平面VRM新型阵列结构高频磁集成研究

Research on High Frequency Integrated Magnetic of Array Structure for Planer VRM

高频磁集成电压调理模块(VRM)的集成电感直接影响其稳态特征、效率和输出特性。以改善变换器高频特性、消除直流偏磁和对称化为研究目标,提出一种基于单元耦合磁芯及其柔性组合概念的新型矩阵式对称化高频集成电感。通过逆向推演拓扑复用原理,等效切割传统耦合电感磁芯及绕组,采用物理磁场和电气场、路相结合并融合磁路-电路等效对偶变换模型的多尺度分析方法,探究集成磁件可消除直流偏磁、可自由调节耦合度、可任意拓展集成相数的机理,推导出集成磁件高频对称化设计准则。最后设计两相和四相样机进行实验,证明该矩阵结构集成电感理论分析的正确性和应用于高频VRM的输出特性优势。

In order to improve the high frequency characteristics of voltage regulator module （VRM） and eliminate DC bias ,a novel matrix symmetrical integrated inductor is proposed.Through the topology deduction multiplexing princi- ple, equivalent cutting traditional coupling inductance, magnetic field and electric field, the physical way of combina- tion, and fusion of multi scale magnetic circuit-equivalent circuit of dual transformation model analysis method, the mechanism of integrated magnetic DC bias that can eliminate, freely adjust the coupling degree and expand the num- ber of phase integration is explored, integrated magnetic high frequency symmetrical design criterion is derived.Final- ly, two phase and four phase prototype experiments are designed to demonstrate the correctness and advantages of the integrated inductor theory analysis.