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tps5312无基准电压输出!

Other Parts Discussed in Thread: TPS51312

第一次使用这个芯片,根据数据手册绘制原理图的,唯一不同的是第4脚PGOOD没有接上拉电阻,这个管脚为电源指示输出,问下一定要接上拉吗!EN管脚使用MCU控制,高电平为3.3V。

上面我电路图,还有电容用的都是47uF钽电容,现在是无06V基准输出!