用LM2596-adj作负电源稳压器时,应如何添加纹波滤波器( post ripple filter)?应选哪个点作为参考地?希望有图片解释。谢谢!
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您好,我想插入这个可选滤波器以降低纹波。正电源直接加在后面就行了,负电源是不是应该把电感放到-5V输出?
另外负电源应该如何接地呢?手册上的原话是“
The
circuit operates by bootstrapping the regulator's ground pin to the negative output voltage, then grounding the
feedback pin, the regulator senses the inverted output voltage and regulates it.”
可调版本作负电源以feedback pin接地的话感觉不太可能。