POWER SUPPLY APPARATUS OF VEHICLE

摘要

A power supply apparatus of a vehicle includes a battery (150), a voltage step-up converter (200) stepping up a voltage of the battery (150) and supplying the stepped-up voltage to an electrical load of the vehicle, and a control device (500) controlling the voltage step-up converter (200) in a continuous voltage step-up mode in which the voltage step-up converter (200) is continuously operated and an intermittent voltage step-up mode in which the voltage step-up converter (200) is intermittently operated. When the temperature of the battery (150) is equal to or lower than a predetermined value, the control device (500) inhibits the voltage step-up converter (200) from operating in the intermittent voltage step-up mode.