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TPS54560B电源芯片在后端接行47uF电容后芯片烧毁,未接电容的时候正常

Other Parts Discussed in Thread: TPS54560B

我在做一个at标准的POE供电方案,52V转12V,2A输出,在验证的时候TPS54560B电源芯片在后端接行47uF电容后芯片烧毁,未接电容的时候正常,测量TPS54560B的引脚发现128三个引脚已经短路,设计方案是官方的参考方案,排查两天了没找出什么原因,电路图如下:MBOARD_D010_5.pdf