Power conversion apparatus for vehicle and Method for controling the same

Power conversion apparatus according to an embodiment of the present invention, an output circuit unit for the vehicle electric power conversion apparatus, generating an output power; A first controller for sensing the output power, and to a sensed output power compared with a reference value to perform the switching control for the generation of the boosted power supply; First-stage input unit for generating a step-up power supply receives the battery power in accordance with the switching control; A second stage for converting the boosted power supply input to another power source; And a converter for converting the other power for the output power; In that it comprises the features.