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tps61222 Simplified Schematic为什么会出现电源地地与大地

Other Parts Discussed in Thread: TPS61222

tps61222  Simplified Schematic出现电源地地与大地,是想说明什么问题还是要怎么做电源比较稳定

tps61222.pdf
  • 功率地和模拟地,DC/DC都要尽可能做到单点接地(一般都是在IC的GND脚那儿连接),否则容易出现不稳定、输出电压准等情况。

    通常参考规格书就可以了,TPS61222的最后有layout示例,FB电阻对应的模拟地和输入、输出电容的功率地就是最后在IC的GND脚那儿连在一起的,是个不错的例子。