A CONTROL METHOD OF DC-DC CONVERTER

摘要

The present invention relates to a DC-DC converter control method. The method includes: a step of rapidly charging a sub battery by outputting a constant current at the maximum current level through a voltage controller in a section between a discharge voltage and the minimum voltage; and a step of outputting constant power by generating a current command with a value made by dividing variable power, outputted from a normal voltage range of the sub battery in a section between the minimum voltage and the maximum voltage, by a measurement voltage sensed from an LDC output terminal. Therefore, the present invention is capable of reducing the burden of a power component by outputting an output voltage at the same power throughout the entire range regardless of a voltage command, and rapidly charging the sub battery through a constant current mode by limiting the maximum current.