透徹分析：電壓雙象限Buck-Boost電路拓?fù)?/title> <meta http-equiv="Cache-Control" content="no-transform" /> <meta http-equiv="Cache-Control" content="no-siteapp" /> <script>var V_PATH="/";window.onerror=function(){ return true; };</script> </head> <script src="https://dup.baidustatic.com/js/ds.js"></script> <body style=""> <div style="position:fixed;left:-9000px;top:-9000px;"><blockquote id="pryje"></blockquote><ins id="pryje"></ins><noframes id="pryje"></noframes><strong id="pryje"><acronym id="pryje"><legend id="pryje"></legend></acronym></strong><s id="pryje"><wbr id="pryje"><address id="pryje"></address></wbr></s><wbr id="pryje"></wbr><span id="pryje"></span><nav id="pryje"></nav><font id="pryje"><object id="pryje"><source id="pryje"></source></object></font><nav id="pryje"><object id="pryje"></object></nav><sup id="pryje"></sup><menu id="pryje"><s id="pryje"></s></menu><thead id="pryje"><div id="pryje"><td id="pryje"><em id="pryje"></em></td></div></thead><b id="pryje"></b><big id="pryje"></big><button id="pryje"><div id="pryje"><listing id="pryje"></listing></div></button><em id="pryje"><progress id="pryje"><thead id="pryje"><input id="pryje"></input></thead></progress></em><u id="pryje"><rp id="pryje"><noscript id="pryje"></noscript></rp></u><video id="pryje"><var id="pryje"><rt id="pryje"></rt></var></video><delect id="pryje"><dl id="pryje"><video id="pryje"></video></dl></delect><tt id="pryje"></tt><menuitem id="pryje"><label id="pryje"><p id="pryje"><noframes id="pryje"></noframes></p></label></menuitem><delect id="pryje"></delect><dd id="pryje"><nav id="pryje"><object id="pryje"></object></nav></dd><source id="pryje"><form id="pryje"><nobr id="pryje"><input id="pryje"></input></nobr></form></source><sup id="pryje"><li id="pryje"></li></sup><ol id="pryje"></ol><nav id="pryje"></nav><progress id="pryje"></progress><table id="pryje"></table><label id="pryje"></label><em id="pryje"><progress id="pryje"></progress></em><var id="pryje"></var><ol id="pryje"><table id="pryje"><menu id="pryje"><pre id="pryje"></pre></menu></table></ol><ol id="pryje"><rp id="pryje"></rp></ol><dfn id="pryje"></dfn><video id="pryje"></video><progress id="pryje"></progress><b id="pryje"><ol id="pryje"><option id="pryje"><table id="pryje"></table></option></ol></b><blockquote id="pryje"></blockquote><del id="pryje"><button id="pryje"><font id="pryje"></font></button></del><table id="pryje"><menu id="pryje"><mark id="pryje"><ruby id="pryje"></ruby></mark></menu></table><b id="pryje"></b><noframes id="pryje"></noframes><legend id="pryje"></legend><big id="pryje"><menuitem id="pryje"></menuitem></big><track id="pryje"></track><pre id="pryje"></pre><pre id="pryje"><address id="pryje"></address></pre><nobr id="pryje"></nobr> <menu id="pryje"><del id="pryje"></del></menu><span id="pryje"><table id="pryje"><menu id="pryje"></menu></table></span><meter id="pryje"><ins id="pryje"><kbd id="pryje"><em id="pryje"></em></kbd></ins></meter><kbd id="pryje"><noscript id="pryje"><bdo id="pryje"></bdo></noscript></kbd><s id="pryje"></s><big id="pryje"></big><ruby id="pryje"></ruby><b id="pryje"><strike id="pryje"><td id="pryje"></td></strike></b><blockquote id="pryje"><sup id="pryje"><li id="pryje"></li></sup></blockquote><s id="pryje"></s><nav id="pryje"><delect id="pryje"><output id="pryje"><legend id="pryje"></legend></output></delect></nav><form id="pryje"><thead id="pryje"></thead></form><s id="pryje"></s><sub id="pryje"></sub><listing id="pryje"><strong id="pryje"></strong></listing><address id="pryje"><font id="pryje"><strong id="pryje"><acronym id="pryje"></acronym></strong></font></address><sup id="pryje"></sup><td id="pryje"></td><listing id="pryje"><menuitem id="pryje"><label id="pryje"><p id="pryje"></p></label></menuitem></listing><video id="pryje"><tbody id="pryje"><dd id="pryje"><samp id="pryje"></samp></dd></tbody></video><s id="pryje"></s><listing id="pryje"><menuitem id="pryje"><label id="pryje"><p id="pryje"></p></label></menuitem></listing><big id="pryje"></big><mark id="pryje"></mark><listing id="pryje"></listing><noscript id="pryje"></noscript><nav id="pryje"><object id="pryje"></object></nav><rp id="pryje"></rp><sub id="pryje"><cite id="pryje"><s id="pryje"></s></cite></sub><td id="pryje"><sub id="pryje"><menu id="pryje"></menu></sub></td><nav id="pryje"><delect id="pryje"></delect></nav><del id="pryje"><pre id="pryje"></pre></del><bdo id="pryje"><mark id="pryje"></mark></bdo><sup id="pryje"><li id="pryje"><span id="pryje"><xmp id="pryje"></xmp></span></li></sup><em id="pryje"><progress id="pryje"></progress></em><td id="pryje"></td><form id="pryje"><thead id="pryje"></thead></form><label id="pryje"><tr id="pryje"><noframes id="pryje"></noframes></tr></label><nav id="pryje"><delect id="pryje"><dl id="pryje"></dl></delect></nav><option id="pryje"></option><noframes id="pryje"></noframes><object id="pryje"><source id="pryje"></source></object><table id="pryje"><bdo id="pryje"></bdo></table><thead id="pryje"><input id="pryje"></input></thead><big id="pryje"><menuitem id="pryje"></menuitem></big><track id="pryje"></track><mark id="pryje"></mark><track id="pryje"><listing id="pryje"><strong id="pryje"><label id="pryje"></label></strong></listing></track><em id="pryje"><progress id="pryje"><optgroup id="pryje"></optgroup></progress></em><font id="pryje"><object id="pryje"><source id="pryje"></source></object></font> <button id="pryje"><div id="pryje"><listing id="pryje"><menuitem id="pryje"></menuitem></listing></div></button><ol id="pryje"></ol><tbody id="pryje"><meter id="pryje"><font id="pryje"><i id="pryje"></i></font></meter></tbody><menu id="pryje"></menu><var id="pryje"></var><mark id="pryje"><ruby id="pryje"><li id="pryje"><big id="pryje"></big></li></ruby></mark><output id="pryje"><p id="pryje"><tbody id="pryje"><meter id="pryje"></meter></tbody></p></output><dl id="pryje"></dl><progress id="pryje"><blockquote id="pryje"><b id="pryje"></b></blockquote></progress><listing id="pryje"></listing><ruby id="pryje"><track id="pryje"><td id="pryje"><xmp id="pryje"></xmp></td></track></ruby><th id="pryje"><bdo id="pryje"><tt id="pryje"></tt></bdo></th><table id="pryje"><menu id="pryje"><del id="pryje"></del></menu></table><menu id="pryje"></menu><ruby id="pryje"><track id="pryje"></track></ruby><em id="pryje"></em><th id="pryje"></th><ol id="pryje"><span id="pryje"></span></ol><tbody id="pryje"><dd id="pryje"><font id="pryje"><i id="pryje"></i></font></dd></tbody><noframes id="pryje"><meter id="pryje"><nav id="pryje"><delect id="pryje"></delect></nav></meter></noframes><kbd id="pryje"><th id="pryje"><progress id="pryje"><blockquote id="pryje"></blockquote></progress></th></kbd><mark id="pryje"><b id="pryje"><strike id="pryje"></strike></b></mark><legend id="pryje"><nobr id="pryje"></nobr></legend><ol id="pryje"></ol><tbody id="pryje"><code id="pryje"><ins id="pryje"></ins></code></tbody><ruby id="pryje"></ruby><listing id="pryje"><strong id="pryje"></strong></listing><nobr id="pryje"><code id="pryje"></code></nobr><delect id="pryje"></delect><legend id="pryje"><nobr id="pryje"></nobr></legend><nobr id="pryje"><var id="pryje"><u id="pryje"></u></var></nobr><source id="pryje"></source><table id="pryje"><dfn id="pryje"><tt id="pryje"><button id="pryje"></button></tt></dfn></table><del id="pryje"><button id="pryje"></button></del><span id="pryje"><sub id="pryje"><cite id="pryje"></cite></sub></span><span id="pryje"><table id="pryje"><dfn id="pryje"></dfn></table></span><big id="pryje"><xmp id="pryje"><label id="pryje"></label></xmp></big><sub id="pryje"><cite id="pryje"><s id="pryje"><pre id="pryje"></pre></s></cite></sub><p id="pryje"></p><delect id="pryje"><dl id="pryje"><form id="pryje"><thead id="pryje"></thead></form></dl></delect><ol id="pryje"><td id="pryje"><table id="pryje"><menu id="pryje"></menu></table></td></ol><progress id="pryje"></progress><sup id="pryje"></sup><font id="pryje"></font><thead id="pryje"><b id="pryje"></b></thead><del id="pryje"></del><tr id="pryje"></tr><acronym id="pryje"><legend id="pryje"></legend></acronym><pre id="pryje"></pre><nobr id="pryje"></nobr></div>  <div id="df1r7r1" class="hTopBar" id="hTopBar" style="z-index:999999999"> <div id="9z3xn99" class="hLogo"> <a href="http://www.ex-cimer.com" target="_blank" title="電子產(chǎn)品世界"><img src="https://webstorage.eepw.com.cn/css/2013/article/headerImg/EEPW_logo.png" /></a> </div> <nav> <ul> <li><a href="http://www.ex-cimer.com/news" target="_blank">新聞</a></li> <li><a target="_blank">研討會(huì)</a></li> <li id="hDesign" class="hMenu">設(shè)計(jì)<img src="https://webstorage.eepw.com.cn/css/2013/article/images/arrow1.jpg" class="hArrow" /> <div class="zb1flbj" id="hDesignMenu"> <ul class="cTxt"> <li><a href="http://www.ex-cimer.com/info/industry/special/embedded" target="_blank">嵌入式系統(tǒng)</a></li> <li><a href="http://www.ex-cimer.com/info/industry/special/component" target="_blank">元件/連接器</a></li> <li><a href="http://www.ex-cimer.com/info/industry/special/power" target="_blank">電源與新能源</a></li> <li><a href="http://www.ex-cimer.com/info/industry/special/safety" target="_blank">安全與國防</a></li> <li><a href="http://www.ex-cimer.com/info/industry/special/auto" target="_blank">汽車電子</a></li> <li><a href="http://www.ex-cimer.com/info/industry/special/eda" target="_blank">EDA/PCB</a></li> <li><a href="http://www.ex-cimer.com/info/industry/special/consume" target="_blank">消費(fèi)電子</a></li> <li><a href="http://www.ex-cimer.com/info/industry/special/control" target="_blank">工業(yè)自動(dòng)化</a></li> <li><a href="http://www.ex-cimer.com/info/industry/special/analog" target="_blank">模擬技術(shù)</a></li> <li><a href="http://www.ex-cimer.com/info/industry/special/medical" target="_blank">醫(yī)療電子</a></li> <li><a href="http://www.ex-cimer.com/info/industry/special/tm" target="_blank">測試測量</a></li> <li><a href="http://www.ex-cimer.com/info/industry/special/wireless" target="_blank">通信技術(shù)</a></li> <li><a href="http://www.ex-cimer.com/info/industry/special/led" target="_blank">光電顯示</a></li> <li><a href="http://www.ex-cimer.com/info/industry/special/network" target="_blank">網(wǎng)絡(luò)與存儲</a></li> <li><a href="http://www.ex-cimer.com/info/industry/special/smart" target="_blank">智能計(jì)算</a></li> <li><a href="http://www.ex-cimer.com/info/industry/special/iot" target="_blank">物聯(lián)網(wǎng)與傳感器</a></li> <li><a href="http://www.ex-cimer.com/info/industry/special/robot" target="_blank">機(jī)器人</a></li> </ul> </div> </li> <li id="hCommunity" class="hMenu">社區(qū)<img src="https://webstorage.eepw.com.cn/css/2013/article/images/arrow1.jpg" class="hArrow" /> <div class="thz9rft" id="hCommunityMenu"> <ul class="cTxt"> <li><a target="_blank"><span><img src="https://webstorage.eepw.com.cn/css/2013/article/headerImg/forum_icon.png"></span>論壇</a></li> <li><a target="_blank"><span><img src="https://webstorage.eepw.com.cn/css/2013/article/headerImg/board_icon.png"></span>開發(fā)板試用</a></li> <li><a target="_blank"><span><img src="https://webstorage.eepw.com.cn/css/2013/article/headerImg/blog_icon.png"></span>博客</a></li> <li><a href="http://www.ex-cimer.com/activity/act" target="_blank"><span><img src="https://webstorage.eepw.com.cn/css/2013/article/headerImg/center_icon.png"></span>活動(dòng)中心</a></li> <li><a target="_blank"><span><img src="https://webstorage.eepw.com.cn/css/2013/article/headerImg/gif_icon.png"></span>積分禮品</a></li> </ul> </div> </li> <li id="hCommunityM" class="hMenu"> <a >技術(shù)匯</a><img src="https://webstorage.eepw.com.cn/css/2013/article/images/arrow1.jpg" class="hArrow" /> <div class="vfhl9pz" id="hCommunityMMenu"> <ul class="logo"> <li><a target="_blank"><em><img src="https://webstorage.eepw.com.cn/css/2013/article/headerImg/PI.png" /></em><span>PI技術(shù)專區(qū)</span></a></li> <li><a target="_blank"><em><img src="https://webstorage.eepw.com.cn/css/2013/article/headerImg/ADI.png" /></em><span>ADI技術(shù)專區(qū)</span></a></li> <li><a target="_blank"><em><img src="https://webstorage.eepw.com.cn/css/2013/article/headerImg/Maxim2.png" /></em><span>美信技術(shù)專區(qū)</span></a></li> <li><a target="_blank"><em><img src="https://webstorage.eepw.com.cn/css/2013/article/headerImg/advantech.png" /></em><span>研華技術(shù)專區(qū)</span></a></li> <li><a target="_blank"><em><img src="https://webstorage.eepw.com.cn/css/2013/article/headerImg/burnon.png" /></em><span>貝能技術(shù)社區(qū)</span></a></li> <li><a target="_blank"><em><img src="https://webstorage.eepw.com.cn/css/2013/article/headerImg/FLUKE.png" /></em><span>Fluke技術(shù)社區(qū)</span></a></li> <li><a target="_blank"><em><img src="https://webstorage.eepw.com.cn/css/2013/article/headerImg/XILINX.png" /></em><span>ZYNQ技術(shù)社區(qū)</span></a></li> <li><a target="_blank"><em><img src="https://webstorage.eepw.com.cn/css/2013/article/headerImg/SEKORM.png" /></em><span>世強(qiáng)專區(qū)技術(shù)社區(qū)</span></a></li> <li><a target="_blank"><em><img src="https://webstorage.eepw.com.cn/css/2013/article/headerImg/MICROCHIP.png" /></em><span>Microchip資源專區(qū)</span></a></li> <li><a href="http://www.ex-cimer.com/event/action/Microchip/index.html" target="_blank"><em><img src="https://webstorage.eepw.com.cn/css/2013/article/headerImg/MICROCHIP.png" /></em><span>Microchip視頻專區(qū)</span></a></li> <li><a target="_blank"><em><img src="https://webstorage.eepw.com.cn/css/2013/article/headerImg/intelQuark.png" /></em><span>Quark技術(shù)社區(qū)</span></a></li> <li><a target="_blank"><em><img src="https://webstorage.eepw.com.cn/css/2013/article/headerImg/XILINX.png" /></em><span>Xilinx社區(qū)</span></a></li> <li><a target="_blank"><em><img src="https://webstorage.eepw.com.cn/css/2013/article/headerImg/Mouser.png" /></em><span>MultiSIM BLUE</span></a></li> <li><a target="_blank"><em><img src="https://webstorage.eepw.com.cn/css/2013/article/headerImg/Andes.png" /></em><span>Andes專區(qū)</span></a></li> <li><a target="_blank"><em><img src="https://webstorage.eepw.com.cn/css/2013/article/headerImg/telogo.jpg" /></em><span>TE金屬混合保護(hù)專區(qū)</span></a></li> <li><a href="http://www.ex-cimer.com/event/action/adi_video/index.html " target="_blank"><em><img src="https://webstorage.eepw.com.cn/css/2013/article/headerImg/ADI.png" /></em><span>ADI視頻專區(qū)</span></a></li> <li><a href="http://www.ex-cimer.com/openvino" target="_blank"><em><img src="https://webstorage.eepw.com.cn/css/2013/article/headerImg/openvino.jpg" /></em><span>OpenVINO生態(tài)社區(qū)</span></a></li> <li><a target="_blank"><em><img src="https://webstorage.eepw.com.cn/css/2013/article/headerImg/logo_mornsun.jpg" /></em><span>金升陽電源技術(shù)專區(qū)</span></a></li> </ul> <div id="nvh3hnl" class="clear"></div> <ul class="cTxt"> <li><a href="http://www.ex-cimer.com/tech/s/k/led" target="_blank">Led技術(shù)社區(qū)</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/dsp" target="_blank">DSP技術(shù)社區(qū)</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/fpga" target="_blank">FPGA技術(shù)社區(qū)</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/mcu" target="_blank">MCU技術(shù)社區(qū)</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/usb" target="_blank">USB技術(shù)社區(qū)</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/cpld" target="_blank">CPLD技術(shù)社區(qū)</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/zigbee" target="_blank">Zigbee技術(shù)社區(qū)</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/labview" target="_blank">Labview技術(shù)社區(qū)</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/arduino" target="_blank">Arduino技術(shù)社區(qū)</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/示波器" target="_blank">示波器技術(shù)社區(qū)</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/步進(jìn)電機(jī)" target="_blank">步進(jìn)電機(jī)技術(shù)社區(qū)</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/無線充電" target="_blank">無線充電技術(shù)社區(qū)</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/人臉識別" target="_blank">人臉識別技術(shù)社區(qū)</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/指紋識別" target="_blank">指紋識別技術(shù)社區(qū)</a></li> </ul> </div> </li> <li id="hMorePro" class="hMenu">快捷導(dǎo)航<img src="https://webstorage.eepw.com.cn/css/2013/article/images/arrow1.jpg" class="hArrow" /> <div class="drhf1lz" id="hMoreProMenu"> <ul class="cTxt"> <li><a target="_blank"><span><img src="https://webstorage.eepw.com.cn/css/2013/article/headerImg/download_icon.png"></span>下載</a></li> <li><a target="_blank"><span><img src="https://webstorage.eepw.com.cn/css/2013/article/headerImg/circuit_icon.png"></span>電路</a></li> <li><a target="_blank"><span><img src="https://webstorage.eepw.com.cn/css/2013/article/headerImg/EETV_icon.png"></span>EETV</a></li> <li><a target="_blank"><span><img src="https://webstorage.eepw.com.cn/css/2013/article/headerImg/manufacturer_icon.png"></span>廠商專區(qū)</a></li> <li><a target="_blank"><span><img src="https://webstorage.eepw.com.cn/css/2013/article/headerImg/eleQuery_icon.png"></span>元件查詢</a></li> <li><a href="http://www.ex-cimer.com/event/action/tools/" target="_blank"><span><img src="https://webstorage.eepw.com.cn/css/2013/article/headerImg/cal_icon.png"></span>計(jì)算工具</a></li> </ul> </div> </li> <li><a target="_blank"><font color="#ffffff">資料庫</font></a></li> </ul> </nav> <div id="brjrtr3" class="hRegLogin" style="text-align:right;"> <script type="text/javascript" src="https://forum.eepw.com.cn/jscontent/jslogin"></script> </div> <div id="9zljl9x" class="hSearch"> <form target="_blank" action="https://search.eepw.com.cn/search/s" method="post" id="TsearchBox"> <input class="sBox" name="k" id="searchWord" value="MCU" type="text"> <input name="t" value="4" type="hidden"> <input class="topSearchBtn" value="" type="submit"> </form> </div> <div id="rzztlrz" class="clear"></div> </div> <link type="text/css" rel="stylesheet" /> <script src="https://webstorage.eepw.com.cn/css/2013/article/js/show20140923.js"></script> <div id="111fbzp" class="hTopBottom" id="hTopBottom" ></div> <div id="1ltdtzr" class="hAd">  <iframe id='a5ad1c23' name='a5ad1c23' src='https://ad.eepw.com.cn/www/delivery/afr.php?zoneid=101&cb=INSERT_RANDOM_NUMBER_HERE' frameborder='0' scrolling='no' width='1000' height='75'><a target='_blank'><img src='https://ad.eepw.com.cn/www/delivery/avw.php?zoneid=101&cb=INSERT_RANDOM_NUMBER_HERE&n=a03eaeaf' border='0' alt='' /></a></iframe> </div> <div id="r1n39dh" class="clear"></div><link rel="stylesheet" tyle="text/css" /> <script type="text/javascript"> //判斷移動(dòng)設(shè)備 function udirect(){ if(document.referrer.indexOf("m.eepw.com.cn")<0){ if ((navigator.userAgent.match(/(iPhone|iPod|ios|iPad|Android)/i))) { location.replace("http://m.eepw.com.cn/article/201612/327173.html"); } } } udirect(); </script> <script src="/pub/js/jquery-1.11.0.min.js" type="text/javascript"></script> <script src="/pub/js/thickbox-compressed.js" type="text/javascript"></script> <script type="text/javascript"> function checkText(textID){ var textInput = document.getElementById(textID); var textCheck = true; if (textInput.value.replace(/^\s+|\s+$/g,'')==''||textInput.value=='請點(diǎn)擊'){ textCheck = false; } return textCheck; } //驗(yàn)證textarea為空 function checkArea(id){ var area = document.getElementById(id); var areavalue = area.value; var check = true; while(areavalue.indexOf(" ")>=0){//去除空格 areavalue=areavalue.replace(" ",""); } if(areavalue == ""||areavalue == "我來說兩句……"){ check = false; } return check; } function checkradio(name){ var check = false; var radio = document.getElementsByName(name); for(var i = 0; i < radio.length; i++){ if(radio[i].checked){ check = true; } } return check; } function checkradio2(radioid,inputid){ var check = true; var radio = document.getElementById(radioid); if (radio.checked){ check = checkText(inputid); } return check; } function check_select(){ var check_array = true; if(!checkArea("cBox")){ alert("請?zhí)顚憙?nèi)容!"); return false; }else if(!checkText("verifycode")){ alert("請?zhí)顚戲?yàn)證碼!"); return false; }else{ return true; } } </script> <script language="javascript" type="text/javascript"> var source = document.referrer; document.write("<script src='http://www.ex-cimer.com/news/addviewcount/articleid/327173/typeid/5?source="+source+"'><\/script>"); </script> <div class="dffr9d3" id="path" style="position:relative;">  <div id="v9vxpv3" class="hLogoLocationSearch"> <div id="hjtbfn9" class="cT"> <h2>新聞中心</h2> </div> <div id="p9tzrh9" class="hLocation"> <p><a href="http://www.ex-cimer.com" target="_blank">EEPW首頁</a> > <a href="/info/industry/special/power">電源與新能源</a> > <a href="/info/articlelist/special/power/type/5">設(shè)計(jì)應(yīng)用</a> > 透徹分析：電壓雙象限Buck-Boost電路拓?fù)?/p> </div> </div> </div>   <script src="https://forum.eepw.com.cn/jscontent/wenzilian" type="text/javascript"></script>  <div class="7drxtlv" id="container"> <section> <article> <h1>透徹分析：電壓雙象限Buck-Boost電路拓?fù)?/h1> <div id="v3drrfd" class="authorTimeSource"> <span>作者：</span> <span>時(shí)間：2016-12-07</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="p3lffvt" 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(shí)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="tnxv9j7" 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="dllbzj9" class="content" id="contentDiv" style="position:relative;"> <div id="7zphjpz" 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 style="margin: 0px; padding: 0px; word-wrap: break-word; text-indent: 2em; line-height: 24px; color: rgb(62, 62, 62); text-align: justify;">在傳統(tǒng)全橋的基礎(chǔ)上長期使用單象限電路，這次來研究一款新電路，使設(shè)計(jì)的<strong>電源</strong>能更廣泛應(yīng)用在各領(lǐng)域中。下面引出雙象限的概念，并詳細(xì)介紹<strong>電壓雙象限</strong>Buck、Boost、<strong>Buck-Boost</strong>電路，對開關(guān)器件關(guān)斷和開通分析。</p>本文引用地址：<a href="http://www.ex-cimer.com/article/201612/327173.htm">http://www.ex-cimer.com/article/201612/327173.htm</a><p style="margin: 0px; padding: 0px; word-wrap: break-word; text-indent: 2em; line-height: 24px; color: rgb(62, 62, 62); text-align: center;"><br></p><p style="margin: 0px; padding: 0px; word-wrap: break-word; text-indent: 2em; line-height: 24px; color: rgb(62, 62, 62); text-align: center;"><img onload="if(this.width>620)this.width=620;" onclick="window.open(this.src)" style="cursor:pointer" src="http://editerupload.eepw.com.cn/fetch/20161101/327173_1_0.jpg" style="border: none; vertical-align: middle;"></p><p style="margin: 0px; padding: 0px; word-wrap: break-word; text-indent: 2em; line-height: 24px; color: rgb(62, 62, 62); text-align: justify;">在直流變換中不產(chǎn)生電能形式變化，只產(chǎn)生直流電參數(shù)的變化。DC/<strong>DC變換器</strong>具有成本低、重量輕、可靠性高、結(jié)構(gòu)簡單等特點(diǎn)，因此，在工業(yè)領(lǐng)域和實(shí)驗(yàn)室得到了廣泛應(yīng)用。單象限直流電壓變換器電路的特點(diǎn)是輸出電壓平均值Uo跟隨占空比D值而變，但不管D為何值，Uo的極性則始終不變，這對于直流開關(guān)穩(wěn)壓電源一類的應(yīng)用場所是能夠滿足要求的。但對于直流調(diào)速電源，負(fù)載為直流<strong>電動(dòng)機(jī)</strong>時(shí)，上述性能便不能滿足要求，因而發(fā)展了多象限直流電壓變換電路。</p><p style="margin: 0px; padding: 0px; word-wrap: break-word; text-indent: 2em; line-height: 24px; color: rgb(62, 62, 62); text-align: justify;">雙象限電路分為輸出電流平均值Io極性可變的電路與輸出電壓平均值Uo極性可變的電路兩類，通常前一種電路稱為電流雙象限電路，后一種電路稱為電壓雙象限電路。電流雙象限電路是指輸出電流平均值Io的幅值和極性均隨控制信號us而變化，但輸出電壓平均值Uo的極性卻始終為正，即電路可運(yùn)行于第一和第二象限。電壓雙象限電路是指輸出電壓平均值Uo的幅值和極性均隨控制信號us而變化，但輸出電流平均值Io卻始終為正，即電路可運(yùn)行于第一和第四象限。本文將對電壓雙象限BuckBoost電路進(jìn)行分析。<span style="text-indent: 2em;">Buck電路</span></p><p style="margin: 0px; padding: 0px; word-wrap: break-word; text-indent: 2em; line-height: 24px; color: rgb(62, 62, 62); text-align: justify;"><span style="line-height: 1.5;">(1)電路結(jié)構(gòu)</span></p><p style="margin: 0px; padding: 0px; word-wrap: break-word; text-indent: 2em; line-height: 24px; color: rgb(62, 62, 62); text-align: justify;">主電路如圖1所示。用電感、內(nèi)阻和等效電壓串聯(lián)電路表示有源負(fù)載，橋的直流輸入端并聯(lián)濾波電容。這是一個(gè)全橋電路結(jié)構(gòu)，橋的每臂用全控型器件(S1，S2)和不控型器件(D1，D2)組成。S1及S2的控制采用PWM控制，這樣可以調(diào)節(jié)D值，并且及時(shí)檢測負(fù)載的運(yùn)行狀況，由此控制開關(guān)的關(guān)斷和開通。此電路的元器件、電源、負(fù)載均假設(shè)為理想的。輸出濾波電感足夠大，可保證負(fù)載電流連續(xù)，且線性升降。</p><p style="margin: 0px; padding: 0px; word-wrap: break-word; text-indent: 2em; line-height: 24px; color: rgb(62, 62, 62); text-align: center;"><br></p><p style="margin: 0px; padding: 0px; word-wrap: break-word; text-indent: 2em; line-height: 24px; color: rgb(62, 62, 62); text-align: center;"><img onload="if(this.width>620)this.width=620;" onclick="window.open(this.src)" style="cursor:pointer" src="http://editerupload.eepw.com.cn/fetch/20161101/327173_1_1.jpg" style="border: none; vertical-align: middle;"></p><p style="margin: 0px; padding: 0px; word-wrap: break-word; text-indent: 2em; line-height: 24px; color: rgb(62, 62, 62); text-align: justify;">(2)工作原理</p><p style="margin: 0px; padding: 0px; word-wrap: break-word; text-indent: 2em; line-height: 24px; color: rgb(62, 62, 62); text-align: justify;">運(yùn)行于第一象限</p><p style="margin: 0px; padding: 0px; word-wrap: break-word; text-indent: 2em; line-height: 24px; color: rgb(62, 62, 62); text-align: justify;">這是指輸出端電壓平均值和電流平均值均為正的工作狀態(tài)。(0≤t≤DT) S1及S2均導(dǎo)通，等效電路如圖2(a)所示，輸出電壓Uo為Ud，輸入電流等于輸出電流，輸出電流線性增長，負(fù)載從電源吸取能量。(DT≤t≤T) S1導(dǎo)通，S2斷開，D1正偏續(xù)流，等效電路如圖2(b)所示，由于S1與D1導(dǎo)通，Uo的值為零。輸出電壓平均值為 Uo=Dud。</p><p style="margin: 0px; padding: 0px; word-wrap: break-word; text-indent: 2em; line-height: 24px; color: rgb(62, 62, 62); text-align: center;"><br></p><p style="margin: 0px; padding: 0px; word-wrap: break-word; text-indent: 2em; line-height: 24px; color: rgb(62, 62, 62); text-align: center;"><img onload="if(this.width>620)this.width=620;" onclick="window.open(this.src)" style="cursor:pointer" src="http://editerupload.eepw.com.cn/fetch/20161101/327173_1_2.jpg" style="border: none; vertical-align: middle;"></p><p style="margin: 0px; padding: 0px; word-wrap: break-word; text-indent: 2em; line-height: 24px; color: rgb(62, 62, 62); text-align: justify;">運(yùn)行于第四象限</p><p style="margin: 0px; padding: 0px; word-wrap: break-word; text-indent: 2em; line-height: 24px; color: rgb(62, 62, 62); text-align: justify;">這是指輸出端電壓平均值為負(fù)而電流平均值為正的工作狀態(tài)。當(dāng)電路負(fù)載為電動(dòng)機(jī)且驅(qū)動(dòng)位能性負(fù)載，如卷揚(yáng)機(jī)的提升機(jī)構(gòu)，當(dāng)放下重物時(shí)，電機(jī)在重物作用下反轉(zhuǎn)，電樞感應(yīng)電勢反向，電磁轉(zhuǎn)矩成為制動(dòng)轉(zhuǎn)矩，為了保證安全，必須改變控制信號的極性和幅值，使電路工作于第四象限，將位能經(jīng)過變換電路反饋到直流電源。具體工作過程如下。</p><p style="margin: 0px; padding: 0px; word-wrap: break-word; text-indent: 2em; line-height: 24px; color: rgb(62, 62, 62); text-align: center;"><br></p><p style="margin: 0px; padding: 0px; word-wrap: break-word; text-indent: 2em; line-height: 24px; color: rgb(62, 62, 62); text-align: center;"><img onload="if(this.width>620)this.width=620;" onclick="window.open(this.src)" style="cursor:pointer" src="http://editerupload.eepw.com.cn/fetch/20161101/327173_1_3.jpg" style="border: none; vertical-align: middle;"></p><p style="margin: 0px; padding: 0px; word-wrap: break-word; text-indent: 2em; line-height: 24px; color: rgb(62, 62, 62); text-align: justify;">(DT≤t≤T)S1及S2均斷開，電感端電壓反向，D1，D2正偏導(dǎo)通，等效電路如圖3(a)所示，輸出電壓Uo為-Ud，負(fù)載反饋能量。(0≤t≤DT)S1斷開，S2導(dǎo)通，負(fù)載電流由D2換到S2中。等效電路如圖3(b)所示，Uo的值為零。輸出電壓平均值為 Uo=-Dud。由以上分析可知此電路及其控制策略可以實(shí)現(xiàn)雙象限Buck電路功能。</p><p style="margin: 0px; padding: 0px; word-wrap: break-word; text-indent: 2em; line-height: 24px; color: rgb(62, 62, 62); text-align: center;"><br></p><p style="margin: 0px; padding: 0px; word-wrap: break-word; text-indent: 2em; line-height: 24px; color: rgb(62, 62, 62); text-align: center;"><img onload="if(this.width>620)this.width=620;" onclick="window.open(this.src)" style="cursor:pointer" src="http://editerupload.eepw.com.cn/fetch/20161101/327173_1_4.jpg" style="border: none; vertical-align: middle;"><span style="line-height: 1.5; text-align: justify; text-indent: 2em;">Boost電路</span></p><p style="margin: 0px; padding: 0px; word-wrap: break-word; text-indent: 2em; line-height: 24px; color: rgb(62, 62, 62); text-align: justify;">(1)電路結(jié)構(gòu)</p><p style="margin: 0px; padding: 0px; word-wrap: break-word; text-indent: 2em; line-height: 24px; color: rgb(62, 62, 62); text-align: justify;">主電路如圖4所示。圖中S1，S2，S3為全控型器件，D1及D2為不控型器件。負(fù)載依然為有源負(fù)載，直流輸入端串聯(lián)電感。S1，S2，S3的控制采用 PWM控制，此電路的元器件、電源、負(fù)載同樣假設(shè)為理想的。輸出濾波電感足夠大，可保證負(fù)載電流連續(xù)，且線性升降?？梢钥闯?，本電路的設(shè)計(jì)思想也是利用全橋?qū)崿F(xiàn)雙象限運(yùn)行，其好處在于簡單、可靠。</p><p style="margin: 0px; padding: 0px; word-wrap: break-word; text-indent: 2em; line-height: 24px; color: rgb(62, 62, 62); text-align: center;"><br></p><p style="margin: 0px; padding: 0px; word-wrap: break-word; text-indent: 2em; line-height: 24px; color: rgb(62, 62, 62); text-align: center;"><img onload="if(this.width>620)this.width=620;" onclick="window.open(this.src)" style="cursor:pointer" src="http://editerupload.eepw.com.cn/fetch/20161101/327173_1_5.jpg" style="border: none; vertical-align: middle;"></p><p style="margin: 0px; padding: 0px; word-wrap: break-word; text-indent: 2em; line-height: 24px; color: rgb(62, 62, 62); text-align: justify;">(2)工作原理</p><p style="margin: 0px; padding: 0px; word-wrap: break-word; text-indent: 2em; line-height: 24px; color: rgb(62, 62, 62); text-align: justify;">運(yùn)行于第一象限</p><p style="margin: 0px; padding: 0px; word-wrap: break-word; text-indent: 2em; line-height: 24px; color: rgb(62, 62, 62); text-align: justify;">(DT≤t≤T)S1斷開，S2及S3均導(dǎo)通，等效電路如圖5(a)所示，電感電壓UL=Ud-Uo。0≤t≤DT)S1，S2，S3均導(dǎo)通，等效電路如圖5(b)所示，電感電壓UL=Ud。輸出電壓平均值為Uo=Ud/(1-D)。</p><p style="margin: 0px; padding: 0px; word-wrap: break-word; text-indent: 2em; line-height: 24px; color: rgb(62, 62, 62); text-align: center;"><br></p><p style="margin: 0px; padding: 0px; word-wrap: break-word; text-indent: 2em; line-height: 24px; color: rgb(62, 62, 62); text-align: center;"><img onload="if(this.width>620)this.width=620;" onclick="window.open(this.src)" style="cursor:pointer" src="http://editerupload.eepw.com.cn/fetch/20161101/327173_1_6.jpg" style="border: none; vertical-align: middle;"></p><p style="margin: 0px; padding: 0px; word-wrap: break-word; text-indent: 2em; line-height: 24px; color: rgb(62, 62, 62); text-align: justify;">運(yùn)行于第四象限</p><p style="margin: 0px; padding: 0px; word-wrap: break-word; text-indent: 2em; line-height: 24px; color: rgb(62, 62, 62); text-align: justify;">(DT≤t≤T) S1，S2，S3均斷開，電感端電壓反向，D1及D2正偏導(dǎo)通，等效電路如圖6(a)所示，電感電壓UL=Ud+Uo。(0≤t≤DT) S1導(dǎo)通，S2及S3均斷開，等效電路如圖6(b)所示，電感電壓UL=Ud。輸出電壓平均值為 Uo=-Ud/(1-D)。<span style="line-height: 1.5; text-indent: 2em;">Buck-Boost電路</span></p><p style="margin: 0px; padding: 0px; word-wrap: break-word; text-indent: 2em; line-height: 24px; color: rgb(62, 62, 62); text-align: justify;">(1)電路結(jié)構(gòu)</p><p style="margin: 0px; padding: 0px; word-wrap: break-word; text-indent: 2em; line-height: 24px; color: rgb(62, 62, 62); text-align: justify;">主電路如圖7所示。圖中S0，S1，S2，S3，S4為全控型器件。負(fù)載依然為有源負(fù)載，直流輸入端并聯(lián)電感Lo。所有開關(guān)均采用PWM控制，此電路的元器件、電源、負(fù)載同樣假設(shè)為理想的。輸出濾波電感足夠大，可保證負(fù)載電流連續(xù)，且線性升降。此電路與雙象限Boost電路不同之處是主開關(guān)與電感相互交換位置。也是利用單象限BuckBoost電路的主電路衍生出來的，并利用全橋全控電路實(shí)現(xiàn)雙象限功能。改變占空比D可以實(shí)現(xiàn)升壓或降壓功能。</p><p style="margin: 0px; padding: 0px; word-wrap: break-word; text-indent: 2em; line-height: 24px; color: rgb(62, 62, 62); text-align: center;"><br></p><p style="margin: 0px; padding: 0px; word-wrap: break-word; text-indent: 2em; line-height: 24px; color: rgb(62, 62, 62); text-align: center;"><img onload="if(this.width>620)this.width=620;" onclick="window.open(this.src)" style="cursor:pointer" src="http://editerupload.eepw.com.cn/fetch/20161101/327173_1_7.jpg" style="border: none; vertical-align: middle;"></p><p style="margin: 0px; padding: 0px; word-wrap: break-word; text-indent: 2em; line-height: 24px; color: rgb(62, 62, 62); text-align: justify;">(2)工作原理</p><p style="margin: 0px; padding: 0px; word-wrap: break-word; text-indent: 2em; line-height: 24px; color: rgb(62, 62, 62); text-align: justify;">運(yùn)行于第一象限</p><p style="margin: 0px; padding: 0px; word-wrap: break-word; text-indent: 2em; line-height: 24px; color: rgb(62, 62, 62); text-align: justify;">(0≤t≤DT) S0，S1，S2均導(dǎo)通，S3及S4斷開，等效電路如圖8(a)所示，電感電壓UL=Ud。(DT≤t≤T) S0，S1及S3斷開，S2及S4導(dǎo)通，等效電路如圖8(b)所示，電感電壓UL=-Uo。</p><p style="margin: 0px; padding: 0px; word-wrap: break-word; text-indent: 2em; line-height: 24px; color: rgb(62, 62, 62); text-align: justify;">運(yùn)行于第四象限</p><p style="margin: 0px; padding: 0px; word-wrap: break-word; text-indent: 2em; line-height: 24px; color: rgb(62, 62, 62); text-align: justify;">(DT≤t≤T) S0，S2，S4斷開，S1及S3導(dǎo)通，電感端電壓反向，等效電路如圖9(a)所示，電感電壓UL=Uo。(0≤t≤DT)S0，S3，S4導(dǎo)通，S1及S2斷開，等效電路如圖9(b)所示，電感電壓UL=Ud。輸出電壓平均值為Uo=-DUd/(1-D)。</p><p style="margin: 0px; padding: 0px; word-wrap: break-word; text-indent: 2em; line-height: 24px; color: rgb(62, 62, 62); text-align: center;"><br></p><p style="margin: 0px; padding: 0px; word-wrap: break-word; text-indent: 2em; line-height: 24px; color: rgb(62, 62, 62); text-align: center;"><img onload="if(this.width>620)this.width=620;" onclick="window.open(this.src)" style="cursor:pointer" src="http://editerupload.eepw.com.cn/fetch/20161101/327173_1_8.jpg" style="border: none; vertical-align: middle;"></p><p style="margin: 0px; padding: 0px; word-wrap: break-word; text-indent: 2em; line-height: 24px; color: rgb(62, 62, 62); text-align: justify;">4、總結(jié)</p><p style="margin: 0px; padding: 0px; word-wrap: break-word; text-indent: 2em; line-height: 24px; color: rgb(62, 62, 62); text-align: justify;">本文在傳統(tǒng)單象限Buck、Boost、Buck-Boost電路的基礎(chǔ)上不斷摸索與研發(fā)，最終衍生了雙象限的Buck、Boost、Buck-Boost電路，基于雙象限特性分析了每一步的工作過程，具體現(xiàn)象有著直接話語權(quán)，為雙象限電路及直流變換電路的進(jìn)一步完善提供了新思路。</p> </span>  <div class="sfglqsf" id="coverDiv" class="article_reg" style="width:100%;overflow:hidden;display:none;z-index:10;position:absolute;left:0;background:#fff;"> <center> <img src="https://webstorage.eepw.com.cn/images/display/reg.jpg" border="0" usemap="#Map" /> <map name="Map" id="Map"> <area shape="rect" coords="133,235,319,253" target="_blank" /> <area shape="rect" coords="132,315,319,335" /> </map> </center> </div>  <span id="jtvmrmh" class="hAd8"> <br></span>   </div> </article> <div id="pupvbwf" class="clear"></div> <br/> <div id="jgxzicm" class="hAd6"> <div class="ogisivj" id="relA" style="width:auto;height:auto;"> <ul> <li>  <iframe id='af71d594' name='af71d594' src='https://ad.eepw.com.cn/www/delivery/afr.php?zoneid=114&cb=INSERT_RANDOM_NUMBER_HERE' frameborder='0' scrolling='no' width='650' height='30'><a target='_blank'><img src='https://ad.eepw.com.cn/www/delivery/avw.php?zoneid=114&cb=INSERT_RANDOM_NUMBER_HERE&n=a7a83b30' border='0' alt='' /></a></iframe> </li> <li>  <iframe id='a7889591' name='a7889591' src='https://ad.eepw.com.cn/www/delivery/afr.php?zoneid=115&cb=INSERT_RANDOM_NUMBER_HERE' frameborder='0' scrolling='no' width='650' height='30'><a target='_blank'><img src='https://ad.eepw.com.cn/www/delivery/avw.php?zoneid=115&cb=INSERT_RANDOM_NUMBER_HERE&n=a3d98779' border='0' alt='' /></a></iframe> </li> <li>  <iframe id='a2c13fc7' name='a2c13fc7' src='https://ad.eepw.com.cn/www/delivery/afr.php?zoneid=116&cb=INSERT_RANDOM_NUMBER_HERE' frameborder='0' scrolling='no' width='650' height='30'><a target='_blank'><img src='https://ad.eepw.com.cn/www/delivery/avw.php?zoneid=116&cb=INSERT_RANDOM_NUMBER_HERE&n=abca108c' border='0' alt='' /></a></iframe> </li> <li>  <iframe id='a974b23a' name='a974b23a' src='https://ad.eepw.com.cn/www/delivery/afr.php?zoneid=117&cb=INSERT_RANDOM_NUMBER_HERE' frameborder='0' scrolling='no' width='650' height='30'><a target='_blank'><img src='https://ad.eepw.com.cn/www/delivery/avw.php?zoneid=117&cb=INSERT_RANDOM_NUMBER_HERE&n=a1775170' border='0' alt='' /></a></iframe> </li> <li>  <iframe id='a13cbc86' name='a13cbc86' src='https://ad.eepw.com.cn/www/delivery/afr.php?zoneid=118&cb=INSERT_RANDOM_NUMBER_HERE' frameborder='0' scrolling='no' width='650' height='30'><a target='_blank'><img src='https://ad.eepw.com.cn/www/delivery/avw.php?zoneid=118&cb=INSERT_RANDOM_NUMBER_HERE&n=a449048b' border='0' alt='' /></a></iframe> </li> </ul> <div id="itbrpdc" class="clear"></div> </div> </div> <div id="mizqoye" class="hAd7">  <iframe id='a95aafe3' name='a95aafe3' src='https://ad.eepw.com.cn/www/delivery/afr.php?zoneid=119&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=119&cb=INSERT_RANDOM_NUMBER_HERE&n=ae6854a5' border='0' alt='' /></a></iframe> </div>  <div id="dsjwfay" class="keyWordShare"> <div id="gveoerm" class="keyWord"><span>關(guān)鍵詞： <em><a target="_blank" href="/news/listbylabel/label/%E7%94%B5%E5%8E%8B%E5%8F%8C%E8%B1%A1%E9%99%90Buck-Boost%E7%94%B5%E8%B7%AF%E6%8B%93">電壓雙象限Buck-Boost電路拓</a></em> </span> </div>  <div id="jmktuak" class="clear"></div> </div>  <script src="https://forum.eepw.com.cn/jscontent/goonread/article/327173" type="text/javascript"></script> <div id="aecizbh" class="clear"></div>  <div id="fcpcwgi" class="comment"> <div id="qxgtcdr" class="title"> <h3>評論</h3> </div> <div > <form name="form1" id="form1" method="post" action="https://passport.eepw.com.cn/deal/post" onSubmit="if (!check_select()) return false;"> <textarea name="content" id="cBox" cols="55" rows="5" onfocus="if(value=='我來說兩句……'){value=''}" onblur="if (value ==''){value='我來說兩句……'}">我來說兩句……</textarea> <div id="uydxzfp" class="sub"> <input type="submit" value="發(fā)表" class="subBtn"> <div id="xxrtgbh" class="vali"> <label><span>驗(yàn)證碼：</span> <input name="verifycode" value="請點(diǎn)擊" id="verifycode" onfocus="reloadVerifyCode();" type="text" /></label> <span style="display:block;float:left;"><script language='JavaScript' type='text/javascript' src='/pub/js/dealverifycode.js'></script></span> </div> </div> <input type="hidden" name="articleid" value="327173"> <input type="hidden" name="ipaddress" value="123.125.19.4"> <input type="hidden" name="fromarticle" id="fromarticle" value="327173"/> </form> </div> <div id="htvxoji" class="clear"></div> <div id="eajpvua" class="content">  <script src="https://forum.eepw.com.cn/jscontent/articlecomments/t/1/count/15/id/327173" type="text/javascript"></script>  </div> </div> <div id="absobsu" class="clear"></div> <br>  <div id="itvbhqp" class="relArtical"> <div id="kdmrsbh" class="title"> <h3>相關(guān)推薦</h3> </div> <ul> <ul class="xgwz"> <li id="czqwytw" class="dg1"> <div id="ppvhqtr" class="yb-1"> <div id="wpnlrbl" class="younr-1"> <a href="http://www.ex-cimer.com/article/201612/327173.htm" target="_blank">透徹分析：電壓雙象限Buck-Boost電路拓?fù)?/a> <div style="clear: both"></div> </div> <div id="zzeneon" class="yx"> <a class="fl" href="http://www.ex-cimer.com/info/industry/special/power" target="_blank"> 電源與新能源 </a> <a class="zz" target="_blank" href="http://www.ex-cimer.com/news/listbylabel/label/電壓雙象限Buck-Boost電路拓">電壓雙象限Buck-Boost電路拓</a> <span id="hhuoqlc" class="zz">| 2016-12-07</span> <div style="clear: both"></div> </div> </div> <div style="clear: both"></div> </li> </ul> </ul>  <ul class="preNext"> <li><a href="http://www.ex-cimer.com/article/201612/327172.htm" target="_blank" title="反激電源及變壓器的最大占空比實(shí)現(xiàn)">上一篇：反激電源及變壓器的最大占空比實(shí)現(xiàn)</a></li> <li><a href="http://www.ex-cimer.com/article/201612/327171.htm" target="_blank" title="車載數(shù)碼相機(jī)充電適配器">下一篇：車載數(shù)碼相機(jī)充電適配器</a></li> </ul> </div> </section> <aside>  <div id="xbzbhvy" class="AD300x200_Afinal15_back">  <iframe id='abbb0a3d' name='abbb0a3d' src='https://ad.eepw.com.cn/www/delivery/afr.php?zoneid=86&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=86&cb=INSERT_RANDOM_NUMBER_HERE&n=a674caa6' border='0' alt='' /></a></iframe> </div>   <script src="https://forum.eepw.com.cn/jscontent/seminar" type="text/javascript"></script>   <div id="ltnlyak" class="editorRec"> <div id="uqhjhre" class="title"> <h3>焦點(diǎn)</h3> <span><a href="http://www.ex-cimer.com/news" target="_blank">更多>></a></span> </div> <div id="apcemsf" class="content"> <ul id="editorRec">  <iframe id='a49ccc9d' name='a49ccc9d' src='https://ad.eepw.com.cn/www/delivery/afr.php?zoneid=112&cb=INSERT_RANDOM_NUMBER_HERE' frameborder='0' scrolling='no' width='300' height='90'><a target='_blank'><img src='https://ad.eepw.com.cn/www/delivery/avw.php?zoneid=112&cb=INSERT_RANDOM_NUMBER_HERE&n=a65cd760' border='0' alt='' /></a></iframe>  <iframe id='ab580406' name='ab580406' src='https://ad.eepw.com.cn/www/delivery/afr.php?zoneid=113&cb=INSERT_RANDOM_NUMBER_HERE' frameborder='0' scrolling='no' width='300' height='90'><a target='_blank'><img src='https://ad.eepw.com.cn/www/delivery/avw.php?zoneid=113&cb=INSERT_RANDOM_NUMBER_HERE&n=a38c0199' border='0' alt='' /></a></iframe> <script src="https://forum.eepw.com.cn/jscontent/iscommend" type="text/javascript"></script> </ul> </div> </div>  <div id="rrwjprq" class="AD300x200_Afinal34_back">  <iframe id='a3bbb656' name='a3bbb656' src='https://ad.eepw.com.cn/www/delivery/afr.php?zoneid=85&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=85&cb=INSERT_RANDOM_NUMBER_HERE&n=a50e4511' border='0' alt='' /></a></iframe> </div> <div id="xbsjprf" class="newVideo"> <div id="kkbsflv" class="title"> <h3>推薦視頻</h3> <span><a target="_blank">更多>></a></span> </div> <div id="linpymh" class="content"> <ul id="video"> <script src="https://forum.eepw.com.cn/jscontent/newvideo" type="text/javascript"></script> </ul> </div> </div>   <script src="https://webstorage.eepw.com.cn/css/2013/article/js/ad.js"></script> <div id="qfktvxz" class="AD300x200_afinal25_back" id="newsnavmenu2" >  <iframe id='ad1368e1' name='ad1368e1' src='https://ad.eepw.com.cn/www/delivery/afr.php?zoneid=84&cb=INSERT_RANDOM_NUMBER_HERE' frameborder='0' scrolling='no' width='302' height='300'><a target='_blank'><img src='https://ad.eepw.com.cn/www/delivery/avw.php?zoneid=84&cb=INSERT_RANDOM_NUMBER_HERE&n=aaeb3436' border='0' alt='' /></a></iframe> </div> </aside> <div id="yrxgent" class="clear"></div> <div id="wekxrfa" class="hAd3">  <iframe id='ab546219' name='ab546219' src='https://ad.eepw.com.cn/www/delivery/afr.php?zoneid=98&cb=INSERT_RANDOM_NUMBER_HERE' frameborder='0' scrolling='no' width='1000' height='75'><a target='_blank'><img src='https://ad.eepw.com.cn/www/delivery/avw.php?zoneid=98&cb=INSERT_RANDOM_NUMBER_HERE&n=a059f6fc' border='0' alt='' /></a></iframe> </div>  <style> .title_tech{margin-top:30px;clear:both;} .title_tech h2{float:left;font-size:20px;color:#000;font-weight:bold;text-shadow:1px 1px 1px #CCC;} .technology{margin:0 auto;margin-top:70px;height:170px;/*overflow:hidden;*/} .technology ul {padding:6px 10px; border-top:solid 1px #D9D9D9;} .technology ul li{float:left;width:140px;line-height:25px;text-align:left;} </style> <div id="jnsfhrb" class="title_tech"> <h2>技術(shù)專區(qū)</h2> </div> <div id="iqoprql" class="technology"> <ul> <li><a href="http://www.ex-cimer.com/tech/s/k/FPGA" title="FPGA" target="_blank">FPGA</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/DSP" title="DSP" target="_blank">DSP</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/MCU" title="MCU" target="_blank">MCU</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/示波器" title="示波器" target="_blank">示波器</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/步進(jìn)電機(jī)" title="步進(jìn)電機(jī)" target="_blank">步進(jìn)電機(jī)</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/Zigbee" title="Zigbee" target="_blank">Zigbee</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/LabVIEW" title="LabVIEW" target="_blank">LabVIEW</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/Arduino" title="Arduino" target="_blank">Arduino</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/RFID" title="RFID" target="_blank">RFID</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/NFC" title="NFC" target="_blank">NFC</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/STM32" title="STM32" target="_blank">STM32</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/Protel" title="Protel" target="_blank">Protel</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/GPS" title="GPS" target="_blank">GPS</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/MSP430" title="MSP430" target="_blank">MSP430</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/Multisim" title="Multisim" target="_blank">Multisim</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/濾波器" title="濾波器" target="_blank">濾波器</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/CAN總線" title="CAN總線" target="_blank">CAN總線</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/開關(guān)電源" title="開關(guān)電源" target="_blank">開關(guān)電源</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/單片機(jī)" title="單片機(jī)" target="_blank">單片機(jī)</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/PCB" title="PCB" target="_blank">PCB</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/USB" title="USB" target="_blank">USB</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/ARM" title="ARM" target="_blank">ARM</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/CPLD" title="CPLD" target="_blank">CPLD</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/連接器" title="連接器" target="_blank">連接器</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/MEMS" title="MEMS" target="_blank">MEMS</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/CMOS" title="CMOS" target="_blank">CMOS</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/MIPS" title="MIPS" target="_blank">MIPS</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/EMC" title="EMC" target="_blank">EMC</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/EDA" title="EDA" target="_blank">EDA</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/ROM" title="ROM" target="_blank">ROM</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/陀螺儀" title="陀螺儀" target="_blank">陀螺儀</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/VHDL" title="VHDL" target="_blank">VHDL</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/比較器" title="比較器" target="_blank">比較器</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/Verilog" title="Verilog" target="_blank">Verilog</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/穩(wěn)壓電源" title="穩(wěn)壓電源" target="_blank">穩(wěn)壓電源</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/RAM" title="RAM" target="_blank">RAM</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/AVR" title="AVR" target="_blank">AVR</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/傳感器" title="傳感器" target="_blank">傳感器</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/可控硅" title="可控硅" target="_blank">可控硅</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/IGBT" title="IGBT" target="_blank">IGBT</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/嵌入式開發(fā)" title="嵌入式開發(fā)" target="_blank">嵌入式開發(fā)</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/逆變器" title="逆變器" target="_blank">逆變器</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/Quartus" title="Quartus" target="_blank">Quartus</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/RS-232" title="RS-232" target="_blank">RS-232</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/Cyclone" title="Cyclone" target="_blank">Cyclone</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/電位器" title="電位器" target="_blank">電位器</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/電機(jī)控制" title="電機(jī)控制" target="_blank">電機(jī)控制</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/藍(lán)牙" title="藍(lán)牙" target="_blank">藍(lán)牙</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/PLC" title="PLC" target="_blank">PLC</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/PWM" title="PWM" target="_blank">PWM</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/汽車電子" title="汽車電子" target="_blank">汽車電子</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/轉(zhuǎn)換器" title="轉(zhuǎn)換器" target="_blank">轉(zhuǎn)換器</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/電源管理" title="電源管理" target="_blank">電源管理</a></li> <li><a href="http://www.ex-cimer.com/tech/s/k/信號放大器" title="信號放大器" target="_blank">信號放大器</a></li> </ul> </div>  </div>  <script> //先得到cookie function getCookie(cookie_name) { var allcookies = document.cookie; var cookie_pos = allcookies.indexOf(cookie_name); // 如果找到了索引，就代表cookie存在，反之，就說明不存在。 if (cookie_pos != -1) { // 把cookie_pos放在值的開始，只要給值加1即可。 cookie_pos += cookie_name.length + 1; var cookie_end = allcookies.indexOf(";", cookie_pos); if (cookie_end == -1) { cookie_end = allcookies.length; } var value = unescape(allcookies.substring(cookie_pos, cookie_end)); } return value; } </script> <script src="https://webstorage.eepw.com.cn/js/2012/zhedang.js" type="text/javascript"></script>  <div class="aaudxdg" id="imgdiv" style="display:none;position:absolute;border:#ccc 1px solid;width:150px;height:80px;line-height:140%;text-align:left;padding-left:5px;background:#fff;overflow:hidden;"></div> <script language="javascript" type="text/javascript"> $(document).ready(function(){ $('em').each(function(){ $(this).mouseover(function(){ var ofset = $(this).offset(); var spanL = ofset.left+$(this).width()+2; var spanT = ofset.top; var bodyHeight = $(document).height(); var divHeight = $("#imgdiv").height(); $.ajax({ type:"get", url:"http://www.ex-cimer.com/news/findadsbyworld/", data:"word="+encodeURI($(this).text()), dataType:"html", beforeSend: function(XMLHttpRequest) { $("#imgdiv").html('<img src="https://webstorage.eepw.com.cn/images/display/load.gif" style="margin-top:20px;"/>'); $("#imgdiv").css("display","none"); if((spanT+divHeight) > bodyHeight){ var newHeight = (spanT-divHeight)+20; $("#imgdiv").css("top",newHeight+"px"); }else{ $("#imgdiv").css("top",spanT+"px"); } $("#imgdiv").css("left",spanL+"px"); $("#imgdiv").css("zIndex","9999"); this; }, success:function(html){ if(html!="0") { $("#imgdiv").html(html); $("#imgdiv").css("display","block"); if((spanT+divHeight) > bodyHeight){ var newHeight = (spanT-divHeight)+20; $("#imgdiv").css("top",newHeight+"px"); }else{ $("#imgdiv").css("top",spanT+"px"); } $("#imgdiv").css("left",spanL+"px"); this; } else { $("#imgdiv").css("display","none"); } } }); }) }); $("#imgdiv").dblclick(function(){ $("#imgdiv").css("display","none"); $("#imgdiv").empty(); }); }); </script>  <script> function closed(){ var aaa=document.getElementById("ad20161025"); aaa.style.display="none" } </script> <div class="ohfhfwg" id="ad20161025"> <div style="text-align:right; font:12px/18px Arial, Helvetica, sans-serif, '宋體'; width:50px; background:#000; text-align:center; float:right;"> <a onclick="closed();" style="cursor:pointer;color:#fff;">關(guān)閉</a> </div>  <iframe id='a95dd4c0' name='a95dd4c0' src='https://ad.eepw.com.cn/www/delivery/afr.php?zoneid=120&cb=INSERT_RANDOM_NUMBER_HERE' frameborder='0' scrolling='no' width='120' height='480'><a target='_blank'><img src='https://ad.eepw.com.cn/www/delivery/avw.php?zoneid=120&cb=INSERT_RANDOM_NUMBER_HERE&n=a3b5323a' border='0' alt='' /></a></iframe> </div>  <script src="https://webstorage.eepw.com.cn/js/2012/finalad.js" type="text/javascript"></script> <link type="text/css" rel="stylesheet" /> <script src="https://webstorage.eepw.com.cn/css/2014/login/js/jquery.simplemodal.js"></script> <script src="https://webstorage.eepw.com.cn/css/2014/login/js/osx.js"></script> <footer> <div id="gdqwfln" class="inner"> <dl class="techCh"> <dt>技術(shù)頻道</dt> <dd><a href="http://www.ex-cimer.com/info/industry/special/embedded" target="_blank">嵌入式</a></dd> <dd><a href="http://www.ex-cimer.com/info/industry/special/component" target="_blank">元件/連接器</a></dd> <dd><a href="http://www.ex-cimer.com/info/industry/special/power" target="_blank">電源管理</a></dd> <dd><a href="http://www.ex-cimer.com/info/industry/special/safety" target="_blank">安防電子</a></dd> <dd><a href="http://www.ex-cimer.com/info/industry/special/auto" target="_blank">汽車電子</a></dd> <dd><a href="http://www.ex-cimer.com/info/industry/special/eda" target="_blank">EDA與制造</a></dd> <dd><a href="http://www.ex-cimer.com/info/industry/special/consume" target="_blank">消費(fèi)電子</a></dd> <dd><a href="http://www.ex-cimer.com/info/industry/special/control" target="_blank">工業(yè)電子</a></dd> <dd><a href="http://www.ex-cimer.com/info/industry/special/analog" target="_blank">模擬IC</a></dd> <dd><a href="http://www.ex-cimer.com/info/industry/special/medical" target="_blank">醫(yī)療電子</a></dd> <dd><a href="http://www.ex-cimer.com/info/industry/special/tm" target="_blank">測試測量</a></dd> <dd><a href="http://www.ex-cimer.com/info/industry/special/wireless" target="_blank">通信技術(shù)</a></dd> <dd><a href="http://www.ex-cimer.com/info/industry/special/led" target="_blank">光電顯示</a></dd> <dd><a href="http://www.ex-cimer.com/info/industry/special/smart" target="_blank">智能計(jì)算</a></dd> <dd><a href="http://www.ex-cimer.com/info/industry/special/network" target="_blank">網(wǎng)絡(luò)與存儲</a></dd> <dd><a href="http://www.ex-cimer.com/info/industry/special/iot" target="_blank">物聯(lián)網(wǎng)</a></dd> </dl> <dl> <dt>技術(shù)子站</dt> <dd><a target="_blank">PI技術(shù)專區(qū) </a></dd> <dd><a href="http://www.ex-cimer.com/event/action/adi_video/index.html " target="_blank">ADI視頻專區(qū) </a></dd> <dd><a target="_blank">ZYNQ技術(shù)社區(qū)</a></dd> <dd><a target="_blank">ADI技術(shù)專區(qū)</a></dd> <dd><a target="_blank">維博專區(qū)</a></dd> <dd><a target="_blank">貝能技術(shù)社區(qū)</a></dd> <dd><a target="_blank">Microchip資源技術(shù)社區(qū)</a></dd> <dd><a target="_blank">Fluke技術(shù)社區(qū)</a></dd> <dd><a href="http://www.ex-cimer.com/event/action/Microchip/index.html" target="_blank">Microchip視頻技術(shù)社區(qū)</a></dd> <dd><a target="_blank">賽靈思社區(qū)</a></dd> <dd><a target="_blank">IR iMotion 數(shù)字電機(jī)技術(shù)社區(qū)</a></dd> <dd><a target="_blank">英特爾Quark開發(fā)者俱樂部</a></dd> <dd><a target="_blank">MultiSIM BLUE</a></dd> <dd><a target="_blank">Andes專區(qū)</a></dd> <dd><a target="_blank">蔡司光學(xué)專欄</a></dd> </dl> <div id="btnwbln" class="QRcode"> <h3 class="mediatitle_20240428">全媒體矩陣</h3> <ul> <li> <img src="http://www.ex-cimer.com/event/action/images/code_gzh.jpg" width="100" style="margin-bottom:3px;"><br> <span>EEPW微信公眾號</span><br> <img src="http://www.ex-cimer.com/event/action/images/code_video.jpg" width="100" style="margin-bottom:3px;"><br> <span>EEPW視頻號</span> </li> <li> <img src="http://www.ex-cimer.com/event/action/images/code_bilibili.jpg" width="100" style="margin-bottom:3px;"><br> <span>EEPW Bilibili號</span><br> <img src="http://www.ex-cimer.com/event/action/images/code_tth.jpg" width="100" style="margin-bottom:3px;"><br> <span>EEPW頭條號</span> </li> <li> <img src="http://www.ex-cimer.com/event/action/images/douyin_code.jpg" width="100" style="margin-bottom:3px;"><br> <span>EEPW抖音號</span><br> <img src="http://www.ex-cimer.com/event/action/images/douyin_code2.jpg" width="100" style="margin-bottom:3px;"><br> <span>EEPW編輯部日常</span> </li> </ul>  </div> <div id="jgmoued" class="clear"></div> </div> <div id="atgizql" class="copyright"> <div id="koqvmlf" class="copyrightInner"> <span id="qfhylrl" class="fontArial">Copyright ? 電子產(chǎn)品世界</span> <a href="http://www.ex-cimer.com/event/company/about.html" rel="nofollow" target="_blank">關(guān)于我們</a> <a href="http://www.ex-cimer.com/event/company/contact.html" rel="nofollow" target="_blank">聯(lián)系我們</a> <a href="http://www.ex-cimer.com/event/company/ad.html" rel="nofollow" target="_blank">廣告服務(wù)</a> <a rel="nofollow" target="_blank">人才招聘</a> <a href="http://www.ex-cimer.com/event/action/mapNav/map.html" target="_blank">網(wǎng)站地圖</a> </div> </div> </footer>  <script> (function(){ var bp = document.createElement('script'); var curProtocol = window.location.protocol.split(':')[0]; if (curProtocol === 'https'){ bp.src = 'https://zz.bdstatic.com/linksubmit/push.js'; } else{ bp.src = 'http://push.zhanzhang.baidu.com/push.js'; } var s = document.getElementsByTagName("script")[0]; s.parentNode.insertBefore(bp, s); })(); </script>  <div style="display:none;"> <script type="text/javascript" src="https://s6.#/z.js?id=3241344"></script> <script type="text/javascript"> var _bdhmProtocol = (("https:" == document.location.protocol) ? " https://" : " http://"); document.write(unescape("%3Cscript src='" + _bdhmProtocol + "#/h.js%3Fc5e9057ff0d62338aaf443148e00157f' type='text/javascript'%3E%3C/script%3E")); </script> </div> <script src="http://www.ex-cimer.com/event/ad/right_box.js"></script> <a href="http://www.ex-cimer.com/">看屁屁www成人影院,亚洲人妻成人图片,亚洲精品成人午夜在线,日韩在线欧美成人</a> (function(){ var bp = document.createElement('script'); var curProtocol = window.location.protocol.split(':')[0]; if (curProtocol === 'https') { bp.src = 'https://zz.bdstatic.com/linksubmit/push.js'; } else { bp.src = 'http://push.zhanzhang.baidu.com/push.js'; } var s = document.getElementsByTagName("script")[0]; s.parentNode.insertBefore(bp, s); })(); </body> </html>