Parallel Resonant Power Supply Based on Chip UC3863
This paper analyses the characteristics of parallel LLC resonant converter, and makes the comparison of the characteristics of the order switch shunt and staggered parallel switch circumstances converter. The circuit uses UC3863 chip as the core control chip switch power supply, circuit adopts the half bridge structure. This model is seldom put forward through the experiments prove the feasibility and practicability of the LLC, and greatly improving the working efficiency. Using SABER simulation software for the converter circuit simulation and analysis with the theoretical calculation of the device parameters. Example of 300v voltage input, 12-18v output voltage, 2.5 KW, 500 KHZ parallel LLC resonant converter design and simulation for model analysis. Sum up the advantages of the parallel LLC resonant converter compared with the traditional LLC resonant converter .The results of simulation verify the feasibility of the design and the accuracy of the conclusion.