학술논문
Thin Film Magnetic Core Microinductor With Stacked Windings
Document Type
Periodical
Source
IEEE Transactions on Electron Devices IEEE Trans. Electron Devices Electron Devices, IEEE Transactions on. 68(9):4237-4241 Sep, 2021
Subject
Language
ISSN
0018-9383
1557-9646
1557-9646
Abstract
In this work a stacked winding thin film magnetic core microinductor is proposed to improve the ratio of inductance to dc resistance (DCR). This article also describes an improved ac winding loss model accounting for the asymmetric 2-D magnetic fields present within the device. Two six-turn single layer and stacked winding devices are fabricated, and small signal measurements are presented with dc inductance of 150 nH and DCR of $0.35~\Omega $ for the stacked winding inductor, and with DCR of $0.47~\Omega $ for the single winding inductor. In this case, the total DCR of stacked winding inductor is reduced by approximately 25% compared with the corresponding single layer structure with an equivalent inductance and device area.