<?xml-stylesheet type="text/xsl" href="https://e2echina.ti.com/cfs-file/__key/system/syndication/rss.xsl" media="screen"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/" xmlns:wfw="http://wellformedweb.org/CommentAPI/"><channel><title>简单电路可产生快速可控的瞬态负载</title><link>/blogs_/b/power_house/posts/52008</link><description>作者: Ryan Manack 许多应用处理器均需要现场可编程门阵列（FPGA）、专用集成电路（ASIC）和其它大功率中央处理器（CPU）等负载的电流快速变化。这些系统的电源要求特别注意控制拓扑结构选择和输出滤波器设计，以支持快速电流阶跃。一旦设计完成，关键的挑战就是测试电源与规定的电流阶跃和转换速率。在本文中，我们举例说明了一个简单电路，可进行超过300安培/微秒（A/us）的电流转换。 用电子负载测试电源的瞬态响应很常见。对许多系统轨（如服务器的3.3V或5V总线）而言，电子负载很容易配置为在2</description><dc:language>zh-CN</dc:language><generator>Telligent Community 13</generator><item><title>回复:简单电路可产生快速可控的瞬态负载</title><link>https://e2echina.ti.com/blogs_/b/power_house/posts/52008</link><pubDate>Fri, 06 Jul 2018 03:50:40 GMT</pubDate><guid isPermaLink="false">91561404-af28-475a-b96b-cb6cbaadd097:4dd3d2dd-ffbd-4810-9a8f-220494f37be4</guid><dc:creator>michael yang1</dc:creator><slash:comments>0</slash:comments><description>&lt;p&gt;严格意义上，此时的负载阶跃的爬升和下降斜率并不是完全线性的，所以实际含有的电流转换率频率并是按照理想状况进行，这意味着，这个测试系统并不能真实的反映负载阶跃的频率，我们知道负载阶跃测试是用来检验环路的重要依据，所以这样的一个并非理想状态（电流爬升斜率并非线性，而是指数）的负载阶跃测试仪，并不能真实的测试评估环路的带宽，因为负载变化斜率含有其他的斜率成分。&lt;/p&gt;
&lt;p&gt;一个电源系统环路设计的带宽再高，只要负载阶跃的斜率足够快，一定会测到瞬态出现抖动的情况，所以用这个测试体系不能精确反映环路，只能用来做一个非常粗线条的评估。&lt;/p&gt;
&lt;p&gt;真实的负载阶跃测试仪，应该能够测试线性的不同电流上升下降斜率，这样可以一直扫描，找到环路响应变差的极限，从而锚定该环路适用的负载领域）&lt;/p&gt;
&lt;img src="https://e2echina.ti.com/aggbug?PostID=52008&amp;AppID=65&amp;AppType=Weblog&amp;ContentType=0" width="1" height="1"&gt;</description></item><item><title>回复:简单电路可产生快速可控的瞬态负载</title><link>https://e2echina.ti.com/blogs_/b/power_house/posts/52008</link><pubDate>Wed, 30 Sep 2015 03:32:51 GMT</pubDate><guid isPermaLink="false">91561404-af28-475a-b96b-cb6cbaadd097:4dd3d2dd-ffbd-4810-9a8f-220494f37be4</guid><dc:creator>user1830873</dc:creator><slash:comments>0</slash:comments><description>&lt;p&gt;图文并茂的阐述了通过分立MOSFET加检测电阻器电路负载，以高转换速率测试负载瞬变是可以实现的。通过公式计算和实践相结合，很好的验证了这一点，讲解详细，思路清晰，值得推荐和学习。&lt;/p&gt;
&lt;img src="https://e2echina.ti.com/aggbug?PostID=52008&amp;AppID=65&amp;AppType=Weblog&amp;ContentType=0" width="1" height="1"&gt;</description></item><item><title>回复:简单电路可产生快速可控的瞬态负载</title><link>https://e2echina.ti.com/blogs_/b/power_house/posts/52008</link><pubDate>Tue, 22 Sep 2015 13:01:19 GMT</pubDate><guid isPermaLink="false">91561404-af28-475a-b96b-cb6cbaadd097:4dd3d2dd-ffbd-4810-9a8f-220494f37be4</guid><dc:creator>zhirui zheng</dc:creator><slash:comments>0</slash:comments><description>&lt;p&gt;文章内容，还算详细&lt;/p&gt;
&lt;img src="https://e2echina.ti.com/aggbug?PostID=52008&amp;AppID=65&amp;AppType=Weblog&amp;ContentType=0" width="1" height="1"&gt;</description></item><item><title>回复:简单电路可产生快速可控的瞬态负载</title><link>https://e2echina.ti.com/blogs_/b/power_house/posts/52008</link><pubDate>Fri, 18 Sep 2015 01:01:15 GMT</pubDate><guid isPermaLink="false">91561404-af28-475a-b96b-cb6cbaadd097:4dd3d2dd-ffbd-4810-9a8f-220494f37be4</guid><dc:creator>YG TYG</dc:creator><slash:comments>0</slash:comments><description>&lt;p&gt;mosfet这样运用很好&lt;/p&gt;
&lt;img src="https://e2echina.ti.com/aggbug?PostID=52008&amp;AppID=65&amp;AppType=Weblog&amp;ContentType=0" width="1" height="1"&gt;</description></item><item><title>回复:简单电路可产生快速可控的瞬态负载</title><link>https://e2echina.ti.com/blogs_/b/power_house/posts/52008</link><pubDate>Wed, 16 Sep 2015 12:23:29 GMT</pubDate><guid isPermaLink="false">91561404-af28-475a-b96b-cb6cbaadd097:4dd3d2dd-ffbd-4810-9a8f-220494f37be4</guid><dc:creator>user3500957</dc:creator><slash:comments>0</slash:comments><description>&lt;p&gt;学习了对于电源设计的测试。&lt;/p&gt;
&lt;img src="https://e2echina.ti.com/aggbug?PostID=52008&amp;AppID=65&amp;AppType=Weblog&amp;ContentType=0" width="1" height="1"&gt;</description></item><item><title>回复:简单电路可产生快速可控的瞬态负载</title><link>https://e2echina.ti.com/blogs_/b/power_house/posts/52008</link><pubDate>Mon, 14 Sep 2015 15:42:29 GMT</pubDate><guid isPermaLink="false">91561404-af28-475a-b96b-cb6cbaadd097:4dd3d2dd-ffbd-4810-9a8f-220494f37be4</guid><dc:creator>siyang gong1</dc:creator><slash:comments>0</slash:comments><description>&lt;p&gt;文章写得挺好，读过后收益匪浅&lt;/p&gt;
&lt;img src="https://e2echina.ti.com/aggbug?PostID=52008&amp;AppID=65&amp;AppType=Weblog&amp;ContentType=0" width="1" height="1"&gt;</description></item><item><title>回复:简单电路可产生快速可控的瞬态负载</title><link>https://e2echina.ti.com/blogs_/b/power_house/posts/52008</link><pubDate>Sat, 12 Sep 2015 10:59:17 GMT</pubDate><guid isPermaLink="false">91561404-af28-475a-b96b-cb6cbaadd097:4dd3d2dd-ffbd-4810-9a8f-220494f37be4</guid><dc:creator>user4393791</dc:creator><slash:comments>0</slash:comments><description>&lt;p&gt;文章写的很不错。MOSFET运用的很好。学习了&lt;/p&gt;
&lt;img src="https://e2echina.ti.com/aggbug?PostID=52008&amp;AppID=65&amp;AppType=Weblog&amp;ContentType=0" width="1" height="1"&gt;</description></item><item><title>回复:简单电路可产生快速可控的瞬态负载</title><link>https://e2echina.ti.com/blogs_/b/power_house/posts/52008</link><pubDate>Thu, 10 Sep 2015 06:41:43 GMT</pubDate><guid isPermaLink="false">91561404-af28-475a-b96b-cb6cbaadd097:4dd3d2dd-ffbd-4810-9a8f-220494f37be4</guid><dc:creator>junling Ma</dc:creator><slash:comments>0</slash:comments><description>&lt;p&gt;快速切换的mosfet很重要&lt;/p&gt;
&lt;img src="https://e2echina.ti.com/aggbug?PostID=52008&amp;AppID=65&amp;AppType=Weblog&amp;ContentType=0" width="1" height="1"&gt;</description></item><item><title>回复:简单电路可产生快速可控的瞬态负载</title><link>https://e2echina.ti.com/blogs_/b/power_house/posts/52008</link><pubDate>Tue, 08 Sep 2015 14:41:57 GMT</pubDate><guid isPermaLink="false">91561404-af28-475a-b96b-cb6cbaadd097:4dd3d2dd-ffbd-4810-9a8f-220494f37be4</guid><dc:creator>ZHANG QIU</dc:creator><slash:comments>0</slash:comments><description>&lt;p&gt;看了受益匪浅啊&lt;/p&gt;
&lt;img src="https://e2echina.ti.com/aggbug?PostID=52008&amp;AppID=65&amp;AppType=Weblog&amp;ContentType=0" width="1" height="1"&gt;</description></item><item><title>回复:简单电路可产生快速可控的瞬态负载</title><link>https://e2echina.ti.com/blogs_/b/power_house/posts/52008</link><pubDate>Tue, 08 Sep 2015 12:45:21 GMT</pubDate><guid isPermaLink="false">91561404-af28-475a-b96b-cb6cbaadd097:4dd3d2dd-ffbd-4810-9a8f-220494f37be4</guid><dc:creator>yunlong liu1</dc:creator><slash:comments>0</slash:comments><description>&lt;p&gt;正在学习中，让我又多了解了电路知识，真是一个不错的文章&lt;/p&gt;
&lt;img src="https://e2echina.ti.com/aggbug?PostID=52008&amp;AppID=65&amp;AppType=Weblog&amp;ContentType=0" width="1" height="1"&gt;</description></item><item><title>回复:简单电路可产生快速可控的瞬态负载</title><link>https://e2echina.ti.com/blogs_/b/power_house/posts/52008</link><pubDate>Mon, 07 Sep 2015 11:44:54 GMT</pubDate><guid isPermaLink="false">91561404-af28-475a-b96b-cb6cbaadd097:4dd3d2dd-ffbd-4810-9a8f-220494f37be4</guid><dc:creator>L.S L.S</dc:creator><slash:comments>0</slash:comments><description>&lt;p&gt;表示正在学习&lt;/p&gt;
&lt;img src="https://e2echina.ti.com/aggbug?PostID=52008&amp;AppID=65&amp;AppType=Weblog&amp;ContentType=0" width="1" height="1"&gt;</description></item><item><title>回复:简单电路可产生快速可控的瞬态负载</title><link>https://e2echina.ti.com/blogs_/b/power_house/posts/52008</link><pubDate>Mon, 07 Sep 2015 08:37:26 GMT</pubDate><guid isPermaLink="false">91561404-af28-475a-b96b-cb6cbaadd097:4dd3d2dd-ffbd-4810-9a8f-220494f37be4</guid><dc:creator>Huaiqiao Guo</dc:creator><slash:comments>0</slash:comments><description>&lt;p&gt;想不到一个简单的电路却有着较为复杂的分析，真的很佩服。&lt;/p&gt;
&lt;img src="https://e2echina.ti.com/aggbug?PostID=52008&amp;AppID=65&amp;AppType=Weblog&amp;ContentType=0" width="1" height="1"&gt;</description></item><item><title>回复:简单电路可产生快速可控的瞬态负载</title><link>https://e2echina.ti.com/blogs_/b/power_house/posts/52008</link><pubDate>Mon, 07 Sep 2015 08:25:25 GMT</pubDate><guid isPermaLink="false">91561404-af28-475a-b96b-cb6cbaadd097:4dd3d2dd-ffbd-4810-9a8f-220494f37be4</guid><dc:creator>user4015270</dc:creator><slash:comments>0</slash:comments><description>&lt;p&gt;MOSFET切换时可以降低环路中的电感啊。&lt;/p&gt;
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