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<h1>BUCK電路拓?fù)浼捌涔ぷ髟?/h1> <div id="nnrlndt" class="authorTimeSource"> <span>作者：</span> <span>時間：2011-12-28</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="hznxrzp" 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="rvzjdlj" 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="tbdpjzp" class="content" id="contentDiv" style="position:relative;"> <div id="blnzbhp" 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;"><p><span style="font-size: 14px"><font face="Verdana"><b><a class="contentlabel" href="http://www.ex-cimer.com/news/listbylabel/label/BUCK"><em>BUCK</em></a><a class="contentlabel" href="http://www.ex-cimer.com/news/listbylabel/label/電路"><em>電路</em></a><a class="contentlabel" href="http://www.ex-cimer.com/news/listbylabel/label/拓?fù)?><em>拓?fù)?/em></a></b></font></span></p>本文引用地址：<a href="http://www.ex-cimer.com/article/178116.htm">http://www.ex-cimer.com/article/178116.htm</a><p><span style="font-size: 14px"><font face="Verdana">T是全控元件(GTR,GTO,MOSFET,IGBT)，當(dāng)<img onload="if(this.width>620)this.width=620;" onclick="window.open(this.src)" style="cursor:pointer" src="http://editerupload.eepw.com.cn/fetch/20131009/178116_1_0.jpg" border="0" style="zoom: 1" alt="" />時，T導(dǎo)通。<br />D：續(xù)流二極管。<br />L和C組成LPF。</font></span></p><p><span style="font-size: 14px"><font face="Verdana"><img onload="if(this.width>620)this.width=620;" onclick="window.open(this.src)" style="cursor:pointer" height="177" src="http://editerupload.eepw.com.cn/fetch/20131009/178116_1_1.jpg" width="450" border="0" style="zoom: 1" alt="" /></font></span></p><p><span style="font-size: 14px"><font face="Verdana"><font face="Verdana">二、<a class="contentlabel" href="http://www.ex-cimer.com/news/listbylabel/label/工作"><em>工作</em></a><a class="contentlabel" href="http://www.ex-cimer.com/news/listbylabel/label/原理"><em>原理</em></a></font></font></span></p><p><span style="font-size: 14px"><font face="Verdana"><img onload="if(this.width>620)this.width=620;" onclick="window.open(this.src)" style="cursor:pointer" src="http://editerupload.eepw.com.cn/fetch/20131009/178116_1_2.jpg" border="0" style="width: 527px; zoom: 1; height: 329px" alt="" /></font></span></p><p><span style="font-size: 14px"><font face="Verdana"><font face="Verdana">四、假設(shè)及參數(shù)計算<br />1.T，D均為理想器件<br />2.L較大，使得在一個周期內(nèi)電流連續(xù)且無內(nèi)阻<br />3.直流輸出電壓U0為恒定<br />4.整個<a class="contentlabel" href="http://www.ex-cimer.com/news/listbylabel/label/電路"><em>電路</em></a>無功耗<br />5.<a class="contentlabel" href="http://www.ex-cimer.com/news/listbylabel/label/電路"><em>電路</em></a>已達(dá)穩(wěn)態(tài)<br /></font><img onload="if(this.width>620)this.width=620;" onclick="window.open(this.src)" style="cursor:pointer" src="http://editerupload.eepw.com.cn/fetch/20131009/178116_1_3.jpg" border="0" style="zoom: 1" alt="" /></font></span></p><p><span style="font-size: 14px"><font face="Verdana"><img onload="if(this.width>620)this.width=620;" onclick="window.open(this.src)" style="cursor:pointer" src="http://editerupload.eepw.com.cn/fetch/20131009/178116_1_4.jpg" border="0" style="width: 530px; zoom: 1; height: 396px" alt="" /></font></span></p><p><span style="font-size: 14px"><font face="Verdana"><img onload="if(this.width>620)this.width=620;" onclick="window.open(this.src)" style="cursor:pointer" height="286" src="http://editerupload.eepw.com.cn/fetch/20131009/178116_1_5.jpg" width="450" border="0" style="zoom: 1" alt="" /></font></span></p><p><span style="font-size: 14px"><font face="Verdana"><img onload="if(this.width>620)this.width=620;" onclick="window.open(this.src)" style="cursor:pointer" 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