DRV8874-Q1: How to choose Cbulk?

Tool/software:

Hi Expert,

Have a nice day! I have question need your professional support:

About Cbulk, datasheet provides some advices about how to choose it.

My question is could you give some recommended value of this Bulk Capacitance based on the application scenario:

 VIN: 13.5-16V, Iout Max: 3.8A

Thanks!

Best Regards,

Leo Ma