TPS40210: ISNS inception point

Part Number:TPS40210

Hi Expert,

I have check TPS40210 datasheet page25, there are a design example, the Spec shows the Iocp inception point minimum is 3.5A.

But in the EVM user guide, it's almost the same condition, but the the Iocp inception point minimum is 3.1A.

How do I determine the Iocp inception point minimum value? Thanks!