请问 在给dm6446供电时 TPS75003和TPS62040好像是同时产生了所需的电压 那么TPS3808是如果实现顺序上电的?
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你可以考虑用2个3808,一个去复位另一个。
也可以用电源的输出去控制另外一个电源的EN脚