TI 公司之Lm系列电源芯片布线指导

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TI 公司之Lm系列电源芯片布线指导 [复制链接]

TI 公司之Lm系列电源芯片布线指导

1.Both the designer and the CADperson need to be aware that the design of a switching power converter is onlyas good as its layout

设计者和CAD布局者都要明白：开关转换器的设计仅仅是布局良好的一方面。

2. The overall subject of PCB design is an extremely wide one,embracingseveral test/mechanical/production issues and also in some casescompliance/regulatory issues. There is also a certain amountof physics/electromagnetics involved,

PCB设计的总体具体是一个非常广泛，包括几个测试/机械/生产问题，并在某些情况下遵守/管理问题。也有涉及到一些物理学和电磁学的问题。

3. we have provided recommended starting points for layout when usingthe popular LM267x,LM259x and LM257x families (Figure 2) The focus is on thestep-down (Buck) Simple Switcher ICs from National, but the same principleshold for any topology and switching power application

我们对布局提供建议的出发点是使用比较流行的LM267x、LM259x和LM257x系列，主要集中在降压（Buck）简单开关电源转换芯片，但是同样的原则在其它的任何拓补结构和开关电源应用中依然适用。

4. In switching regulator layout, it is the AC paths that areconsidered critical, whereas the DC paths are not. That is the only basic ruleto be kept in mind, and from which all the others follow. This is also true forany topology。

在开关稳压器的布局中，考虑交流路径是非常必要的，而直流路径则显得不是很重要，这是唯一值得牢牢记住的基本原则，并且，同其它
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