LLC谐振变换器中平面集成磁件研究

针对开关电源向小型化、轻型化、薄型化方向发展的趋势，介绍了平面集成磁件的概念，研究了一种用于DC／DC变换器的LLC谐振变换器，在集成磁件通用模型的基础上分析了用于LLC谐振变换器的磁件集成，设计了一个集成磁件。为进一步减少集成磁件的高度和体积，又研究了平面集成磁件具体的设计方法，把该集成磁件转化成了平面集成磁件，进一步减小了磁件体积、质量和高度。同时，对转换前后的磁件做了电磁场仿真，结果表明转换前后磁件损耗也将减小。

Research on planar integrated magnetics element of LLC resonant convertor

Following the developing trend towards small, light and thin device on switching power supply at the present time, planar integrated magnetics concept is introduced. A LLC resonant convertor on DC/DC conversion is investigated, and an integrated magnetic structure is analyzed based on the general model. Furthermore, the method of designing planar integrated magnetics is derived which can be used to reduce volume further, weight and height of magnetics. Finally, by simulating, we get the result that the wastage of the core also decreases.