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TPS51218: CPU disabled due to voltage drop issue

Part Number: TPS51218

Dear support team,

This is FAE Dave supporting ECS, and it's my customer of ODM Taiwan.

They utilize TPS51218 as the second source substituting RT8237E(P2P) as the schematic shown below.

There is an unexpected voltage drop appears at output as the figure.

The waveform below shows PWRGD, VCCIO_12, Hi Mos Gate, Low Mos Gate.

It seems like that the PWRGD drops first and then others drop.

Could you please kindly help us with this question?

Thanks and best regards,