集成耦合磁路的新型电压调整模块(英文)

A Novel Voltage Regulator Module With Integrated Coupled Magnetic Path

多相交错型同步整流降压式变换器广泛地应用于微处理器电压调整模块设计中。为了提高变换器的稳态和动态性能,本文提出一种新型集成耦合磁路的非隔离式电压调整模块。文章利用等效磁路分析法定量地研究多个电感集成在一个磁芯中的自感量和互感量,通过调节集成磁芯气隙长度和耦合系数有效地优化电压调整模块的稳态特性和动态品质。Matlab仿真和两相并联样机实验研究表明,相比传统的电压调整模块,该新型磁集成电压调整模块可以有效地提高动态响应和变换器工作效率。

Multiphase interleaving synchronous buck converter is widely adopted for voltage Regulator module （VRM）, which requires strictly steady and dynamic performances to power microprocessor. In this paper, a non-isolated multiphase VRM with integrated coupled magnetic is introduced to improve steady and dynamic performances. All these magnetic components can be coupled into one single ferrite core shape to reduce the size. By properly designing the gap and coupling coefficient of integrated coupled-inductor, this novel technique can greatly improve the performances of VRM with faster transient response and higher efficiency. The Matlab simulation and prototype experimental results of two-phase VRM show that integrated coupled inductor can improve steady and dynamic performance compared with the conventional non-coupled VRM.