SINGLE-STAGE ASYMMETRICAL LLC RESONANT CONVERTER DEVICE AND METHOD WITH LOW VOLTAGE STRESS ACROSS SWITCHING TRANSISTOR

Disclosed are a single-stage asymmetrical logic link control (LLC) resonant converter device having a low voltage stress across switching transistor, and a method for the same. The single-stage asymmetrical LLC resonant converter device includes a switching unit, which includes a power factor correction inductor for receiving current, a first switching transistor having a minus terminal connected with one terminal of the power factor correction inductor, a second switching transistor having a plus terminal connected with the minus terminal of the first switching transistor, a first bus capacitor having one terminal connected with a plus terminal of the first switching transistor, and a second bus capacitor having one terminal connected with a minus terminal of the second switching transistor and an opposite terminal connected with an opposite terminal of the first capacitor, and an instruction value control unit for generating a first instruction value used to control the first switching transistor based on a first duty ratio and generating a second instruction value used to control the second switching transistor based on a second duty ratio smaller than the first duty ratio.