WEBENCH-POWER-DESIGNER: Difference in results of Switchpro and Webench

Part Number:WEBENCH-POWER-DESIGNER

Hi,

I am using TPS53355 for powering core voltage of keystone II soc ( 0.95V to 1.05V).

For implementing this, Switchpro suggests to use just four 100uF decaps at the output, but Webench suggests to use 22 ( 11 when temp is 30 deg. c).

Please find below images for more information.

Please let me know what might be the reason for this difference and which one can be considered for the design.

Regards,

Madhu.