〈淺析MOSFET同步整流BUCK的電流時序〉
排除死區(qū)時間,時序圖如下:

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先分析CCM狀態(tài):

500) {this.resized=true; this.width=500; this.alt='這是一張縮略圖,點擊可放大。\n按住CTRL,滾動鼠標滾輪可自由縮放';this.style.cursor='hand'}" onclick="if(!this.resized) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/48/1167308289.gif');}" onmousewheel="return imgzoom(this);">
在t0-t2時間,V1導通,電感電壓左正右負,電流從V1漏極流向源極,并隨時間增大;

500) {this.resized=true; this.width=500; this.alt='這是一張縮略圖,點擊可放大。\n按住CTRL,滾動鼠標滾輪可自由縮放';this.style.cursor='hand'}" onclick="if(!this.resized) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/48/1167308307.gif');}" onmousewheel="return imgzoom(this);">
在t2-t4時間,V2導通,電感電壓左負右正,電流從V1源極流向漏極,并隨時間減小.