US Patent 12113447 Apparatus and method for controlling converter

An embodiment apparatus includes a converter including a plurality of switching elements configured as a bridge circuit connected to an input terminal and having a plurality of bridge arms, wherein a topology of the converter is configured to be switchable to a full-bridge type topology or a half-bridge type topology, and wherein a resonant capacitor is connected to a midpoint between respective ones of the bridge arms, and a controller configured to switch the topology of the converter to the full-bridge type or the half-bridge type by controlling whether the resonant capacitor is activated based on a load current of the converter.