开关电源、EMI滤波器、共模电感器及其绕线的方法;SWITCHING POWER SUPPLY, EMI FILTER, COMMON MODE INDUCTOR AND WINDING METHOD THEREOF

摘要

本发明公开了一种开关电源、EMI滤波器、共模电感器及其绕线的方法。该共模电感器绕线包括：一磁芯；两个多层线圈绕组，对称绕制在磁芯上；以及，两个隔离间隙，分别形成在每个多层线圈绕组中；每一隔离间隙用于将一多层线圈绕组从第一层开始分隔为两个绕线区域。相比于现有技术中，本公开可以在很大程度上提高共模电感器的EMI噪声抑制能力。;The disclosure relates to a switching power supply, an EMI filter, a common mode inductor and a winding method thereof. The common mode inductor includes a magnetic core, two multilayer windings symmetrically wound on the magnetic core, and two isolating gaps, each of which is formed on each of the two multilayer windings. Each isolating gap is used for isolating a first layer from the rest layer of a multilayer winding so as to form two winding areas. Compared with the prior art, the present invention achieves the advantage of significantly enhancing the EMI noise-suppressing performance of the common mode inductor.