LTM4637:Satbility in light load

Hi,

I checked Phase Margin (PM) using LTpowerCAD about LTM4637.

I loaded default solution in LTpowerCAD.

When Iout = 20 A, Phase + 180 deg is enough in all frequency.

When Iout = a few A, 

Iout = Aの場合、PM > 70 deg

However, Phase + 180 deg < 20 deg @ 2.5 kHz.

Is it stable when Iout = a few A ? 

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