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如图
按照图上的原理，输入16V，输出5V，当接上5欧负载时，电流为1A，电压也稳定在5V，但是将负载变大，要输出电流3A以上的电流，电压就被拉到2.6V，不能稳压到5V
先优化下电路参数吧
在sense电阻上加滤波电路，避免干扰信号进入cs和csg管脚
