在3.3V输入,0.8V/20A输出的应用工况下,TI参考设计中buck1-4的输出电容均采用1210/47uF*3的配置,这是基于什么考虑留这么大的裕量的呢?因为若按单路5A输出电流来算的话,似乎单路22uF也能满足设计需求,在这种情况下,输出电容的容值是否可以优化至22uF*4呢?
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Hi
主要是基于输出负载瞬态变化下输出稳定的稳定(波动需要小于一定规格,一般是5%)