For a project of mine the user is allowed to use either a 12V or 24V power adapter. Than I need to regulate the voltage if it's at 24V down to 12V. First I thought about using a normal Buck with NFET but It would be complicated to design it to stop/bypassing it if my input voltage is 12V.
Now I tried to use the LM25085. With the basic settings from 14-24Vin-> 12Vout with ~6A I get about about 0.1V+- (as seen in the picture) which is okay but I would like to make it smoother if possible.
But as you can see if I choose 12Vin I get about -0.3V which is way to low. Is there a way to improve this ?