电感及包含该电感之开关电路;INDUCTANCE AND SWITCH CIRCUIT INCLUDING THE INDUCTANCE

摘要

本案关于一种电感及包含该电感之开关电路。电感包括绕组及磁芯，磁芯包括至少一个心柱，更包括用于形成闭合磁路的至少一轭部，绕组绕在心柱上，至少一个心柱的至少一端部与至少一轭部之间设有间隙，间隙中设有平面磁芯单元，平面磁芯单元爲高磁导率低饱和磁感应强度材料，心柱和轭部爲高磁导率高饱和磁感应强度材料，且平面磁芯单元的材料的饱和磁感应强度低于心柱和轭部的材料的饱和磁感应强度。本发明之电感能提供非线性电感量，并可通过调节高磁导率低饱和材料的厚度和截面积改善非线性感量曲线，同时降低成本，减少线圈中的涡流损耗。;The disclosure relates to an inductance and a switch circuit including the inductance.The inductance includes a winding and a magnetic core.The magnetic core includes at least a heart-shaped post and at least a yoke portion, among which the yoke portion is used for forming a closed magnetic circuit.The winding is wound on the heart-shaped post.A gap is disposed between at least a portion of the heart-shaped post and the yoke portion.A planar magnetic core unit is disposed inside the gap, among which the planar magnetic core unit is made of a material with high magnetic permeability and low saturation magnetic induction, the heart-shaped post and the yoke portion are made of materials with high magnetic permeability and high saturation magnetic induction, and the saturation magnetic induction of the material of the planar magnetic core unit is less than the saturation magnetic inductions of the materials of the heart-shaped post and the yoke portion.The present invention achieves the advantages of providing non-linear inductance, improving the curve of the non-linear inductance through adjusting the thickness and the cross-sectional area of the material with high magnetic permeability and low saturation magnetic induction, reducing the costs and reducing the eddy current loss of the winding.