POWER SUPPLY APPARATUS AND A VEHICLE COMPRISING THE SAME

A power supply apparatus includes: a first battery configured to supply power; a first converter configured to step down a voltage output from the first battery to a first voltage; a second converter configured to step down the voltage output from the first battery to a second voltage lower than the first voltage; a third converter configured to convert the first voltage into the second voltage; a fourth converter configured to convert the second voltage into the first voltage; a first controller configured to supply the first voltage output from the first converter to at least one of a first load or the third converter; and a second controller configured to supply the second voltage output from the second converter to at least one of a second load or the fourth converter.