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| ■論文No. |
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| ■ページ数 |
8ページ |
■発行日
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2024/06/01 |
| ■タイトル |
Fabrication of Fe-based Nanocrystalline Spherical and Flake Powder Composite Magnetic Cores for Tens of MHz and their Application to Planar Power Inductor |
| ■タイトル(英語) |
Fabrication of Fe-based Nanocrystalline Spherical and Flake Powder Composite Magnetic Cores for Tens of MHz and their Application to Planar Power Inductor |
| ■著者名 |
Soichi Kimura (Department of Electrical and Computer Engineering, Faculty of Engineering, Shinshu University), Kota Koike (Department of Electrical and Computer Engineering, Faculty of Engineering, Shinshu University), Motohiro Kanai (Department of Electrical and Computer Engineering, Faculty of Engineering, Shinshu University), Ryohei Miyata (Department of Electrical and Computer Engineering, Faculty of Engineering, Shinshu University), Toshitaka Minamisawa (Department of Electrical and Computer Engineering, Faculty of Engineering, Shinshu University), Kousuke Miyaji (Department of Electrical and Computer Engineering, Faculty of Engineering, Shinshu University), Makoto Sonehara (Department of Electrical and Computer Engineering, Faculty of Engineering, Shinshu University), Toshiro Sato (Department of Electrical and Computer Engineering, Faculty of Engineering, Shinshu University) |
| ■著者名(英語) |
Soichi Kimura (Department of Electrical and Computer Engineering, Faculty of Engineering, Shinshu University), Kota Koike (Department of Electrical and Computer Engineering, Faculty of Engineering, Shinshu University), Motohiro Kanai (Department of Electrical and Computer Engineering, Faculty of Engineering, Shinshu University), Ryohei Miyata (Department of Electrical and Computer Engineering, Faculty of Engineering, Shinshu University), Toshitaka Minamisawa (Department of Electrical and Computer Engineering, Faculty of Engineering, Shinshu University), Kousuke Miyaji (Department of Electrical and Computer Engineering, Faculty of Engineering, Shinshu University), Makoto Sonehara (Department of Electrical and Computer Engineering, Faculty of Engineering, Shinshu University), Toshiro Sato (Department of Electrical and Computer Engineering, Faculty of Engineering, Shinshu University) |
| ■価格 |
会員 ¥550 一般 ¥770 |
| ■書籍種類 |
論文誌(論文単位) |
| ■グループ名 |
【A】基礎・材料・共通部門 |
| ■本誌 |
電気学会論文誌A（基礎・材料・共通部門誌） Vol.144 No.6 （2024） 特集：磁性材料の高周波特性活用技術動向と展望
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| ■本誌掲載ページ |
199-206ページ |
| ■原稿種別 |
論文／英語 |
| ■電子版へのリンク |
https://www.jstage.jst.go.jp/article/ieejfms/144/6/144_199/_article/-char/ja/
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| ■キーワード |
Fe-based nanocrystalline alloy，composite magnetic core，planar power inductor，beyond 10MHz，DC-DC converter |
| ■要約(日本語) |
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| ■要約(英語) |
Two types of Fe-based nanocrystalline powder composite magnetic core for tens of MHz were fabricated and applied to the planar power inductor. One was Fe-Si-B-Nb-Cu-C spherical fine powder composite magnetic core for a closed magnetic circuit in the planar power inductor, which exhibited a relative permeability of 10 and loss factor tand of 0.004 at 10MHz. The other one was Fe-Si-B-Nb-Cu flake powder composite magnetic core for shielding the leakage magnetic flux from low permeability closed magnetic circuit, which exhibited a relative permeability of 150 and loss factor of 0.19 at 10MHz. The planar power inductor, with Fe-based nanocrystalline spherical fine powder composite magnetic core and flake powder composite magnetic core, had 4.8×3.2×1.84 mm in size, inductance of about 240nH, Q-factor of about 40 at 10MHz. The fabricated planar power inductor was implemented into a 24V input, 12MHz switching GaN-FET two-phase buck converter, and the converter exhibited efficiencies of 81% when 5V-3A output and 92% when 12V-2.5A output. |
| ■版 型 |
A4 |
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