〈淺析MOSFET同步整流BUCK的電流時(shí)序〉
排除死區(qū)時(shí)間,時(shí)序圖如下:

500) {this.resized=true; this.width=500; this.alt='這是一張縮略圖,點(diǎn)擊可放大。\n按住CTRL,滾動(dòng)鼠標(biāo)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/48/1167308478.gif');}" onmousewheel="return imgzoom(this);">
先分析CCM狀態(tài):

500) {this.resized=true; this.width=500; this.alt='這是一張縮略圖,點(diǎn)擊可放大。\n按住CTRL,滾動(dòng)鼠標(biāo)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(shí)間,V1導(dǎo)通,電感電壓左正右負(fù),電流從V1漏極流向源極,并隨時(shí)間增大;

500) {this.resized=true; this.width=500; this.alt='這是一張縮略圖,點(diǎn)擊可放大。\n按住CTRL,滾動(dòng)鼠標(biāo)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(shí)間,V2導(dǎo)通,電感電壓左負(fù)右正,電流從V1源極流向漏極,并隨時(shí)間減小.