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TPS55330 输出电压不正常

Other Parts Discussed in Thread: TPS55330

dear All,

    在使用TPS55330的时候出现输出不正常。当用抽载仪,抽载12V 0.75A ,输出就会掉到5v,不知道是触发到什么保护。附件是原理图原理图.docx

VIN=5V  VOUT=12V  IOUT=2A