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TPS23753A外接adapter 9~12V问题

Other Parts Discussed in Thread: TPS23753A

目前使用TPS23753A,可额外接adapter,电压范围为9〜12V。

我用EVM实验,将adapter电压透过分压的方式给ADP pin。

电压在9V的时候,ADP pin> 1.5V,但是Vout = 0V。

当电压上升到10V,ADP pin> 1.5V,Vout = 3.3V。

ADP pin的电压有大于规格书的规格1.5V,但不知道为什么输出没有电压。

不知道哪边设定有误,麻烦再帮忙确认。

谢谢。

EVM: www.ti.com/.../slvu314f.pdf