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【求助】TPS2592AA输出不正确



直流12V/2A输入,后级连接不断开,EN为3.9V左右,VCC_IN只有3.7V左右

直流12V/2A输入,后级的连接全部断开,EN 为6.1V左右,VCC_IN只有6V

片子也换过了,能检查的都检查了,实在查不出哪的问题,求问?

太奇怪了。。