电感器
电磁线圈
电磁干扰
交错
电磁干扰
印刷电路板
电气工程
噪音(视频)
谐振器耦合系数
电感
功率(物理)
电子工程
拓扑(电路)
工程类
物理
计算机科学
电压
图像(数学)
谐振器
人工智能
量子力学
作者
Shuo Wang,Phu Hieu Pham,Qiang Li,Xingyu Chen
标识
DOI:10.1109/apec43580.2023.10131526
摘要
Magnetics with embedded windings in printed circuit board (PCB) reduces labors in power-supply manufacturing and enables implementation of advanced electromagnetic interference (EMI) suppression techniques. However, planar inductors with embedded PCB windings could potentially suffer higher winding loss due to the accumulation of magnetomotive force (MMF) and the skin effect, compared to conventional litz wire-based designs. One approach to reduce winding loss is to interleave windings of different phases in a form of coupled inductor. In this way, however, the available coupling coefficient is usually constrained to a certain high level that limited by the specific winding structure. This paper proposes a winding interleaving approach that extends the lower limit of coupling coefficient to zero while still maintaining the benefits of winding interleaving. Furthermore, balance technique is integrated with PCB winding-based inductors for common-mode (CM) noise suppression. A 2.2 kW GaN-device based totem-pole power-factor correction (PFC) converter is demonstrated as an example. The proposed PCB-based inductor structure enables a peak efficiency of 99% and a $20 \ \mathbf{dB}\mu\mathrm{V}$ CM noise suppression in experiment.
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