6232.PD TPS23753A.pdf请问我的TPS23753——POE供电方案,接网线后48V输入出现周期性短路,L1电感也出现周期性啸叫,12V电压输出不正常。本人发现只要拿热风枪对TPS23753芯片加热一下,每次就能启动正常(48V输入没有短路,L1电感也没啸叫,12V电压输出正常)。请各位大佬帮帮小弟看看这是什么问题,十分感谢!
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6232.PD TPS23753A.pdf请问我的TPS23753——POE供电方案,接网线后48V输入出现周期性短路,L1电感也出现周期性啸叫,12V电压输出不正常。本人发现只要拿热风枪对TPS23753芯片加热一下,每次就能启动正常(48V输入没有短路,L1电感也没啸叫,12V电压输出正常)。请各位大佬帮帮小弟看看这是什么问题,十分感谢!