线圈参数对一体成型电感损耗性能的影响  

Influence of coil parameters on the losses of molded inductors

作　　者：周瑞霖 周章桥 王韬[1] 聂彦[1] 王鲜[1] ZHOU Ruilin;ZHOU Zhangqiao;WANG Tao;NIE Yan;WANG Xian(School of Integrated Circuits,Huazhong University of Science and Technology,Wuhan 430074,Hubei,China)

机构地区：[1]华中科技大学集成电路学院,湖北武汉430074

出　　处：《金属功能材料》2024年第3期1-6,共6页Metallic Functional Materials

基　　金：湖北省重点研发计划项目(2022BAA022)。

摘　　要：电感的损耗性能是其高频应用的关键指标之一,本文针对三种线圈参数一体成型电感具体分析了电感内部磁场强度和电流密度分布特点,探究了线圈参数对电感的磁心损耗和线圈损耗影响规律。电感几何尺寸为6.6 mm×6.6 mm×2.8 mm,三种线圈参数分别为匝数(N)=12、线圈直径(D)=2.5 mm(简写为N12D25),N=10、D=3 mm(N10D30),以及N=8、D=4 mm(N8D40)。结果表明:在感值相当条件下,适当增大线圈直径可以减少所需匝数,提高电感内部磁场分布的均匀性、并减小绕组的交流电阻,从而同时降低电感的磁心损耗和线圈损耗。The power loss of inductors is crucial for their high-frequency applications. The distribution characteristics of magnetic intensity and current density in the molded inductors with three types of coil parameters were analyzed, and then the influences of the coil parameters on their core loss and coil loss were investigated in detail. The dimensions of the inductors are 6.6 mm × 6.6 mm × 2.8 mm, and three types of coil parameters are as follows: number of turns(N) = 12 and coil diameter(D) = 2.5 mm(abbreviated as N12D25), N=10 and D=3 mm(N10D30), N=8 and D=4 mm(N8D40), respectively. The results indicate that a larger coil diameter can reduce the required number of turns when the inductance value is comparable. Moreover, this operation can improve the uniformity of magnetic field distribution in the inductor, and decrease the AC resistance of the coils, thereby simultaneously reduce the magnetic core loss and coil loss of the inductor.

关 键 词：一体成型电感 线圈参数 磁场强度 电流密度 损耗 

分 类 号：TM55[电气工程—电器]