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[中科院创客空间] 要谈起开关电源的难点问题,PCB布板不算最大的难点

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elite449|  楼主 | 2021-3-19 22:27 | 显示全部楼层 |阅读模式

要谈起开关电源的难点问题,PCB布板不算最大的难点,但要布出精良的板一定是难点之一(PCB设计不好,可能导致怎么调试参数都调试布出来,这么说并非危言耸听)原因是PCB布板考虑的因素很多,比如:电气性能,安规要求,工艺路线,EMC影响等等;考虑的因素之中电气是最基本的,然而EMC又是最难摸透的,很多项目的进展瓶颈就在于EMC问题;进而立此帖给大家分享下PCB布板与EMC;
        当然离不开电路,电路的理解是布板的基础,电路的设计也是对EMC起到一定的预判作用;离开电路谈PCB布板等同忘本,离开PCB谈EMC也等同忘本,离开了PCB和EMC谈电路等于是离开现实的空中楼阁,三者紧密联系,只有系统讲解才能使三部分知识互相融合,融会贯通;
        我刚开始学电源,深感电源的知识面广,设计面临的问题很多,靠积累一个个问题需要很长时间;当时就希望能有系统讲解电路与PCB设计,还有EMC整改的知识,这是我当时作为新人的迫切需求,这里就希望能系统讲解这三个问题以及三者的紧密联系;因此该贴就是以电路为基础,系统讲解PCB布板与EMC整改,让一次的系统讲解,充分理解电路设计与PCB布板还有EMC,作为电源设计最重要的三个要素专题讲座,里面的每一个分享点都需要细细体会(其实每一个点都可以是一个话题和帖子,但我希望做出最有价值,最系统的知识体系大帖),结合实际应用去一步步感悟!
        主要内容:
        1.设计前的准备工作(包括电路的熟悉与理解,万事俱备免得推翻重来);
        2.布局过程中的思考(布局时会考虑哪些因素);
        3.走线的技巧(哪些是重要走线,走线要满足哪些要求);
        4.布板与EMC关系(结合布板谈EMC)
        5布板的细节与其它技巧;
        6.实例赏析及分析,还会涉及到一些其它的比如安规,工艺路线,结构等问题。。。
        7.EMC的形成机理,源头分析及理解;(结合电路特点分析,阐述EMC模型,以及其它EMC相关的知识分享)
        8.EMC整改的心得体会(全为自己切身体会感受,且为实验所验证,包含电路设计及PCB布板对其影响)尽可能做到学为己用,重点是弄透原理,而不是依葫芦画瓢。
          所叙内容均为切身体会,并非教科书式讲解,尽可能将自己心血都能展示出来,对我自己来说也算是很大的一个总结,已甚感欣慰,希望大家能体会到,并能有所共鸣;限本人水平有限,有不妥之处还请指正!此贴内容很难做到尽善尽美,但我相信一定是最走心的原创心得帖!
          大家自己有什么碰到的问题都可以留贴,可以给大家提供一些更具体的思路,带领大家如何学习布板与EMC;

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TT1000| | 2021-5-8 09:03 | 显示全部楼层
学习了

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cjseng| | 2021-6-4 17:42 | 显示全部楼层
我觉得变压器的计算才是难点

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linxi6414 2021-6-9 10:19 回复TA
有些芯片仿真软件,会根据你所用的芯片,以及你所给出的参数要求,自动帮你计算好变压器的参数来的。 
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