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TPS54426: Delay when Power Good goes Low

Part Number: TPS54426
Other Parts Discussed in Thread: TPS54326

Hello.

The following description is in the "Power Good" section of page-8 of SLVSAD6C (TPS54426).

"If the feedback voltage goes under 15% of the target value,
the power good signal becomes low after a 5us internal delay."

The following description is in the "Power Good" section of page-7 of SLVSA13E (TPS54326).

"If the feedback voltage goes under 15% of the target value,
the power good signal becomes low after a 10ms internal delay."

Please teach me why the delay value is greatly different like 5us and 10ms.

Regards,
Dice-K