l6599设计表格.xls

l6599设计表格.xls

《l6599设计表格.xls》由会员分享，可在线阅读，更多相关《l6599设计表格.xls（7页珍藏版）》请在冰豆网上搜索。

HALF-BRIDGELLCRESONANTCONVERTERL6599-basedDesignSpreadsheetVersion1.0ThisworkbookenablestheusertodesignanL6599-basedsingle-outputhalf-bridgeLLCresonantconverter.Theprocedureisintendedforaconverterworkingwithafront-endPFCpreregulatorprovidingthesupplybustotheresonantstage.Itiscomposedof5worksheets（besidesthepresentone）,eachdedicatedtoaspecifictask:

EL_SPEC:

inputofconverterselectricalspecificationandofsomepre-designchoicesMOS+OUTPUT_STAGE:

selectionofthepowerswitch（MOSFET）andofthesecondaryrectifierandoutputcapacitorRES_STAGE:

calculationoftheresonantconverterparametersL6599:

selectionofICbiasingcomponentsSUMMARY:

summarizesthecalculationresultsandshowsthebasicelectricalschematicItisrecommendedtousetheworkbookstartingfromthefirstsheetandproceedingfollowingtheordershown.Ineachworksheet,cyancellsrefertodatathatmustbeenteredbytheUser,yellowcellsrefertocalculationresultswhichneedsafurthercheckorastandardvaluechoice.ELECTRICALSPECIFICATIONS:

enterdataintocyancellsConverterspecification:

NOTES:

NominalsupplyBUSvoltage:

V.dc.nom=390（V）wheretheoperatingfrequencyequalstheresonantfrequencyf.sw=f.rMinimumsupplyBUSvoltage:

V.dc.min=320（V）dependingonthehold-upcapabilityofthePFCpre-regulatorMaximumsupplyBUSvoltageV.dc.max=420（V）dependingontheOVPlevelofthePFCpre-regulatorNominaloutputvoltage:

V.out=200（V）outputrequirementsMaximumoutputpower:

P.out=400（W）Outputvoltageripple:

Vout=100（mV）Expectedefficiency:

%=97.5%onlyresonantconvertercircuitPre-designchoices:

Minimumoperatingfrequency:

f.sw.min=75（kHz）suggestion:

1:

2rangeMaximumoperatingfrequency:

f.sw.max=150（kHz）Straycapacitanceathalf-bridgenode:

C.stray=120（pF）foreseenvaluewithoutC.osscontributionSecondaryoutputrectifierconfiguration:

K.conf=2K.conf=1incaseoffullbridgerectificationK.conf=2incaseoftransformercentertapwindingHALF-BRIDGEMOSFETSELECTION:

enterdataintocyancellsHalf-bridgemosfetstress:

I.MOS=2.014（Arms）estimatedmaxoperatingdraincurrentV.DS=420（V）maxoperatingdrain-sourcevoltageV.（br）.DSS=500（V）suggestedbreakdownvoltageR.（DS）on=0.300（）suggestedONresistanceat25CSelectthesuitablemosfetfromYourdata-baseandwritetherequiredparametervaluesbelow:

Mosfettype:

STP14NK50ZFPFillwithyourselectedpartnumberChosenmosfetparameters:

R.DS.on=0.35（）ONresistanceat25C（frommosfetdata-sheet）k.mos=1.6TemperaturemultiplierforRds.ONat100CC.oss=90（pF）EffectivedraincapacitanceOUTPUTDIODESELECTION:

Outputdiodestress:

I.DIODE=1.571（Arms）estimatedmaxdiodermscurrentI.D.avg=1.000（Aavg）estimatedmaxdiodeavgcurrentV.RRM=480（V）minimumsuggestedbreakdownvoltage（with20%derating）SelectthesuitablediodefromYourdata-baseandwritetherequiredparametervaluesbelow:

Diodetype:

STTH8L06FPFillwithyourselectedpartnumberChosendiodeparameters:

V.F=1.06（V）diodeforwarddropthreshold（fromdiodedata-sheet）R.d=36（m）diodedynamicresistanceI.R=240（A）diodeleakagecurrentPowerlosses:

Maxtotalpowerdissipation:

P.diss.tot=10.256（W）forexpectedefficiencyMosfetpowerdissipation:

P.d.mos=4.578（W）（totaldissipationofhalf-bridgemosfets）Diodepowerdissipation:

P.d.rect=2.394（W）（totaldissipationofoutputdiodes）OUTPUTCAPACITORSELECTION:

Outputvoltageripple:

Vout=100（mV）MaxcapacitorESR:

ESR.max=32（m）Capacitorripplecurrent:

I.o.ac.max=0.967（A）HALF-BRIDGERESONANTCONVERTERDESIGN:

enterdataintocyancellsParameterschoice:

Resonancefrequency:

f.r=118（kHz）selectavaluebetweenf.sw.minandf.sw.msxMarginfactorforQ.minvalue:

k.marg=0.94startingvalueintherange:

0.80-0.95Calculations:

Idealtransformertransferratio:

n=0.970Maximumrequiredgain:

M.max=1.219Minimumrequiredgain:

M.min=0.929Maxnormalizedfrequency:

f.n.max=1.271ACequivalentresistance:

R.ac=76.649（）Inductanceratio（L.r/L.m）:

=0.202Minimumqualityfactorvalue:

Q.zvs=0.441Minoperatingfrequency:

f.sw.Min=75.063（kHz）Incasethecalculatedminfrequencyf.sw.MinislowerMinimumnormalizedfrequency:

f.n.min=0.636orhigherthantheexpectedfrequencyf.sw.min,pleaseincreaseordecreasetheresonancefrequencyf.r,unlessPleasecheck=f.sw.min=75（kHz）youaccepttheobtainedminimumswitchingfrequencyvalue.Calculatedresonantcapacitorvalue:

C.r=39.930（nF）Pleaseusethehigherstandardvalue:

C.r.std=40（nF）Transformerturnratio:

N.T=1.063Transformerleakageinductance:

L.r=45.000（H）Transformerprimaryinductance:

L.p=268.000（H）PrimarysidermscurrentI.prim.rms=2.859（A）SecondarysidermscurrentI.sec.rms=1.571（A）Pleasecheck=X=0.088Incasetherelationship:

TgXisnotverified,Tg=0.094choosealowervaluefork.marg,anditeratetheprocess.L6599PERIPHERALCOMPONENTSDESIGN:

enterdataintocyancellsMinimumoperatingfrequency:

f.sw.Min=75.06（kHz）FromresonantstagecalculationsheetMaximumoperatingfrequency:

f.sw.max=150.00（kHz）FromelectricalspecsheetStart-upfrequency:

f.start=300（kHz