A low-loss inductor structure and design guidelines for high-frequency applications
Name
Yang APEC18 HF Inductor final.pdf
Description
Accepted version
Size
244.01 KB
Format
Adobe PDF
Checksum (MD5)
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Author(s)
Yang, Rachel S.(Rachel Shanting)
Hanson, Alex Jordan
Perreault, David J.
Sullivan, Charles R.
Date Issued
April 2018
Journal
2018 IEEE Applied Power Electronics Conference and Exposition (APEC)
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Citation
Yang, Rachel S. et al. "A low-loss inductor structure and design guidelines for high-frequency applications." 2018 IEEE Applied Power Electronics Conference and Exposition (APEC), March 2018, San Antonio, Texas, USA, Institute of Electrical and Electronics Engineers (IEEE), April 2018 © 2018 IEEE
Version
Author's final manuscript
Abstract
Operation in the HF regime (3-30 MHz) has shown potential for miniaturizing power electronics, but substantial challenges in the design of efficient miniaturized inductors at HF remain. At these frequencies, losses due to skin and proximity effects are difficult to reduce, and gaps needed to keep B fields low in the core add fringing field loss. We propose a low-loss inductor structure suitable for small, highly efficient inductors at HF and introduce step-by-step design guidelines for the geometry. An example ∼ 15 μΗ inductor designed using these guidelines achieved an experimental quality factor of 620 at 3 MHz and 2 A (peak) of ac current. We further demonstrate the low loss of the inductor in a high-current-swing power converter operated at 1-3 MHz; at 250 W, the inductor improved converter efficiency by 1.2 %, compared to a conventional inductor design. Thus, we show that the proposed inductor geometry and design guidelines can reduce losses and thereby help realize high frequency miniaturization of power electronics.
MIT Department
Massachusetts Institute of Technology. Research Laboratory of Electronics
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Terms of Use
Creative Commons Attribution-Noncommercial-Share Alike
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DOI of Published Version
https://doi.org/10.1109/apec.2018.8341070
