LM5180-Q1: How was 1.5A current spec evaluated?

Hello team,

It seems that LM5180-Q1 guarantee 1.5A current limit.

How was this spec evaluated and how long TI guarantee this current?

For example,

1.5A sinusoidal current for 60s

continuous 1.5A current for long time

10us 1.5A peak current based on IEC XXX etc..

Thanks a lot.

Regards,

Oliver Kim