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</script> <script type="text/javascript"> var OBJ_TITLE = "开关电源变压器如何布线"; var OBJ_ID = "600"; var MARK = "news"; var ARR_AD_MARK = ["news_detail_1", "news_detail_2", "news_detail_3"]; var SID = "0001,0002,0006"; //权限ID var AUTHORITY_ID = ""; </script> <script src="/JS/Cls_jsPage.js"></script> <!--content:start--> <div class="content"> <div class="plc2"> 当前位置?a href="/">首页</a> » <a href="/news/">资讯中心</a> » <a href="/News/News-0001,0002,0006.shtml"> 晨飞资讯</a> » <a href="">开关电源变压器如何布线</a></div> <div class="list4nr"> <div class="n_info_con" id="printableview"> <h3> 开关电源变压器如何布线</h3> <div class="info_con_tit"> <div class="info_con_tit"> <div class="n_tit"> <span>文章出处?a href=""><a href="http://cfdz.nsw888.com">深圳市晨飞电子有限公?/a></a></span><span>网责任编辑:<a href="http://cfdz.nsw888.com">NSW</a></span><span>作者:<a href="http://cfdz.nsw888.com">NSW</a></span><span>人气?span id="cntrHits">-</span></span><span>发表时间?016-09-13 14:07:00</span> <div class="newchang"> <!-- JiaThis Button BEGIN --> <div id="ckepop"> <a href="http://www.jiathis.com/share/?uid=899792" class="jiathis jiathis_txt jtico jtico_jiathis" target="_blank">分享到:</a> <a class="jiathis_button_qzone">QQ空间</a> <a class="jiathis_button_tsina"> 新浪微博</a> <a class="jiathis_button_tqq">腾讯微博</a> <a class="jiathis_button_tsohu">搜狐微博</a> <a class="jiathis_button_t163">网易微博</a> <a class="jiathis_button_tools_1"></a><a class="jiathis_button_tools_2"></a> </div> <script type="text/javascript"> var jiathis_config = { "data_track_clickback": true };</script> <script type="text/javascript" src="http://v2.jiathis.com/code/jia.js?uid=899792" charset="utf-8"></script> <!-- JiaThis Button END --> </div> </div> </div> </div> <div id="cntrBody"> <p><a href="http://www.chenfeipower.com/"><strong>开关电源变压器</strong></a>中包含有高频信号,PCB上任何印制线都可以起到天线的作用,印制线的长度和宽度会影响其阻抗和感抗, 从而影响频率响应。即使是通过直流信号的印制线也会从邻近的印制线耦合到射频信号并造成电路问题(甚至再次辐射出干扰信号)。因此应将所有通过交流电流的印制线设计得尽可能短而宽,这意味着必须将所有连接到印制线和连接到其他电源线的元器件放置得很近?br /> <br />     印制线的长度与其表现出的电感量和阻抗成正比,而宽度则与印制线的电感量和阻抗成反比。长度反映出印制线响应的波长?长度越长?印制线能发送和接收电磁波的频率越低?它就能辐射出更多的射频能量。根据印制线路板电流的大小, 尽量加租电源线宽度, 减少环路电阻。同时、使电源线、地线的走向和电流的方向一致, 这样有助于增强抗噪声能力?br /> <br /> 接地是开关电源四个电流回路的底层支路?作为电路的公共参考点起着很重要的作用?它是控制干扰的重要方法?br />     因此,在布局中应仔细考虑接地线的放置,将各种接地混合会造成电源工作不稳定?br />    进行全局布线的时候, 还须遵循以下原则?br />     ? )布线方向: 从焊接面看, 元件的排列方位尽可能保持与原理图相一致,布线方向最好与电路图走线方向相一致, 因生产过程中通常需要在焊接面进行各种参数的检测,故这样做便于生产中的检查,调试及检修(注:指在满足电路性能及整机安装与面板布局要求的前提下)?br />     ? )设计布线图时走线尽量少拐弯?印刷弧上的线宽不要突变, 导线拐角?ge;90度, 力求线条简单明了?br />     ? )印刷电路中不允许有交叉电路?对于可能交叉的线条, 可以?ldquo;?rdquo;?ldquo;?rdquo;两种办法解决。即让某引线从别的电阻、电容、三极管脚下的空隙处“?rdquo;过去?或从可能交叉的某条引线的一?ldquo;?rdquo;过去?在特殊情况下如何电路很复杂, 为简化设计也允许用导线跨接, 解决交叉电路问题。因采用单面板, 直插元件位于to p 面,表贴器件位于bottom 面,所以在布局的时候直插器件可与表贴器件交叠, 但要避免焊盘重叠?br /> <br /> <br /> 以上就是为大家总结的关于如何对开关电源变压器如何布线,布线应该遵循的原则的介绍,希望可以帮到大家,如果还想了解更多的高频变压器的内容,那就点击高频变压器资讯吧?/p> </div> <div class="apage" id="showfenye"> <!--资讯分页:start--> <script type="text/javascript"> var pagecont=1; 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