Vehicle power control device and method

A vehicle power control device, comprising:

• a closed loop buck-boost converter supplied with power from a power source and outputting the power to a load;
• at least one open loop converter connected to the closed loop buck-boost converter in parallel and supplied with the power from the power source and outputting the power to the load;
• and
• a controller controlling an operation of the closed loop buck-boost converter and an operation of the at least one open loop converter, respectively, depending on power capacity required for the load,
• wherein the controller controls the at least one open loop converter to be maintained in an operating state.

A vehicle power control device, comprising:

• a closed loop buck-boost converter supplied with power from a power source and outputting the power to a load;
• at least one open loop converter connected to the closed loop buck-boost converter in parallel and supplied with the power from the power source and outputting the power to the load;
• and
• a controller controlling an operation of the closed loop buck-boost converter and an operation of the at least one open loop converter, respectively, depending on power capacity required for the load.