CLC滤波电路参数对纹波抑制的影响

2013－05－032013－06－06312201421006－9348201402－0183－04CLC余明扬，余斌，潘俊东，赖科星410012CLC。MAX606EUA+、CLC。。CLC。TM564BEffectsofCLCFilterCircuitParametersonＲippleSuppressionYUMing－yangYUBinPANJun－dongLAIKe－xingSchoolofInformationScienceandEngineeringCentralSouthUniversityChangshaHunan410012ChinaABSTＲACTSignificantripplestriggeredbyswitchingpowersupplyalwayscausenegativeimpactsonelectricalsys-temwhichcanbeweakenbyCLCfiltercircuits．WebyswitchingvaluesofcapacitancesandinductancesanalyzedaCLCfiltercircuitfromtheorysimulationsandfactsthroughtheanalysisoftransferfunctionscomputersimula-tionsexperimentsaboutswitchingpowersupplydesignedwithMAX606EUA+topenetratetheinfluencesofcapacitances'andinductances'distributedparametersonrestrictionsonripples．Theexperimentalresultanddatain-dictthattherippleamplitudesareinverselyproportionaltoinductancesandcapacitancesmeanwhilecapacitorshavemoreconspicuouseffectsonrippleamplitudeswithincreasinginductancesandcapacitanceswhereascapacitors'sizesandprizesincreasewiththat．MoreoverAluminumelectrolyticcapacitors'filtereffectsarelesssignificantthanTan-talumelectrolyticcapacitorsinceAluminumelectrolyticcapacitors'equivalentresistancesarehigher．ThusitisbetterforresearcherstoutilizerelativelylargervaluesofcapacitanceswithlowerequivalentresistancesandinductanceswhendesignaCLCfiltercircuit．KEYWOＲDSSwitchpowersupplyFilterEquivalentseriesresistance1、、、、、。。1。C、LC、CLC。πCLC2。CLC3。。MATLABCLC—381—MAX60612VCLC。、CLC。2CLC1CLC。CinUiLLCoutCinCoutＲL。CinCoutL。L。ＲCinＲCout。CLC。1CLC3。ＲS5ΩＲL180ΩUi12VUoL、Cin、Cout。Cin=Cout42。2CLCGω=UoUi=Ｒs+ＲzＲs+Ｒz－LCω2Ｒs+Ｒz+jLω+2ＲsＲzCω－ＲsＲzLC2ω31CLC。Fω=1|Gω|=Ｒs+Ｒz－LCω2Ｒs+Ｒz2+Lω+2ＲsＲzCω－ＲsＲzLC2ω3槡2Ｒs+Ｒz2LCFω3FωLC。3Fω。。。4CLC、。MatlabSimulinkCLC。LC。ESＲ5—481—。ESＲ。。ESＲESＲESＲPCB。Scope4。560.5Ω1.5Ω1.8V1.3kHz10mH220μF5Ω180Ω。4CLC51.5Ω60.5Ω5CLC5．1。、。MAX606CMOSDC/DC3.0～5.5V5V/12VVin～12.5V±4%。MAX6061MHz5V180mAPCMCIA、、。7－23V～23VMAX606CLC。5CLCL、Cin、Cout。75．2TDS2022B200MHz2GS/s6、FLUKE17B180Ω。5．2.12.520V12.172V。8－Vp－p=460mVf=1.374Hz。9180Ω－1.80V。。5．2.2220μF734310V227DCLC－10。。1110mH。—581—8500mV/div1.00ms/div91.00V/div2.50ms/div101110mH500mV/div10.0μs/div5．2.3CLC10mHCLC－12。。。13220μF。121310mH500mV/div10.0μs/div6。。。1．J．200616－10．2．CLCJ．201191128－1130．3．、J．20091140－43．4．D．2005．5．J．414—681—21。11－21.3569.480.892－23.1256.780.913－31.5686.420.881－19.5667.410.922－18.6788.290.933－15.6755.640.87Apriori1－32.1868.120.852－34.1271.320.923－34.1171.340.881－2.3123.650.912－1.7825.480.933－3.2727.230.875。。。。1LucianoAlparoneStefanoBaronti．AGlobalQualityMeasurementofPan－SharpenedMultispectralImageryJ．GeoscienceandＲe-moteSensingLetters2004－10313－3172．J．20081160222－225．3MGonzalez－AudicanaJLSaletaＲGCatalandＲGarcia．Fu-sionofmultispectralandpanchromaticimagesusingimprovedIHSandPCAmergersbasedonwaveletdecompositionJ．IEEETransactionsonGeoscienceandＲemoteSensing．200414261291－1299．4．J．2007－51－40．5JYThamLShenSLLeeHHTan．Ageneralapproachfora-nalysisandapplicationofdiscretemulti－wavelettransformsJ．IEEETransactionsonSignalProcessing2000482457－464．6．J．200426138－41．7．J2013829160－162．8．J．2004981002－1007．9．J．2007362236－239．10IDeBChandaBChattopadhyay．Enhancingeffectivedepth－of－fieldbyimagefusionusingmathematicalmorphologyJ．Im-ageandVisionComputing200624121278－1287．1980－。1981－。18619941257－58．6．EMIJ．2005236－40．1964－。1992－。1990－。1992－。—414—