Around two years ago I had my first look into the schematics of the MPPT-1210-HUS, but since then could never understand the functionality of Q2.
Just today when I checked the schematics of the MPPT-2420-HC I saw the note:
“Reverse polarity protection and PV reverse current blocking”, here Q3.
But I still don’t understand why the gate of this FET is conncted to LS_DRV. Could anyone help me out here?