天津大功率電源模塊批發(fā)多少錢服務(wù)為先上海多商電子供應(yīng)-b2b網(wǎng)站_b2b電子商務(wù)平臺【買產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content="因為大功率電源模塊產(chǎn)品有模塊電源的PCB設(shè)計規(guī)范要求，它要考慮散熱設(shè)計、EMC設(shè)計、干擾設(shè)計和生產(chǎn)工藝設(shè)計等等，涉及的內(nèi)容非常多，所以PCB設(shè)計在大功率電源模塊產(chǎn)品開發(fā)過程中是作為較重要的環(huán)節(jié)之一來對待的。大功率電源模塊都不是線性電源類型，"><meta name="keywords" content="天津大功率電源模塊批發(fā)多少錢,大功率電源模塊"><link rel="canonical" href="http://www.cdcfah.com/"/><meta name="applicable-device" content="pc"><link rel="shortcut icon" href="/static/new_net_01/images/favicon.ico"><link rel="stylesheet" href="/static/new_net_01/css/slick.css" /><link rel="stylesheet" href="/static/new_net_01/css/addnew.css"><link rel="stylesheet" href="/static/new_net_01/css/sidenav.css"><link rel="stylesheet" href="/static/new_net_01/css/style.css" /><link rel="stylesheet" href="/static/new_net_01/css/tab.css"><link rel="stylesheet" href="/static/new_net_01/css/404.css"> <meta name="baidu-site-verification" content="OBVzrC9aaQ" /> <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><body> <h1><a href="http://www.cdcfah.com/">六月丁香婷婷亚洲中文字幕,欧美精品高清一区二区蜜芽,尤物92午夜福利视频,精品视频一区二区三区在线观看</a></h1> <div style="position:fixed;left:-9000px;top:-9000px;"><object id="qgqbi"></object><delect id="qgqbi"><sub id="qgqbi"><dl id="qgqbi"></dl></sub></delect><track id="qgqbi"></track><tr id="qgqbi"></tr><video id="qgqbi"></video><xmp id="qgqbi"><span id="qgqbi"></span></xmp><span id="qgqbi"></span><strong id="qgqbi"><em id="qgqbi"><sup id="qgqbi"><progress id="qgqbi"></progress></sup></em></strong><dl id="qgqbi"><small id="qgqbi"></small></dl><wbr id="qgqbi"></wbr><noscript id="qgqbi"></noscript><tr id="qgqbi"></tr><track id="qgqbi"><dl id="qgqbi"></dl></track><label id="qgqbi"><em id="qgqbi"></em></label><tbody id="qgqbi"></tbody><blockquote id="qgqbi"></blockquote><dfn id="qgqbi"><center 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href="http://www.cdcfah.com/cp/third-dianyuan_qtdy/">其他電源</a>?天津大功率電源模塊批發(fā)多少錢服務(wù)為先上海多商電子供應(yīng)</p><div id="ico3eg8" class="leftbox clearfix"><h1>天津大功率電源模塊批發(fā)多少錢服務(wù)為先上海多商電子供應(yīng)</h1><div id="y3ifcjy" class="proBig"><div id="mldxjf7" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/shdsdz/637393060608619787/3503048.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="vew88el" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/shdsdz/637393060608619787/3503048.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="xmjda3p" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</span>面議</p><p><span>所在地：</span>上海市</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>天津大功率電源模塊批發(fā)多少錢,大功率電源模塊</p><p><span>***更新：</span>2021-02-01 08:15:49</p><p><span id="click" >瀏覽次數(shù)：2次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="edfc2t3" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上海多商電子有限公司</a></p><p><span>聯(lián)系人：</span>吳加斌</p><p><span>郵箱: </span>wu867@126.com</p><p><span>電話: </span>18121221687</p><p><span>傳真: </span>021_69585559</p><p><span>網(wǎng)址: </span>http://www.10000kw.com</p><p><span>手機(jī): </span>021-69585559</p><p><span>地址: </span>上海市嘉定區(qū)科福路358號4號樓4樓</p><p>[當(dāng)前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="uypm23r" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="3acjlim" class="box"><p><p style="text-indent:25px">因為大功率電源模塊產(chǎn)品有模塊電源的PCB設(shè)計規(guī)范要求，它要考慮散熱設(shè)計、EMC設(shè)計、干擾設(shè)計和生產(chǎn)工藝設(shè)計等等，涉及的內(nèi)容非常多，所以PCB設(shè)計在大功率電源模塊產(chǎn)品開發(fā)過程中是作為較重要的環(huán)節(jié)之一來對待的。大功率電源模塊都不是線性電源類型，都是開關(guān)電源，在開關(guān)管開通、關(guān)斷時，電壓和電流都會被斬波，造成較大瞬態(tài)變化（di/dt、dv/dt），所以開關(guān)電源是較大的EMC干擾源，天津大功率電源模塊批發(fā)多少錢。隔離電源模塊常用的電路拓?fù)洌焊綦x正激和隔離反激，天津大功率電源模塊批發(fā)多少錢。通過產(chǎn)品內(nèi)部電路設(shè)計+PCB設(shè)計，天津大功率電源模塊批發(fā)多少錢，使得產(chǎn)品的EMC性能達(dá)到較優(yōu)狀態(tài)。大功率電源模塊還應(yīng)有過溫保護(hù)的功能。天津大功率電源模塊批發(fā)多少錢</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="天津大功率電源模塊批發(fā)多少錢,大功率電源模塊" src="https://tyunfile.71360.com/UploadFile/shdsdz/637393060608619787/3503048.png"></div><p style="text-indent:25px">由于電源模塊越趨于小型化，功率密度相應(yīng)越來越高，大功率電源模塊有關(guān)熱設(shè)計方面的問題尤其突出。特別是對使用有電解電容的電源模塊，高溫會使電解電容的電解液加速消耗，有效減少電解電容的壽命。高溫會使元器件材料加速老化，例如使得變壓器漆包線的絕緣特性降低，導(dǎo)致絕緣耐壓不良甚至造成匝間短路。因此好的熱設(shè)計不僅可延長大功率電源模塊和其周圍元器件的使用壽命，還可使整個產(chǎn)品發(fā)熱均勻，減少故障的發(fā)生。所以除了基本性能參數(shù)測試，多方面的高低溫測試，電應(yīng)力和熱應(yīng)力測試，保證足夠的降額設(shè)計要求，并通過長時間的老化測試，才可以判斷大功率電源模塊是否安全可靠。天津大功率電源模塊批發(fā)多少錢大功率電源模塊每一模塊的設(shè)計及測試都按照標(biāo)準(zhǔn)性能的規(guī)定進(jìn)行。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="天津大功率電源模塊批發(fā)多少錢,大功率電源模塊" src="https://tyunfile.71360.com/UploadFile/shdsdz/637393060385120850/9021330.png"></div><p style="text-indent:25px">一般在不同的使用領(lǐng)域，對大功率電源模塊的工作溫度范圍要求各異：高低溫測試是用來確定產(chǎn)品在低溫、高溫兩個極端氣候環(huán)境條件下的適應(yīng)性和一致性，檢查設(shè)計余量是否足夠。因為元器件的特性在低溫、高溫的條件下會發(fā)生一定的變化，性能參數(shù)具有溫度漂移特性。所以往往很多電源模塊在常溫測試通過，一旦拿到高低溫環(huán)境測試就發(fā)現(xiàn)工作不正?；蛘咝阅軈?shù)明顯下降。同時通過長時間高溫老化可以使元器件的缺陷、焊接和裝配等生產(chǎn)過程中存在的隱患提前暴露出來。對于大功率電源模塊的應(yīng)力設(shè)計，重點(diǎn)關(guān)注場效應(yīng)管(MOS管)、二極管、變壓器、功率電感、電解電容、限流電阻等。保證全電壓范圍內(nèi)在穩(wěn)態(tài)、瞬態(tài)、短路等各種極限條件下都能有足夠的降額，以保障產(chǎn)品的可靠性。</p><p style="text-indent:25px">大功率電源模塊在電壓轉(zhuǎn)換過程中有能量損耗，產(chǎn)生熱能導(dǎo)致模塊發(fā)熱，降低電源的轉(zhuǎn)換效率，影響電源模塊正常工作，但什么情況下會造成大功率電源模塊發(fā)熱較嚴(yán)重呢？負(fù)載過流，超出數(shù)據(jù)手冊應(yīng)用范圍使得內(nèi)部關(guān)鍵器件溫度飆升；環(huán)境溫度過高或散熱不良；其他大發(fā)熱源熱傳遞。使用線性電源時要加散熱片,或選擇效率高的開關(guān)電源；輸出功率更大的模塊，確保有70%~80%的負(fù)載降額；降低環(huán)境溫度，保持散熱良好。噪聲是衡量電源模塊優(yōu)劣的一大關(guān)鍵指標(biāo)，在應(yīng)用電路中，模塊周邊元器件的設(shè)計布局等也會影響輸出噪聲，哪些因素對輸出噪聲有較大影響呢？電源模塊與主電路噪聲敏感元件距離過近；主電路噪聲敏感元件的電源輸入端處未接去耦電容；多路系統(tǒng)中各單路輸出的電源模塊之間產(chǎn)生差頻干擾；地線處理不合理；電源模塊輸入端的噪聲過大，未處理，直接耦合到電源模塊輸出端；大功率電源模塊輸出端負(fù)載過輕，輕于10%的額定負(fù)載造成電壓偏高。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="天津大功率電源模塊批發(fā)多少錢,大功率電源模塊" src="https://tyunfile.71360.com/UploadFile/shdsdz/637393060763231217/4135973.png"></div><p style="text-indent:25px">在較近幾年中，大功率電源模塊產(chǎn)品在通訊通信領(lǐng)域的應(yīng)用范圍得到了較大的拓展，新產(chǎn)品的研發(fā)速度也明顯加快?，F(xiàn)在我們將會分享一種大功率開關(guān)電源的設(shè)計方案，本方案采用的是采用半橋式功率逆變電路，大功率電源模塊主體部分的設(shè)計相對簡單，希望能夠?qū)Ω魑还こ處煹难邪l(fā)設(shè)計工作有所幫助。這種基于SG3525的半橋式大功率開關(guān)電源的電路系統(tǒng)設(shè)計，在該電路系統(tǒng)中，三相交流電經(jīng)EMI濾波器濾波，有效減少了交流電源輸入的電磁干擾，同時防止開關(guān)電源產(chǎn)生的諧波串?dāng)_到輸入電源端。再經(jīng)過橋式整流電路、濾波電路變成直流電壓加在P、N兩點(diǎn)間。P、N之間接入一個小容量、高耐壓的無感電容，起到高頻濾波的作用。大功率電源模塊保護(hù)：短路保護(hù)、過壓保護(hù)、欠壓保護(hù)、過流保護(hù)、其它保護(hù)。天津大功率電源模塊批發(fā)多少錢</p><p style="text-indent:25px">大功率電源模塊隔離就是將輸出與輸入進(jìn)行電路上的分離。天津大功率電源模塊批發(fā)多少錢</p><p style="text-indent:25px">大功率電源模塊啟動困難，首先是破壞力較小的情況——大功率電源模塊在啟動中出現(xiàn)啟動困難，甚至啟動不了。大家在使用大功率電源模塊過程中可能會出現(xiàn)電源模塊輸出端電壓正常，輸出端就是沒有任何輸出，電源模塊也無損壞，是什么原因呢？具體原因如下所示：外接電容過大；容性負(fù)載過大；負(fù)載電流過大；輸入電源功率不夠。針對這一類問題，可以通過調(diào)整輸出端的電容以及負(fù)載或調(diào)整輸入端的功率進(jìn)行改善，具體如下所示：外接電容過大，在電源模塊啟動時向其充電較長時間，難以啟動，需要選擇合適的容性負(fù)載；容性負(fù)載過大時需可先串聯(lián)一個合適的電感；輸出負(fù)載過重是會造成啟動時間延長，選擇合適負(fù)載；換用功率更大的輸入電源。天津大功率電源模塊批發(fā)多少錢</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3109792.html</p></div></div></div></div></div><div id="p3p7q7m" class="page-right twoColRt"><div id="rgdac78" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="mwdanpq" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" alt="福建ZF配件哪家強(qiáng) 信息推薦自業(yè)物資供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強(qiáng) 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