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TPS65912: TPS659122YFFR SMT贴片后成品烧录异常

Part Number: TPS65912

TPS659122YFFR  350  T04725397 

SMT贴片后成品烧录异常49pcs,现分析到的是主要集中在U401的PMIC芯片排查了焊接无异常,
同时做了1片U401的良品和不良品交叉验证,烧录不良会随物料更换而转移,请帮看下什么原因?谢谢