Design and implementation of half-bridge LLC resonant converter by L6599

LLC resonant converter is very suitable for high efficiency and high power density,becomes a typical representative of new resonant converters.The article briefly introduces the working principle and advantages of half bridge LLC resonant converter firstly,then calculates main parameters for the main circuit and control circuit,according to the parameters chooses power electronic components,finally develops and perfects a prototype.The prototype realizes the leakage inductance of the transformer acts as resonant inductance,which resonates with transformer magnetic inductance and resonant capacitance.The main switching tubes realize ZVS.The control circuit realizes one switching tube can bootstrap drive.The results prove the validity and feasibility of the article.The article lays a theoretical and experimental basis for follow-up study.