一款采用PSM调制模式的AC-DC芯片的设计-豆柴文库

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一款采用PSM调制模式的AC-DC芯片的设计
Introduction
Inrecentyears,powerelectronicstechnologyhasbecomeincreasinglyimportantduetotheproliferationofenergy-efficientsystems.ThishasledtothedevelopmentofAC-DCconverters,whicharewidelyusedinnumerousapplications.OneofthecriticalaspectsofAC-DCconvertersistheneedforhighpower-density,whichrequiresanoptimaldesigntoensureefficientandreliableoperation.PSM(Pulse-WidthModulation)isapopularapproachusedtoregulatetheoutputofAC-DCconverters,enablingthemtodeliveranefficientpowersupply.
ThispaperaimstopresentthedesignofanAC-DCconverterbasedonthePSMmodulationapproach.Theproposedconverterisexpectedtodeliverhighpower-density,excellentefficiency,andreliableperformance.
PSMModulationApproach
PSMisapopularmodulationtechniquethatregulatestheoutputofanAC-DCconverterbyvaryingthepulsewidthoftheswitchingsignal.Theprimarypurposeofthisapproachistomaintainastablevoltageoutputfortheload,irrespectiveofanychangesintheinputvoltageorloadcurrent.PSMisarobustandhighlyefficientapproach,makingitsuitableforhigh-powerAC-DCconverters.TheswitchingfrequencyuseddeterminestheperformanceofthePSMapproach.
DesignoftheAC-DCConverter
TheproposedAC-DCconverterdesignisbasedonthePSMmodulationapproach.Figure1showstheblockdiagramoftheAC-DCconverterdesign.Theinputvoltageisfirstfilteredusingacapacitorandisthenrectifiedusingafull-bridgerectifier.Theoutputfromtherectifieristhenfedintoaboostconverter,whichstepsupthevoltagetoalevelsufficienttodrivetheload.
ThePSMapproachusedinthedesigninvolvesafixedcarrierfrequencyandavariabledutycycletoregulatetheoutputvoltage.Thedutycycleisvariedproportionaltotheload,ensuringastablevoltageoutputacrossdifferentloads.
Thecircuitcomponentswereselectedbasedontherequiredpowerratingandfrequencyresponse.Thedesignuseshigh-frequencyswitchingcomponentstoenablehighpower-densityandexcellentefficiency.
SimulationandAnalysis
TheAC-DCconverterdesignwassimulatedusingLTspicesoftwaretoevaluatetheperformanceoftheproposeddesign.Figure2showsthesimulationresultsfortheoutputvoltageandcu