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如下图：输出电压4V/20A，负载是LED。CH1：输出电压，CH2：输出电流。不清楚为何电流输出不到5ms就自动拉低，且输出电压也被拉低了。后面出现了类似SS软起动的过程。
下面是原理图：
HI
如果负载是LED, 需要做恒流设计，而你电路提供给的是恒压设计。
建议你选用专门的LED driver芯片来做。
