TTOM: 0px; MARGIN: 20px 0px 0px; WORD-SPACING: 0px; FONT: 14px/25px 宋体, arial; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; PADDING-TOP: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BACKGROUND-COLOR: rgb(255,255,255); orphans: 2; widows: 2; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px"> 
假设使用4P,则


决定Duty cycle:
假设Np=44T,Ns=2T,VD=0.5(使用schottky Diode)

决定Ip 值:


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