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<article> <h1>源箝位零電壓開關(guān)DC-DC變換器拓?fù)涞难芯?/h1> <div id="xfjbvnt" class="authorTimeSource"> <span>作者：</span> <span>時間：2012-02-14</span> <span>來源：網(wǎng)絡(luò)</span> <link rel="stylesheet" type="text/css"/> <span style="float:right; width:150px;margin-right:0px; text-align:right;"> <div id="ffzdntt" class="nav0"> <ul> <li style="width:150px;"><a href="javascript:void(0);"><img src="http://www.ex-cimer.com/event/action/images/icon_add_4.png" width="20" border="0" align="absmiddle" />英飛凌汽車電子生態(tài)圈</a> <ul> <li style="width:150px;text-align:center;"><img src="http://www.ex-cimer.com/event/company/images/code_2.jpg" width="150"><br />掃碼關(guān)注<br />獲取最新最全汽車電子<br />技術(shù)方案與實用技巧</li> </ul> </li> </ul> </div> </span> <span style="float:right; width:30px;margin-right:0px; text-align:right;"><a rel="nofollow">收藏</a></span> </div> <div id="fpzdfvd" class="hAd4_Afinal20a_back">  <iframe id='a890e388' name='a890e388' src='https://ad.eepw.com.cn/www/delivery/afr.php?zoneid=88&cb=INSERT_RANDOM_NUMBER_HERE' frameborder='0' scrolling='no' width='660' height='60'><a target='_blank'><img src='https://ad.eepw.com.cn/www/delivery/avw.php?zoneid=88&cb=INSERT_RANDOM_NUMBER_HERE&n=a635e61e' border='0' alt='' /></a></iframe> </div> <div style="margin-top:28px;"></div> <div id="jbvrtbh" class="content" id="contentDiv" style="position:relative;"> <div id="nfjlpft" class="ad_300x180_Afinal13_back">  <iframe id='a225770a' name='a225770a' src='https://ad.eepw.com.cn/www/delivery/afr.php?zoneid=87&cb=INSERT_RANDOM_NUMBER_HERE' frameborder='0' scrolling='no' width='300' height='200'><a target='_blank'><img src='https://ad.eepw.com.cn/www/delivery/avw.php?zoneid=87&cb=INSERT_RANDOM_NUMBER_HERE&n=a576c0a2' border='0' alt='' /></a></iframe> </div> <span id="contentlabels" style="font-size:14px;"><span id="xplvzhf" class="Apple-style-span" style="font-family: Arial, Helvetica, sans-serif; font-size: 15px; line-height: 24px; background-color: rgb(255, 255, 255); ">1　引言　　<br style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; "><br style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; ">　　<a class="contentlabel" href="http://www.ex-cimer.com/news/listbylabel/label/有源箝位"><em>有源箝位</em></a>ZVS PWM DC-DC 變換器較傳統(tǒng)的PWM <a class="contentlabel" href="http://www.ex-cimer.com/news/listbylabel/label/DC-DC變換器"><em>DC-DC變換器</em></a>有很多的優(yōu)點(diǎn)，它可以改進(jìn)高頻變壓器的設(shè)計，改善它的性能，同時，變換起的主電路只增加了一個輔助開關(guān)管和一個箝位電容，實現(xiàn)起來相對比較容易。本文提出了ZVS <a class="contentlabel" href="http://www.ex-cimer.com/news/listbylabel/label/有源箝位"><em>有源箝位</em></a>單元模塊概念，并且在此基礎(chǔ)上，得出了六種（buck、boost，buck-boost、cuk、zeta、sepic）基本DC-DC 變換器不同形式的ZVS<a class="contentlabel" href="http://www.ex-cimer.com/news/listbylabel/label/有源箝位"><em>有源箝位</em></a>的拓?fù)浣Y(jié)構(gòu)，對其優(yōu)缺點(diǎn)進(jìn)行了分析和比較，并對其在實際中的應(yīng)用進(jìn)行了分析。<br style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; "><br style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; "><br style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; ">2　傳統(tǒng)有源箝位ZVS　DC-DC 變換器<br style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; "><br style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; ">　　如圖1所示，可以從boost型箝位隔離單端正激變換器獲得boost型有源箝位ZVS-PWM單元模塊。<br style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; "><center style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; "><div align="center" style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; "><img onload="if(this.width>620)this.width=620;" onclick="window.open(this.src)" style="cursor:pointer" src="http://editerupload.eepw.com.cn/fetch/20140213/231184_1_0.jpg" border="0" style="margin-top: 5px; margin-right: 10px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; border-top-width: 0px; border-right-width: 0px; border-bottom-width: 0px; border-left-width: 0px; border-style: initial; border-color: initial; "></div></center><br style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; ">在圖1中，能量的傳遞是通過buck單元實現(xiàn)的，而有源箝位功能則是通過boost單元實現(xiàn)的。同理，基于buck單元實現(xiàn)能量傳遞，可以得到buck、boost、buck-boost、cuk、zeta、sepic 箝位的電路拓?fù)?。如圖2所示。<br style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; ">如果將圖2拓?fù)浣Y(jié)構(gòu)進(jìn)行變換可以得到一種更為直觀的拓?fù)淙鐖D3所示。<br style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; ">從圖3中不難分離出六種不同的基本有源箝位ZVS-PWM單元模塊，即buck、boost、buck-boost、cuk、zeta、和sepic箝位單元模塊，如圖4所示。<br style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; "><center style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; "><div align="center" style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; "><img onload="if(this.width>620)this.width=620;" onclick="window.open(this.src)" style="cursor:pointer" src="http://editerupload.eepw.com.cn/fetch/20140213/231184_1_1.jpg" border="0" style="margin-top: 5px; margin-right: 10px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; border-top-width: 0px; border-right-width: 0px; border-bottom-width: 0px; border-left-width: 0px; border-style: initial; border-color: initial; "></div></center><br style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; "><center style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; "><div align="center" style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; "><img onload="if(this.width>620)this.width=620;" onclick="window.open(this.src)" style="cursor:pointer" src="http://editerupload.eepw.com.cn/fetch/20140213/231184_1_2.jpg" border="0" style="margin-top: 5px; margin-right: 10px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; border-top-width: 0px; border-right-width: 0px; border-bottom-width: 0px; border-left-width: 0px; border-style: initial; border-color: initial; "></div></center><br style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; "><center style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; "><div align="center" style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; "><img onload="if(this.width>620)this.width=620;" onclick="window.open(this.src)" style="cursor:pointer" src="http://editerupload.eepw.com.cn/fetch/20140213/231184_1_3.jpg" border="0" style="margin-top: 5px; margin-right: 10px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; border-top-width: 0px; border-right-width: 0px; border-bottom-width: 0px; border-left-width: 0px; border-style: initial; border-color: initial; "></div></center><br style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; "><br style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; ">2.2傳統(tǒng)型有源箝位ZVS-PWM DC-DC 變換器<br style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; "><br style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; ">　　結(jié)合圖4的六中有源箝位ZVS-PWM單元模塊和六種基本的能量傳遞單元，可以獲得36種不同類型的有源箝位ZVS-PWM　<a class="contentlabel" href="http://www.ex-cimer.com/news/listbylabel/label/DC-DC變換器"><em>DC-DC變換器</em></a>的拓?fù)浣Y(jié)構(gòu)，并且根據(jù)能量傳遞的不同，可以分為六種，即buck、boost、buck-boost、cuk、zeta和sepic變換器.為了節(jié)省篇幅，圖5給出了buck-boost和boost為能量傳遞單元的有源箝位拓?fù)?。（buck型變換器在圖2中已經(jīng)給出）<br style="margin-top: 0px; margin-right: 0px; 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