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TPS65910A3给AM3354BZCZA100供电问题



我们产品用TPS65910A3给AM3354BZCZA100供电,之前一直好好的,近期的产品发现有10%左右的偶发供电后CPU起不来

已知:

电路设计参考335X的公版资料

失败时,量测到上电后VDD_MPU先是1.1V后,升高到1.5V

CPU设置的工作频率是1GHz(查3354datasheet对应MPU应该是1.325V),正常上电是MPU是先1.1V,后升到1.325V左右
有大佬知道怎么查吗?

感谢~~