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您可以参考下面的文档
http://www.ti.com/lit/an/slaa497/slaa497.pdf
第8页 Table 1. First and Second Order Passive Low-Pass Filter Designs
滤波电路参考
楼主你好，你滤波出来是纹波太大，还是电压和预想的有偏差？
纹波太大可以参考楼上提供的滤波电路。
如果是电压和预想的有偏差是需要在软件上校准一下。
