宽增益LLC谐振变换器研究现状及发展动态OA

LLC resonant converters are widely used in the field of DC/DC converters,featuring high efficien-cy,high power density,low EMI and input-output isolation.However,the relatively narrow voltage gain regula-tion range has always been its weak point.To address this issue,the recent research achievements in wide-gain de-signs of LLC resonant converters are summarized from the two aspects of circuit topology and modulation mode.And then,the future research hotspots for wide-gain LLC resonant converters are prospected.This paper provides a reference for designing wide-gain isolated power supplies with high efficiency and high power density.