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TPS65094: TPS650940A0RSK

Part Number: TPS65094
Other Parts Discussed in Thread: TPS650864

     你(们)好
我将您的 TPS650940A0RSK 用于 Intel Apollo Lake 设计。 我们生产了10块板、其中一个板出现进系统掉电问题。 它似乎是1.8V 输出(BUCK4)上的掉电导致 PMIC 无输出。 

以下屏幕截图显示了 BUCK4输出电压和 LDO5V:

下图显示了原理图和布局:

请问您能给我一些关于如何解决问题的想法吗?