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src="https://forum.eepw.com.cn/jscontent/wenzilian" type="text/javascript"></script>  <div class="itdjezn" id="container"> <section> <article> <h1>電源管理芯片廠商誰主沉浮？</h1> <div id="bevuakq" class="authorTimeSource"> <span>作者：</span> <span>時(shí)間：2016-02-06</span> <span>來源：華強(qiáng)電子網(wǎng)</span> <link rel="stylesheet" type="text/css"/> <span style="float:right; width:130px;margin-right:0px; text-align:right;"> <div id="vrxsyes" class="nav0"> <ul> <li><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" />加入技術(shù)交流群</a> <ul> <li style="text-align:center;"><img src="http://www.ex-cimer.com/event/company/images/code_1.jpg" width="130"><br />掃碼加入<br />和技術(shù)大咖面對(duì)面交流<br />海量資料庫(kù)查詢</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="qxdjpon" 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="xpvblzu" class="content" id="contentDiv" style="position:relative;"> <div id="dgflgbe" class="editorNote"> <strong>編者按</strong>：當(dāng)今世界，人們的生活已是片刻也離不開電子設(shè)備，電源管理芯片對(duì)電子系統(tǒng)而言是不可或缺的，其性能的優(yōu)劣對(duì)整機(jī)的性能有著直接的影響。</div> <br/> <div id="yyekqth" 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>　　電源管理芯片，是在電子設(shè)備系統(tǒng)中擔(dān)負(fù)起對(duì)電能的變換、分配、檢測(cè)及其他電能管理的職責(zé)的芯片。主要負(fù)責(zé)識(shí)別CPU供電幅值，產(chǎn)生相應(yīng)的短矩波，推動(dòng)后級(jí)電路進(jìn)行功率輸出。接下來列舉一些國(guó)內(nèi)外知名的電源管理芯片廠商，通過以下對(duì)比可以看出這些廠商芯片的特點(diǎn)和優(yōu)勢(shì)所在。隨著物聯(lián)網(wǎng)、可穿戴設(shè)備等熱潮的來臨，電源管理芯片廠商誰主沉浮?</p>本文引用地址：<a href="http://www.ex-cimer.com/article/201602/286809.htm">http://www.ex-cimer.com/article/201602/286809.htm</a><p>　　美國(guó)<a class="contentlabel" href="http://www.ex-cimer.com/news/listbylabel/label/微芯"><em>微芯</em></a></p><p>　　與TI、ZilkerLabs等公司類似，Microchip也是數(shù)字電源的鼓吹者和先行者。Microchip電源管理系列產(chǎn)品包括線性穩(wěn)壓器、開關(guān)穩(wěn)壓器、PWM控制器、電荷泵、電壓基準(zhǔn)、CPU/系統(tǒng)監(jiān)視器、電壓檢測(cè)器、DC-DC轉(zhuǎn)換器、功率MOSFET、驅(qū)動(dòng)器等。</p><p><br /></p><center><img alt="電源管理芯片廠商誰主沉??？" width="390" height="237" src="http://editerupload.eepw.com.cn/201602/9731454717445.jpg" /></center><p><br /></p><p>　　美國(guó)<a class="contentlabel" href="http://www.ex-cimer.com/news/listbylabel/label/微芯"><em>微芯</em></a>科技公司推出的全球第一款數(shù)字增強(qiáng)型電源模擬控制器MCP19111，它擴(kuò)展了Microchip多元化的智能DC/DC電源轉(zhuǎn)換解決方案。MCP19111數(shù)字增強(qiáng)型電源模擬系列可在4.5V至32V的寬電壓范圍內(nèi)工作，與傳統(tǒng)基于模擬技術(shù)的解決方案相比，靈活性顯著提升。事實(shí)上，MCP19111是世界上第一款合成的混合信號(hào)電源管理控制器，將基于模擬的PWM控制器與功能齊全的閃存單片機(jī)集于一體。這樣的集成提供了數(shù)字解決方案的靈活性，也具備基于模擬的控制器的速度、性能和分辨率。MCP19111器件支持高達(dá)32V的運(yùn)行，并提供針對(duì)同步降壓應(yīng)用而配置的集成MOSFET驅(qū)動(dòng)器。當(dāng)與Microchip擴(kuò)展的高速M(fèi)OSFET系列結(jié)合使用時(shí)，MCP19111能夠驅(qū)動(dòng)可定制的高效率電源轉(zhuǎn)換。</p><p>　　<a class="contentlabel" href="http://www.ex-cimer.com/news/listbylabel/label/安森美"><em>安森美</em></a>半導(dǎo)體</p><p>　　<a class="contentlabel" href="http://www.ex-cimer.com/news/listbylabel/label/安森美"><em>安森美</em></a>半導(dǎo)體一直致力于解決電源管理領(lǐng)域最富于挑戰(zhàn)性的問題。<a class="contentlabel" href="http://www.ex-cimer.com/news/listbylabel/label/安森美"><em>安森美</em></a>半導(dǎo)體設(shè)計(jì)和生產(chǎn)的電源管理芯片能夠節(jié)省多達(dá)90%的待機(jī)能耗。安森美半導(dǎo)體的GreenPoint高能效電源參考設(shè)計(jì)系列包括ATX電源、液晶電視機(jī)電源和筆記本電腦適配器等，均符合現(xiàn)有的高效標(biāo)準(zhǔn)。</p><p>　　安森美半導(dǎo)體電源管理上的重點(diǎn)方向：1、GreenPoint高能效電源解決方案系列。2、計(jì)算機(jī)電源管理解決方案。3、數(shù)字消費(fèi)電子產(chǎn)品電源解決方案。</p><p>　　電源管理芯片NCP1421升壓芯片。該電源管理芯片，為同步整流模式，內(nèi)置MOSFET，可以省去外置的二極管和場(chǎng)效應(yīng)管，同時(shí)該芯片的效率較高，在2.5V輸入輸出3.3V@200mA時(shí)效率高達(dá)94%，在實(shí)際的使用過程中對(duì)比其他半導(dǎo)體的一些升壓芯片，采用NCP1421使用的實(shí)際時(shí)間大約有15%左右的提升。</p><p>　　特瑞仕半導(dǎo)體</p><p>　　特瑞仕半導(dǎo)體開發(fā)了適用于0.4A/0.7A、線圈和控制IC組成一體的世界最小尺寸的“microDC/DC”轉(zhuǎn)換器、XCL223/XCL224系列產(chǎn)品。XCL223/XCL224系列產(chǎn)品是把線圈和控制IC組成一體的超小型(外形尺寸：2.25mmx1.5mmxh0.75mm)降壓microDC/DC轉(zhuǎn)換器、實(shí)現(xiàn)了在輸出電流為0.4A/0.7A輸出中的世界最小型超薄化。</p><p>　　因?yàn)橥饨恿慵恍枳芳恿?個(gè)陶瓷電容，即可構(gòu)成電源電路，有利于節(jié)省電路板面積的空間、及縮短開發(fā)工時(shí)。此外，由于內(nèi)置了線圈，使之易于電路板布局、能把不需要的輻射噪聲及電路工作障礙抑制在最小限度。它的工作電壓范圍在2.7V～5.5V之間，能在0.8～3.6V(精度±2.0%)的范圍內(nèi)以0.05V的間隔選擇輸出電壓。振蕩頻率為3.0MHz、能從PWM控制(XCL223)或PWM/PFM自動(dòng)切換控制(XCL224)中任選一種控制方式。XCL223/XCL224系列產(chǎn)品采用了HiSAT-COT(*2)、最適用于要求高速瞬態(tài)響應(yīng)的光纜及小型電腦外圍機(jī)器、搭載了CPU等便攜式機(jī)器及數(shù)字式機(jī)器。</p><p><br /></p><center><img alt="電源管理芯片廠商誰主沉浮？" width="336" height="328" src="http://editerupload.eepw.com.cn/201602/19821454717445.jpg" /></center><p><br /></p><p>　　【XCL223/XCL224系列特點(diǎn)】</p><p>　　●在輸出電流0.4A/0.7A等級(jí)的線圈一體型降壓DC/DC轉(zhuǎn)換器中，實(shí)現(xiàn)了世界最小尺寸</p><p>　　●采用了HiSAT-COT、實(shí)現(xiàn)了高速瞬態(tài)響應(yīng)</p><p>　　●能對(duì)應(yīng)于光器件、便攜式機(jī)器及數(shù)字式機(jī)器等應(yīng)用目的</p><p>　　●高效率(90%：4.2V?3.3V300mA時(shí))</p><p>　　●最適用于通過小型化縮小電路板實(shí)裝面積。</p><p>　　ADI電源管理</p><p>　　ADI公司的ADP1047/ADP1048是具有精確AC電源計(jì)量的數(shù)字功率系數(shù)修正(PFC)控制器：靈活、單相、數(shù)字功率因數(shù)校正(PFC)控制器，真正的交流功率有效值測(cè)量，增強(qiáng)的動(dòng)態(tài)響應(yīng)，通過開關(guān)頻率擴(kuò)頻技術(shù)降低EMI。ADP1047用于單相PFC應(yīng)用;而ADP1048用插入式和無橋式PFC應(yīng)用，使用戶具有最佳的系統(tǒng)性能，最大化的效率，降低產(chǎn)品上市時(shí)間。主要應(yīng)用在各種應(yīng)用的AC/DC電源，服務(wù)器和存儲(chǔ)設(shè)備，網(wǎng)絡(luò)和通信基礎(chǔ)設(shè)備，工業(yè)和醫(yī)療設(shè)備。</p><p><br /></p><center><img alt="電源管理芯片廠商誰主沉??？" width="390" height="300" src="http://editerupload.eepw.com.cn/201602/90891454717445.jpg" /></center><p><br /></p><p style="text-align:center;">　　ADP1047典型應(yīng)用電路圖</p><p>　　這些電源管理芯片的應(yīng)用范圍十分廣泛，包括能源產(chǎn)生與分配，軍用與民用航空，家庭音響系統(tǒng)部件，醫(yī)療電子與汽車應(yīng)用。電源管理芯片在電子設(shè)備系統(tǒng)中擔(dān)負(fù)起對(duì)電能的變換、分配、檢測(cè)及其他電能管理的職責(zé)。在人們最熟悉的消費(fèi)領(lǐng)域，使用電源管理芯片的常見設(shè)備包括數(shù)字機(jī)頂盒、液晶與等離子電視、游戲控制臺(tái)、平板監(jiān)視器和PC服務(wù)器，以及手機(jī)、平板電腦和普通電腦。</p><p>　　</p></span>  <div class="qbhntwg" 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="mpnekqa" class="hAd8"> <br></span>   </div> </article> <div id="vcxoued" class="clear"></div> <br/> <div id="teznbwv" class="hAd6"> <div class="yqagizj" id="relA" 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