LLC諧振變換器中平面集成磁件的研究

摘要：本文針對目前開關電源向小型化、輕型化、薄型化方向發展的趨勢，介紹了平面集成磁件的概念，研究了一種用于DC/DC變換器的LLC諧振變換器，在集成磁件通用模型的基礎上分析了用于LLC諧振變換器的磁件集成，并設計了一個集成磁件。為了進一步減少集成磁件的高度和體積，本文又研究了平面集成磁件具體的設計方法，把該集成磁件轉化成了平面集成磁件，并對轉換前后的磁件做了電磁場仿真，結果表明轉換前后磁件損耗也將減小。這樣，就達到了進一步減小磁件體積、重量和高度的目的。 敘詞：LLC諧振變換器 集成磁件 平面變壓器 平面集成磁件 Abstract： Following the developing trend towards small, light and thin device on switching power supply at the present time, planar integrated magnetics concept is introduced in this thesis. A LLC resonant convertor on DC/DC conversion is investigated, and a 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 farther volume, weight and height of magnetics. Finally, by simulating, the result is that the wastage of the core also decreases. So the purpose reducing volume, weight and height is achieved. Keyword：LLC resonant convertor Integrated magnetics Planar transformer Planar integrated magnetics.