阵列式集成电感四相VRM的研究

Study of array integrated inductor in four-phase voltage regulator module

为了提高VRM的输出动态响应和降低稳态纹波,提出了一种用于四相VRM的阵列式集成电感。在不考虑漏磁通影响的情况下,分析阵列式集成电感参数对VRM性能的影响;建立了磁件的等效电路,对阵列式集成电感与分立电感四相VRM进行电路仿真比较,仿真结果验证了理论分析的正确性。试验结果表明阵列式集成电感四相VRM动态响应性能较好。

In order to increase the dynamic response performance and decrease the steady current ripple of VRM,an array magnetic core structure was formed by multiple separation magnetic core＇s combination. Making use of the array magnetic core an array integrated inductor is put forward,which is applied to the four-phase VRM. Without considering the effect of leakage magnetic flux,the effect of the array integrated inductor＇s parameters for VRM＇s performance is analyzed,and the equivalent circuit of the array integrated inductor is established. Based on the equivalent circuit and making use of circuit simulation software,the performance of four-phase array integrated inductor VRM is analyzed. At the same time,making use of circuit simulation software the performances between the four-phase array integrated inductor VRM and the four-phase discrete inductor VRM are compared. The simulation results showed the correctness of the analysis. And the experimental results showed that the array integrated inductor VRM has predominance dynamic response performance.