Power apparatus for vehicle

A power apparatus for a vehicle, comprising:

• a regulator configured to regulate a battery voltage inputted through a power input node connected to a battery of the vehicle;
• a switch driving circuit configured to turn on/off a switch that controls a connection between the battery and the regulator through the power input node, an operation of the switch driving circuit being controlled by the power apparatus when a power-up signal is initially applied;
• and
• a main logic circuit configured to receive control authority for the switch driving circuit from the power apparatus when receiving the power-up signal and an operating voltage generated by the regulator, and to control the switch driving circuit to control an on/off operation of the switch,
• wherein the power apparatus is configured to determine a power-up method on the basis of an input voltage when the power-up signal is initially applied, and to allow a subsequent power-up operation to be performed according to the determined power-up method.