Transcription of UCC28070 300-WInterleaved PFC Pre-RegulatorDesign Review
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UCC28070 300-WInterleaved PFC Pre-RegulatorDesign Review
ApplicationReportSLUA479B August2008 RevisedJuly2010 UCC28070300-WInterleavedPFCPre-Regulator DesignReviewMIchaelO' madepossiblethroughdistributingthepowero vertwointerleavedboostconvertersandthein ductorripplecurrentcancellationthatoccur swithinterleaving,reference[5].Thisappli cationnotewillreviewthedesignofa300 Wtwo-phaseinterleavedpowerfactorcorrecte d(PFC) ,reference[7].1 DesignGoalsThespecificationsforthisdesig nwerechosenbasedonthepowerrequirementsof a (VIN_MIN)(VIN_MAX)VVOUTO utputvoltage39047 HzLinefrequency63Hz(fLINE) August2008 RevisedJuly2010 UCC28070300-WInterleavedPFCPre-Regulator DesignReviewCopyright 2008 2010,TexasInstrumentsIncorporated+ VinVOUT12V to a DesignReviewSLUA479B August2008 RevisedJuly2010 Copyright 2008 2010,TexasInstrumentsIncorporatedINL1IK( D) =IDD1 2DK(D) =if D is < 05 = D--2D 1K(D) =if D is > - Duty CycleK(D)= inductorripplecurrentreductionthatis showtheratioofinputripplecurrent( IIN) toindividualinductorripplecurrent( IL1) in a two-phaseinterleavedPFCasa functionofdutycycle(D).
Application Report SLUA479B– August 2008– Revised July 2010 UCC28070 300-WInterleaved PFC Pre-RegulatorDesign Review MIchael O'Loughlin..... PMP -Power Supply Control Products
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