Apparatus and method for controlling converter

A method for controlling a converter, the method comprising:

• detecting a load current of the converter, which comprises a bridge circuit;
• and
• switching a topology of the converter by controlling whether a resonant capacitor connected between first and second bridge arms constituting the bridge circuit, the switching being activated based on the detected load current of the converter, wherein the controlling comprises controlling whether the resonant capacitor is activated according to whether a detected load side current value of the converter is within a predetermined low current region or a predetermined high current region.

A method of controlling a converter comprising a plurality of switching elements arranged as a bridge circuit connected to an input terminal, the bridge circuit comprising a plurality of bridge arms, the method comprising:

• connecting a resonant capacitor to a midpoint between respective ones of the bridge arms;
• and
• switching a topology of the converter to a full-bridge type or a half-bridge type by controlling whether the resonant capacitor is activated based on a load current of the converter, wherein the controlling comprises controlling whether the resonant capacitor is activated according to whether a load current value of the converter is within a predetermined low current region or a predetermined high current region.