TMS320F280025C: PFC AC input jump problem

Hi Team,

Here's an issue from the customer may need your help:

Using F280025C to drive bridged PFC. When the AC input is 85V, the control is normal, and when the AC input is 220V, the control is also normal.

But if AC85V suddenly jumps to 220V, it is abnormal. Is there any way to deal with dynamic drops and jumps of AC input?

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Thanks & Regards