ELECTRIC POWER SUPPLY APPARATUS AND VEHICLE

An electric power supply apparatus for a vehicle includes a second switch for performing ON/OFF switching of electric power supply from a second power supply to a second control unit, a third switch for performing ON/OFF switching of a first drive signal to the second switch, and a switch control circuit for outputting a second drive signal to the second switch when predetermined conditions are satisfied. The second switch is turned on when the first drive signal or the second drive signal is input, and the second switch is turned off when the first drive signal and the second drive signal are not input.