1isrecommended)tosettheoutputvoltageofthemodulehigherthanitslowestvalue.Thetemperaturestabilityoftheresistorshouldbe100ppm/C(orbetter).Theset-pointrangeis0.8Vto2.5V.Theresistorvalueiscalculatedusingaformula.Ifthisinputisleftopen-circuit,theoutputvoltagedefaultstoitslowestvalue.Forfurtherinformation,seetherelatedapplicationnote.

Thespecificationtablegivesthestandardresistorvaluesforanumberofcommonoutputvoltages.

Thisisananalogcontrolinputthatenablestheoutputvoltagetofollowanexternalvoltage.Thispinbecomesactivetypically20msaftertheinputvoltagehasbeenapplied,andallowsdirectcontroloftheoutputvoltagefrom0Vuptothenominalset-pointvoltage.Withinthisrange,theoutputfollowsthevoltageattheTrackpinonavolt-for-voltbasis.Whenthecontrolvoltageisraisedabovethisrange,themoduleregulatesatitsset-point

voltage.Thefeatureallowstheoutputvoltagetorisesimultaneouslywithothermodulespoweredfromthesameinputbus.Ifunused,thisinputshouldbeconnectedtoVI.

NOTE:Duetotheundervoltagelockoutfeature,theoutputofthemodulecannotfollowitsowninputvoltageduringpowerup.SeetherelatedApplicationInformationforfurtherguidance.

FrontViewofModule

Inhibit7

VoAdjust

4

Track5

PIN1

Figure5.PinTerminalLocations

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APPLICATIONINFORMATION

CapacitorRecommendationsforthePTV03010WPowerModule

InputCapacitors

Therequiredinputcapacitorsarea10-µFceramicandaminimumof100-µFelectrolytictype.The100-µFcapacitancemustberatedfor300mArmsripplecurrentcapability.SeeTable1.Theaboveripplecurrentrequirementsareconditionalthatthe10-µFceramiccapacitorispresent.The10-µFX5R/X7Rceramiccapacitorisnecessarytoreduceboththemagnitudeofripplecurrentthroughtheelectroyticcapacitorandtheamountofripplecurrentreflectedbacktotheinputsource.Ceramiccapacitorsshouldbelocatedwithin0.5inch.(1,3cm)ofthemodule'sinputpins.AdditionalceramiccapacitorscanbeaddedtoreducetheRMSripplecurrentrequirementfortheelectrolyticcapacitor.

Ripplecurrent(rms)rating,lessthan150-mΩequivalentseriesresistance(ESR),andtemperaturearethemajorconsiderationswhenselectinginputcapacitors.Unlikepolymer-tantalumcapacitors,regulartantalumcapacitorshavearecommendedminimumvoltageratingof2×(max.dcvoltage+acripple).Thisisstandardpracticetoensurereliability.Onlyafewtantalumcapacitorswerefoundtohavesufficientvoltageratingtomeetthisrequirement.Attemperaturesbelow0°C,theESRofaluminumelectrolyticcapacitorsincreases.Fortheseapplications,Os-Con,polymer-tantalum,andpolymer-aluminumtypesshouldbeconsidered.OutputCapacitor(Optional)

Forapplicationswithloadtransients(suddenchangesinloadcurrent),regulatorresponsebenefitsfromexternaloutputcapacitance.Therecommendedoutputcapacitanceof100µFallowsthemoduletomeetitstransientresponsespecification.Formostapplications,ahigh-qualitycomputer-gradealuminumelectrolyticcapacitorisadequate.Thesecapacitorsprovidedecouplingoverthefrequencyrange,2kHzto150kHz,andaresuitablewhenambienttemperaturesareabove0°C.Foroperationbelow0°C,tantalum-,ceramic-,orOs-Con-typecapacitorsarerecommended.Whenusingoneormorenonceramiccapacitors,thecalculatedESRshouldbenolowerthan4mΩ(7mΩusingthemanufacturer'smaximumESRforasinglecapacitor).Alistofpreferredlow-ESR-typecapacitorsareidentifiedinTable1.CeramicCapacitors

Above150kHz,theperformanceofaluminumelectrolyticcapacitorsislesseffective.MultilayerceramiccapacitorshavelowESRandaresonantfrequencyhigherthanthebandwidthoftheregulator.Theycanbeusedtoreducethereflectedripplecurrentattheinputaswellasimprovethetransientresponseoftheoutput.Whenusedontheoutput,theircombinedESRisnotcriticalaslongasthetotalvalueofceramiccapacitancedoesnotexceedapproximately300µF.Also,topreventtheformationoflocalresonances,donotplacemorethanfiveidenticalceramiccapacitorsinparallelwithvaluesof10µForgreater.TantalumCapacitors

Tantalum-typecapacitorscanonlybeusedontheoutputbus,andarerecommendedforapplicationswheretheambientoperatingtemperaturecanbelessthan0°C.TheAVXTPS,Sprague593D/594/595,andKemetT495/T510capacitorseriesaresuggestedovermanyothertantalumtypesduetotheirhigherratedsurge,powerdissipation,andripplecurrentcapability.Asacaution,manygeneral-purposetantalumcapacitorshaveconsiderablyhigherESR,reducedpowerdissipation,andlowerripplecurrentcapability.Thesecapacitorsarealsolessreliableastheyhavereducedpowerdissipationandsurgecurrentratings.TantalumcapacitorsthathavenostatedESRorsurgecurrentratingarenotrecommendedforpowerapplications.CapacitorTable

Table1identifiesthecharacteristicsofcapacitorsfromanumberofvendorswithacceptableESRandripplecurrent(rms)ratings.Therecommendednumberofcapacitorsrequiredatboththeinputandoutputbusesisidentifiedforeachcapacitortype.

Note:Thisisnotanextensivecapacitorlist.Capacitorsfromothervendorsareavailablewithcomparablespecifications.Thoselistedareforguidance.TheRMSripplecurrentratingandESR(at100kHz)arecriticalparametersnecessarytoensurebothoptimumregulatorperformanceandlongcapacitorlife.

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APPLICATIONINFORMATION(continued)

Table1.Input/OutputCapacitors(1)

CapacitorCharacteristics

CapacitorVendor,Type,Series(Style)

WorkingVoltage(V)10166.36.3101610161010106.310101010101010166.36.3

Murata,CeramicX5R(SMD)

6.36.31616

TDK,CeramicX5R(SMD)

6.36.31616

Value(µF)330220470220470680120270470220120100100150100330120220100102247100472210100472210

0.002

—

3225

MaxESRat100kHz

(Ω)0.1170.1170.160.020.120.090.0270.090.0720.0250.0350.040.0750.050.0550.010.040.140.030.0020.0020.0020.002

—MaxRippleCurrentat85°C(Irms)

(mA)

55555560031605556702800575760240025001810>1090>15591500>5200212010402670—

PhysicalSize

(mm)8×11,58×11,58×10,26,3×9,88×12510×108×6,710×12,58×11,57,3×4,38×76,3×67,3×5,7×4,17,3×5,7×4,14,3×7,3×44,3×7,3×4

8×77,5×4,3×4,110×10,53225322532253225

InputBus1111111111111111111≥1≥1≥1≥1≥1≥1≥1≥1≥1

(2)(2)(2)

Quantity

OptionalOutputBus

111≤311≤311≤2≤5≤3≤4≤4≤4≤1≤3≤4≤3≤5≤5≤5≤3≤5≤5≤5≤3≤5≤5≤5

VendorPartNumber

Panasonic,AluminumFC(Radial)FK(SMD)UnitedChemi-ConPSA,Poly-Alum(Radial)LXZ,Aluminum(Radial)MVZ,Auminum(SMD)PXA,Poly-Alum(SMD)Nichicon,AluminumHD(Radial)SanyoTP,Poscap

SEQP,Os-Con(Radial)SVP,Os-Con(SMD)AVX,Tantalum,(SMD)TPS(SMD)Kemet(SMD)

T520,Poly-Tant(SMD)T530,Poly-Tant/OrganicVishay-Sprague94SVP,Os-Con(SMD)595D,Tantalum(SMD)94SA,Os-Con(Radial)Kemet,CeramicX5R(SMD)

EEUFC1A331EEUFC1C221EEVFK0J471PPSA6.3VB220MF11LXZ10VB471M8X12LLMVZ16VC681MJ10TPPXA10VC121MH70TPUPM1C271MHH6UHD1A471MPR10TPE220M10SEQP120M6SVP100M

TPSC107M010R0075TPSD157M010R0050T520D107M010ASE055T530X337M010ASE01094SVP127X0010E7595D227X0010D2T94SA107X0010EBPC1210C106M4PACC1210C226K9PACC1210C476K9PACGRM32ER60J107MGRM32ER60J476MGRM32ER61C226KGRM32DR61C106KC3225X5R0J107MTC3225X5R0J476MTC3225X5R1C226MTC3225X5R1C106MT

≥1(2)

(2)(2)(2)

≥1(2)

(2)(2)(2)

(1)

(2)

CapacitorSupplierVerification

Pleaseverifyavailabilityofcapacitorsidentifiedinthistable.Capacitorsuppliersmayrecommendalternativepartnumbersbecauseoflimitedavailabilityorobsoleteproducts.Insomeinstances,thecapacitorproductlifecyclemaybeindeclineandhaveshort-termconsiderationforobsolescence.

RoHS,Lead-freeandMaterialDetails

Pleaseconsultcapacitorsuppliersregardingmaterialcomposition,RoHSstatus,lead-freestatus,andmanufacturingprocess

requirements.Componentdesignatorsorpartnumberdeviationscanoccurwhenmaterialcompositionorsolderingrequirementsareupdated.

Ceramiccapacitorsarerequiredtocomplementelectrolytictypesattheinputandtoreducehigh-frequencyripplecurrent.

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DesigningforFastLoadTransients

Thetransientresponseofthedc/dcconverterhasbeencharacterizedusingaloadtransientwithadi/dtof1A/µs.Thetypicalvoltagedeviationforthisloadtransientisgiveninthedatasheetspecificationtableusingtheoptionalvalueofoutputcapacitance.Asthedi/dtofatransientisincreased,theresponseofaconverterregulationcircuitultimatelydependsonitsoutputcapacitordecouplingnetwork.Thisisaninherentlimitationwithanydc/dcconverteroncethespeedofthetransientexceedsitsbandwidthcapability.Ifthetargetapplicationspecifiesahigherdi/dtorlowervoltagedeviation,therequirementcanonlybemetwithadditionaloutputcapacitordecoupling.Inthesecases,specialattentionmustbepaidtothetype,value,andESRofthecapacitorsselected.

Ifthetransientperformancerequirementsexceedthatspecifiedinthedatasheet,orthetotalamountofloadcapacitanceisabove3000µF,theselectionofoutputcapacitorsbecomesmoreimportant.

AdjustingtheOutputVoltage

TheVOAdjustcontrol(pin4)setstheoutputvoltageofthePTV03010Wproducttoavalueovertherange,0.8Vto2.5V.Theadjustmentmethodrequirestheadditionofasingleexternalresistor,RSET,thatmustbeconnecteddirectlybetweentheVOAdjustandtheregulator'soutputGND(pin1isrecommended).Withoutanadjustresistor,theoutputvoltageissettoitslowestvalue.Table2givesthepreferredvalueoftheexternalresistorforanumberofstandardvoltages,alongwiththeactualoutputvoltagethatthisresistancevalueprovides.Figure6showstheplacementoftherequiredresistor.

Table2.NearestStandardValuesofRSETforCommonOutputVoltages

VO

(Required)2.5V2V1.8V1.5V1.2V1V0.8V

RSET

(StandardValue)

2.21kΩ4.12kΩ5.49kΩ8.87kΩ17.4kΩ36.5kΩOpen

VO(Actual)2.502V2.010V1.803V1.504V1.202V1.005V0.800V

Forotheroutputvoltages,thevalueoftherequiredresistorcaneitherbecalculatedorsimplyselectedfromtherangeofvaluesgiveninTable3.Equation1maybeusedforcalculatingtheadjustresistorvalue.

0.8VRSET+10kW *2.49kWVO*0.8V(1)

PTV03010WGNDGNDVOAdjVOVO

CORSET,󰀀1%Figure6.VOAdjustResistorPlacement

8

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Table3.CalculatedValuesofRSETforOtherOutputVoltages

VO0.8000.8250.8500.8750.9000.9250.9500.9751.0001.0251.0501.0751.1001.1251.1501.1751.2001.2251.2501.3001.3501.400

RSETOpen318kΩ158kΩ104kΩ77.5kΩ61.5kΩ50.8kΩ43.2kΩ37.5kΩ33.1kΩ29.5kΩ26.6kΩ24.2kΩ22.1kΩ20.4kΩ18.8kΩ17.5kΩ16.3kΩ15.3kΩ13.5kΩ12.1kΩ10.8kΩ

VO1.4501.5001.5501.6001.6501.7001.7501.8001.8501.9001.9502.0002.0502.1002.1502.2002.2502.3002.3502.4002.4502.500

RSET9.82kΩ8.94kΩ8.18kΩ7.51kΩ6.92kΩ6.40kΩ5.93kΩ5.51kΩ5.13kΩ4.78kΩ4.47kΩ4.18kΩ3.91kΩ3.66kΩ3.44kΩ3.22kΩ3.03kΩ2.84kΩ2.67kΩ2.51kΩ2.36kΩ2.22kΩ

FeaturesofthePTH/PTVFamilyofNonisolated,Wide-OutputAdjustablePowerModules

POLA™Compatibility

ThePTH/PTVfamilyofnonisolated,wide-outputadjustablepowermodulesfromTexasInstrumentsareoptimizedforapplicationsthatrequireaflexible,high-performancemodulethatissmallinsize.EachoftheseproductsarePOLA™compatible.POLA-compatibleproductsareproducedbyanumberofmanufacturers,andoffercustomersadvanced,nonisolatedmoduleswiththesamefootprintandformfactor.POLApartsarealsoensuredtobeinteroperable,whichprovidescustomerswithasecond-sourceoption.

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Soft-StartPowerUp

TheAuto-TrackfeatureallowsthepowerupofmultiplePTH/PTVmodulestobedirectlycontrolledfromtheTrackpin.However,inastand-aloneconfiguration,orwhentheAuto-Trackfeatureisnotbeingused,theTrackpinisdirectlyconnectedtotheinputvoltage,VI(seeFigure7).3.3󰀀VVIGNDTrackPTV03010WGNDVOAdjust1.8󰀀VC1100mFC210mFRSET5.49󰀀kW1%,󰀀0.05󰀀WC3100mFLOADGNDFigure7.Power-UpApplicationCircuit

WhentheTrackpinisconnectedtotheinputvoltage,theAuto-Trackfunctionispermanentlydisengaged.Thisallowsthemoduletopowerupentirelyunderthecontrolofitsinternalsoft-startcircuitry.Whenpowerupisundersoft-startcontrol,theoutputvoltagerisestotheset-pointataquickerandmorelinearrate.

VI(2󰀀V/div)VO(1󰀀V/div)II(5A/div)t󰀀-Time󰀀=󰀀5󰀀ms/divFigure8.Power-UpWaveform

Fromthemomentavalidinputvoltageisapplied,thesoft-startcontrolintroducesashorttimedelay(typically8msto15ms)beforeallowingtheoutputvoltagetorise.Theoutputthenprogressivelyrisestothemoduleset-pointvoltage.Figure8showsthesoft-startpower-upcharacteristicofthePTV03010W,operatingfroma3.3-Vinputbusandconfiguredfora1.8-Voutput.Thewaveformsweremeasuredwitha5-AresistiveloadandtheAuto-Trackfeaturedisabled.Theinitialriseininputcurrentwhentheinputvoltagefirststartstoriseisthechargecurrentdrawnbytheinputcapacitors.Powerupiscompletewithin25ms.

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++GND

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TI

PTV03010WAH