42 lines
151 KiB
Markdown
42 lines
151 KiB
Markdown
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title: 肖特基
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updated: 2022-08-08 08:25:32Z
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created: 2022-01-08 13:17:45Z
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---
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml"><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;">
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<div><br /><br />
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</div>
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<div><span style="font-family: Consolas; font-weight: bold;">压降低，反向恢复时间低，反向偏置电压小</span>
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<div><span style="font-family: Consolas;"><br /></span>
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</div>
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<div><span style="font-family: Consolas;">取自维基百科
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<h1 id="firstHeading" class="firstHeading" lang="zh-Hans-CN" dir="ltr" style="color: rgb(0, 0, 0); margin: 0px 0px 0.25em; padding: 0px; overflow: visible; border-bottom: 1px solid rgb(162, 169, 177); font-size: 1.8em; font-weight: normal; font-family: 'Linux Libertine', Georgia, Times, serif; line-height: 1.3; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;"><a href="https://zh.wikipedia.org/wiki/%E8%82%96%E7%89%B9%E5%9F%BA%E4%BA%8C%E6%9E%81%E7%AE%A1">肖特基二极管</a>
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</h1></span>
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<div><span style="font-family: Consolas;"><span style="color: rgb(32, 33, 34); font-size: 15.008px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); float: none; display: inline !important;"></span><span style="color: rgb(32, 33, 34); font-size: 15.008px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); float: none; display: inline !important;">肖特基二极体的</span><a href="https://zh.wikipedia.org/w/index.php?title=%E5%B0%8E%E9%80%9A%E9%9B%BB%E5%A3%93&action=edit&redlink=1" class="new" title="导通电压（页面不存在）" style="text-decoration: none; color: rgb(186, 0, 0); background-image: none; background-color: rgb(255, 255, 255); font-size: 15.008px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-position: initial initial; background-repeat: initial initial;">导通电压</a><span style="color: rgb(32, 33, 34); font-size: 15.008px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); float: none; display: inline !important;">非常低。一般的二极管在电流流过时，会产生约 0.7-1.7 伏特的电压降，不过肖特基二极管的电压降只有 0.15-0.45 伏特，因此可以提升系统的效率。</span><br /></span>
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<div><span style="font-family: Consolas;"><span style="color: rgb(32, 33, 34); font-size: 15.008px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); float: none; display: inline !important;">一般二极管的反向恢复时间大约是数百nS</span><span id="noteTag-cite_ref-sup" style="color: rgb(32, 33, 34); font-size: 15.008px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255);"><sup id="cite_ref-1" class="reference" style="line-height: 1; unicode-bidi: isolate; white-space: nowrap; font-weight: normal; font-style: normal;"><a href="https://zh.wikipedia.org/wiki/%E8%82%96%E7%89%B9%E5%9F%BA%E4%BA%8C%E6%9E%81%E7%AE%A1#cite_note-1" style="text-decoration: none; color: rgb(6, 69, 173); background: none; white-space: nowrap;">[注 1]</a></sup></span><span style="color: rgb(32, 33, 34); font-size: 15.008px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); float: none; display: inline !important;">，若是高速二极管则会低于一百 nS，肖特基二极管没有反向恢复时间，因此小信号的肖特基二极管切换时间约为数十 pS</span><span id="noteTag-cite_ref-sup" style="color: rgb(32, 33, 34); font-size: 15.008px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255);"><sup id="cite_ref-2" class="reference" style="line-height: 1; unicode-bidi: isolate; white-space: nowrap; font-weight: normal; font-style: normal;"><a href="https://zh.wikipedia.org/wiki/%E8%82%96%E7%89%B9%E5%9F%BA%E4%BA%8C%E6%9E%81%E7%AE%A1#cite_note-2" style="text-decoration: none; color: rgb(6, 69, 173); background: none; white-space: nowrap;">[注 2]</a></sup></span><span style="color: rgb(32, 33, 34); font-size: 15.008px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); float: none; display: inline !important;">，特殊的大容量肖特基二极管切换时间也才数十 pS。由于一般二极管在反向恢复时间内会因反向电流而造成</span><a href="https://zh.wikipedia.org/wiki/%E9%9B%BB%E7%A3%81%E5%B9%B2%E6%93%BE" title="电磁干扰" style="text-decoration: none; color: rgb(6, 69, 173); background-image: none; background-color: rgb(255, 255, 255); font-size: 15.008px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-position: initial initial; background-repeat: initial initial;">EMI</a><span style="color: rgb(32, 33, 34); font-size: 15.008px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-
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<div><span style="font-family: Consolas;"><span style="color: rgb(32, 33, 34); font-size: 15.008px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); float: none; display: inline !important;">肖特基二极管最大的缺点是其反向偏置较低及反向漏电流偏大，</span></span><br />
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</div>
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<div><span style="font-family: Consolas;"><br /></span>
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<div><span style="font-family: Consolas;"><img src="data:image/png;base64,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" alt="" title="" /><br /></span>
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</div>
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<div><span style="font-family: Consolas;">
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<p style="box-sizing: border-box; margin: 0px 0px 1em; padding: 0px; font-size: 15px; border-width: 0px; border-style: initial; border-color: initial; color: rgb(70, 70, 70); font-family: 'SF Pro SC', 'SF Pro Text', 'SF Pro Icons', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei UI', 'Microsoft YaHei', 'Helvetica Neue', Arial, simsun, sans-serif; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;">与一般的PN结二极管相比，具有正向电压 (V<sub style="box-sizing: border-box; margin: 0px; padding: 0px; font-size: 12px; line-height: 0; position: relative; vertical-align: baseline; bottom: -0.25em; border-width: 0px; border-style: initial; border-color: initial;">F</sub>) 低，开关速度快的特点。但漏电流 (I<sub style="box-sizing: border-box; margin: 0px; padding: 0px; font-size: 12px; line-height: 0; position: relative; vertical-align: baseline; bottom: -0.25em; border-width: 0px; border-style: initial; border-color: initial;">R</sub>) 大，有如果热设计错误则引起热失控的缺点。
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<figure class="img-box-02 border" style="box-sizing: border-box; margin: 20px 0px; padding: 20px; display: block; font-size: 15px; border: 1px solid rgb(221, 221, 221); text-align: center; color: rgb(70, 70, 70); font-family: 'SF Pro SC', 'SF Pro Text', 'SF Pro Icons', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei UI', 'Microsoft YaHei', 'Helvetica Neue', Arial, simsun, sans-serif; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;"><img alt="图 - 肖特基势垒二极管为低VF、大IR" src="data:image/png;base64,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</figure>
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<h2 class="hdg02-02" style="box-sizing: border-box; margin: 0px 0px 25px; padding: 13px 10px 13px 30px; font-family: 'SF Pro SC', 'SF Pro Text', 'SF Pro Icons', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei UI', 'Microsoft YaHei', 'Helvetica Neue', Arial, simsun, sans-serif; font-weight: normal; line-height: 1.2; color: rgb(51, 51, 51); font-size: 30px; border-width: 0px; border-style: initial; border-color: initial; position: relative; background-color: rgb(230, 236, 239); font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;">关于热失控
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</h2>
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<p style="box-sizing: border-box; margin: 0px 0px 1em; padding: 0px; font-size: 15px; border-width: 0px; border-style: initial; border-color: initial; color: rgb(70, 70, 70); font-family: 'SF Pro SC', 'SF Pro Text', 'SF Pro Icons', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei UI', 'Microsoft YaHei', 'Helvetica Neue', Arial, simsun, sans-serif; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;">肖特基势垒二极管在特性上会因正向电流大而导致发热。发热则漏电流 (I<sub style="box-sizing: border-box; margin: 0px; padding: 0px; font-size: 12px; line-height: 0; position: relative; vertical-align: baseline; bottom: -0.25em; border-width: 0px; border-style: initial; border-color: initial;">R</sub>) 变大，同时外壳温度、环境温度也上升。如果热设计错误，发热将高于散热，达不到热平衡持续发热。其结果漏电流 (I<sub style="box-sizing: border-box; margin: 0px; padding: 0px; font-size: 12px; line-height: 0; position: relative; vertical-align: baseline; bottom: -0.25em; border-width: 0px; border-style: initial; border-color: initial;">R</sub>) 也持续增加，最终元器件遭到损坏。这种现象叫做热失控。
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</p>
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<figure class="img-box-02 border" style="box-sizing: border-box; margin: 20px 0px; padding: 20px; display: block; font-size: 15px; border: 1px solid rgb(221, 221, 221); text-align: center; color: rgb(70, 70, 70); font-family: 'SF Pro SC', 'SF Pro Text', 'SF Pro Icons', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei UI', 'Microsoft YaHei', 'Helvetica Neue', Arial, simsun, sans-serif; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;"><img alt="图 - 发热> 散热→IR回落／发热< 散热→热失控" src="data:image/png;base64,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