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Output current ripple reduction of LED driver using ceramic‐capacitor‐input circuit and buck‐boost converter

机译：使用陶瓷电容输入电路和降压 - 升压转换器输出LED驱动器的电流纹波减少

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Abstract >This article proposes an LED driver that consists of a ceramic‐capacitor‐input rectifier and a buck‐boost converter. The LED driver has an advantage of long life because it does not contain any electrolytic capacitors. However, the issue with electrolytic capacitor‐less LED driver is that the ripple of the smoothed voltage becomes large due to insufficient capacitance of the smoothing capacitor. The proposed method, which uses the discontinuous current mode of a buck‐boost converter, reduces the output current ripple under such conditions. Experimental results using a 5.7?W LED driver prototype demonstrate that the proposed method reduces the output current ripple and that the percent flicker becomes 4.4%, which is smaller than the recommended upper limit of 8%. </abstract> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> <div class="translation abstracttxt"> <span class="zhankaihshouqi fivelineshidden" id="abstract"> <span>机译：</span><Abstract Type =“Main”XML：Lang =“en”> <标题类型=“main”>抽象</ title> >本文提出了由陶瓷电容输入整流器和降压升压转换器组成的LED驱动器。 LED驱动器具有长寿命的优势，因为它不包含任何电解电容器。然而，电解电容器的LED驱动器的问题是由于平滑电容器的电容不足，平滑电压的纹波变大。所提出的方法，使用降压升压转换器的不连续电流模式，在这种条件下降低了输出电流纹波。使用5.7×W LED驱动器原型的实验结果表明，该方法降低了输出电流纹波，闪烁百分比变为4.4％，小于推荐的上限为8％。</ p> </摘要> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> </div> <div class="record"> <h2 class="all_title" id="enpatent33" >著录项</h2> <ul> <li> <span class="lefttit">来源</span> <div style="width: 86%;vertical-align: text-top;display: inline-block;"> <a href='/journal-foreign-22399/'>《Electrical engineering in Japan》</a> <b style="margin: 0 2px;">|</b><span>2019年第4期</span><b style="margin: 0 2px;">|</b><span>共9页</span> </div> </li> <li> <div class="author"> <span class="lefttit">作者</span> <p id="fAuthorthree" class="threelineshidden zhankaihshouqi"> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Kadota Mitsuhiro&option=202" target="_blank" rel="nofollow">Kadota Mitsuhiro;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Shoji Hiroyuki&option=202" target="_blank" rel="nofollow">Shoji Hiroyuki;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Hatakeyama Atsushi&option=202" target="_blank" rel="nofollow">Hatakeyama Atsushi;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Wada Keiji&option=202" target="_blank" rel="nofollow">Wada Keiji;</a> </p> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zkzz" style="display: none;">展开▼</span> </div> </li> <li> <div style="display: flex;"> <span class="lefttit">作者单位</span> <div style="position: relative;margin-left: 3px;max-width: 639px;"> <div class="threelineshidden zhankaihshouqi" id="fOrgthree"> <p>HitachiLtd. Research &</p> <p>Development GroupHitachi Ibaraki Japan;</p> <p>HitachiLtd. Research &</p> <p>Development GroupHitachi Ibaraki Japan;</p> <p>Hitachi Global Life Solutions IncHitachi Ibaraki Japan;</p> <p>Tokyo Metropolitan UniversityHachioji Tokyo Japan;</p> </div> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zhdw" style="display: none;">展开▼</span> </div> </div> </li> <li > <span class="lefttit">收录信息</span> <span style="width: 86%;vertical-align: text-top;display: inline-block;"></span> </li> <li> <span class="lefttit">原文格式</span> <span>PDF</span> </li> <li> <span class="lefttit">正文语种</span> <span>eng</span> </li> <li> <span class="lefttit">中图分类</span> <span><a href="https://www.zhangqiaokeyan.com/clc/1782.html" title="输配电工程、电力网及电力系统">输配电工程、电力网及电力系统;</a></span> </li> <li class="antistop"> <span class="lefttit">关键词</span> <p style="width: 86%;vertical-align: text-top;"> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=buck‐boost converter&option=203" rel="nofollow">buck‐boost converter;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=ceramic capacitor&option=203" rel="nofollow">ceramic capacitor;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=discontinuous current mode&option=203" rel="nofollow">discontinuous current mode;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=electrolytic capacitor‐less&option=203" rel="nofollow">electrolytic capacitor‐less;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=LED driver&option=203" rel="nofollow">LED driver;</a> </p> <div class="translation"> 机译：降压 - 升压转换器;陶瓷电容器;不连续电流模式;电解电容器;LED驱动器; </div> </li> </ul> </div> </div> <div class="literature cardcommon"> <div class="similarity "> <h3 class="all_title" id="enpatent66">相似文献</h3> <div class="similaritytab clearfix"> <ul> <li class="active" >外文文献</li> <li >中文文献</li> <li >专利</li> </ul> </div> <div class="similarity_details"> <ul > <li> 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