TechnicalTrainingAdlsongSMPSTopologiesTheBuckConverterBuckBuckConverterStepDownVoltageRegulatorBuckState1:Sison,theinductorcurrentriseslinearly:oinLVVdtdiL−=SoinpkLfDVVI)(−=∆State2:Sisoff,theinductorcurrentdecreaseslinearly:oLVdtdiL=−SopkLfDVI)1(−=∆VoltsSecondBalance:Vo=DVin,D=Ton/TVin⋅Iin=Vo⋅Io,Iin=IL=Io/DBuckBuckCCMDCMBuckThevoltagerippleofoutputcapacitor:iL>Io,Coutischarged1)Integralduringtheperiod2228)1(11SoutfoTonTonToffTonTonCCofCLVDdtiCdtiCU−=+=∆∫∫+2)Thechargeduringtheperiod28)1(2221SoutfooutoLpkfCLVDCQUTIQ−=∆=∆∆=∆sTakeESRintoAccount:SfoLpkofLESRVDIESRU•−=∆•=∆)1(BuckCriticalconditionbetweenDCMandCCMSfoinLofLDVVII2)(21max−==PowerBalanceDCMSfoinLofLDVVII2)(21max−=VinmaxIF(AV)>Io(1-D)fS=1/TSD=Ton/TSVo=DVin2TheBoostConverterBoostBoostConverterStepUpVoltageRegulatorBoostState1:Sison,thei
