Choi Sihoon

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自己紹介/Self Introduction

Sihoon Choi received his B.S. degree in energy systems engineering from Chung-Ang University, Seoul, South Korea, in 2019, and M.S. and Ph.D. degrees in electrical engineering from Nagoya University, Nagoya, Japan in 2022 and 2025, respectively.
He was an Associate Research Engineer with Automotive Power Development Team, LG Innotek, Seoul, South Korea, from 2019 to 2020.
Since 2025, he has been a Designated Assistant Professor at Nagoya University in Institute of Materials and Systems for Sustainability (IMaSS).

研究内容/RESEARCH CONTENT

  • ・Analog and digital control
  • ・Passive components
  • ・Power electronics packaging
  • ・Power module packaging

論文/PUBLICATION

Journal paper

[1] “Derivation of Resonant Period for Soft Switching Considering Nonlinear Characteristics of Output Capacitance in Switching Device”,

Sihoon Choi, Ayato Suzuki, Jun Imaoka, and Masayoshi Yamamoto, IEEJ Journal of Industry Applications, vol. 12, no. 3, pp. 289-294, May 2023.


[2] “Voltage-Controlled Variable Inductor for Fixed-Frequency Critical Conduction Mode Operation”,

Sihoon Choi, Jong-Won Shin, Jun Imaoka, and Masayoshi Yamamoto, IEEE Transactions on Industrial Electronics, vol. 70, no. 6, pp. 5707-5716, June 2023.


[3] “Design of Coupled Inductor Using Powder Core with Concentrated Air Gap in Multiphase Operation”,

Sihoon Choi, Jun Imaoka, and Masayoshi Yamamoto, IEEE Transactions on Industry Applications, vol. 60, no. 2, pp. 3449-3458, March-April 2024.


[4] “Power Module with Low Common-Mode Noise and High Reliability”,

Sihoon Choi, Jiyoon Choi, Thiyu Warnakulasooriya, Jong-Won Shin, Jun Imaoka, and Masayoshi Yamamoto IEEE Access, vol. 12, pp. 90929-90939, 2024.


[5] “Improved Packaging of Power Module with Low-Permittivity Material for Low Common-Mode Noise and High Reliability”,

Sihoon Choi, Jiyoon Choi, Thiyu Warnakulasooriya, Jong-Won Shin, Jun Imaoka, and Masayoshi Yamamoto IEEE Transactions on Power Electronics, vol. 39, no. 11, pp. 14261-14270, Nov. 2024.


[6] “Novel Vertical Shunt Resistor: Integration and Optimization in Power Modules”,

Sihoon Choi, Thiyu Warnakulasooriya, Jiyoon Choi, Yu Yonezawa, Jun Imaoka, and Masayoshi Yamamoto IEEE Transactions on Power Electronics, vol. 40, no. 1, pp. 46-50, Jan. 2025.


[7] “Utilizing Silicone Gel Encapsulation in Power Semiconductor Module to Improve Manufacturability while Reducing Common-Mode Noise”,

Sihoon Choi, Jiyoon Choi, Thiyu Warnakulasooriya, Jong-Won Shin, Jun Imaoka, and Masayoshi Yamamoto IEEE Transactions on Power Electronics, vol. 41, no. 3, pp. 3308-3318, Mar. 2026.


International Conference paper

[1] “Design Method of Coupled Inductors Using Powder Core Considering Soft Saturation and Effects of Air Gap in Multiphase Operation”,

Sihoon Choi, Jun Imaoka, and Masayoshi Yamamoto, International Conference on Materials and Systems for Sustainability – ICMaSS2021, Nov. 2021.


[2] “Derivation of Resonant Period for Soft Switching by Linearizing Output Capacitance of Switching Device”,

Sihoon Choi, Ayato Suzuki, Jun Imaoka, and Masayoshi Yamamoto, IEEE International Power Electronics Conference – ECCE Asia (IPEC2022), Himeji, Japan, pp. 2236-2241, May 2022.


[3] “Modeling and Design Method of Coupled Inductor Using Powder Core with Concentrated Air Gap”,

Sihoon Choi, Jun Imaoka, and Masayoshi Yamamoto, IEEE Energy Conversion Congress & Expo – ECCE, Detroit, MI, USA, pp. 1-5, Oct. 2022.


[4] “Voltage-Controlled Variable Inductor to Fix the Switching Frequency in Critical Conduction Mode”,

Sihoon Choi, Jong-Won Shin, Jun Imaoka, and Masayoshi Yamamoto, IEEE Energy Conversion Congress & Expo – ECCE, Nashville, TN, USA, Oct. 2023.


[5] “Packaging of SiC Power Module with a Low-Permittivity Material to Reduce Capacitive Coupling”,

Sihoon Choi, Jiyoon Choi, Jong-Won Shin, Jun Imaoka, and Masayoshi Yamamoto, 12th IEEE Components, Packaging, and Manufacturing Technology Symposium Japan – ICSJ, Ritsumeikan Univ., Kyoto, Japan, Nov. 2023.


[6]“Design and Packaging Method of SiC Power Module to Attenuate Common-Mode Noise”,

Sihoon Choi, Jiyoon Choi, Yu Yonezawa, Jong-Won Shin, Jun Imaoka, and Masayoshi Yamamoto, International Conference on Materials and Systems for Sustainability – ICMaSS, Nagoya Univ., Naogya, Japan, Dec. 2023.


[7] “SiC Power Module Design with a Low-Permittivity Material to Reduce Common-Mode Noise”,

Sihoon Choi, Jiyoon Choi, Yu Yonezawa, Jong-Won Shin, Jun Imaoka, and Masayoshi Yamamoto, IEEE Applied Power Electronics Conference and Exposition – APEC, Long Beach, CA, USA, Feb. 2024.


[8] “Common-Mode Noise Reduction for Bridgeless Flyback PFC Rectifier with Balance Technique”,

Sihoon Choi, Yikun Yin, Jong-Won Shin, Jun Imaoka, and Masayoshi Yamamoto, IEEE Applied Power Electronics Conference and Exposition – APEC, Long Beach, CA, USA, Feb. 2024.


[9] “Vertical Shunt Resistor for Double-Sided Cooling Power Modules”,

Sihoon Choi, Thiyu Warnakulasooriya, Jiyoon Choi, Jun Imaoka, Masayoshi Yamamoto, Keishi Nakamura, Susumu Toyoda, and Koji Shigesawa, IEEE Applied Power Electronics Conference and Exposition – APEC, San Antonio, TX, USA, Mar. 2026.


AWARD

[1] Excellent Presentation Award, Master thesis interim presentation, Nagoya University, Sep. 2021


[2] Young Engineer Paper Presentation Award, Institute of Electronics, Information and Communication Engineers, Technical Committee on Energy Engineering in Electronics and Communications (若手エンジニア論文発表賞, 一般社団法人 電子情報通信学会 通信ソサイエティ 電子通信エネルギー技術研究専門委員会)


[3] IEEJ Industry Applications Society Excellent Presentation Award, 本部表彰, Technical Committee on Semiconductor Power Converter, IEEJ Industry Applications Society (一般社団法人 電気学会 半導体電力変換技術委員会)


[4] 2023 IEEE PELS Japan Young Engineer Award, IEEE Power Electronics Society Japan Joint Chapter


[5] 学生研究奨励賞, 電子情報通信学会東海支部


[6] IEEE名古屋支部若手奨励賞, IEEE Nagoya Section

LANGUAGE SKILLS

  • ・Native in Korean
  • ・Eloquent in English
  • ・Eloquent in Japanese (Japanese Language Proficiency Test Level N1)

    • ACADEMIC SERVICES

    • Reviewer (Journal)
    • ・IEEE Transactions on Power Electronics
    • ・IEEE Journal of Emerging and Selected Topics in Power Electronics


    • Reviewer (Conference)
    • ・IEEE Applied Power Electronics Conference (APEC) in 2024, 2025, 2026
    • ・IEEE Energy Conversion Congress & EXPO (ECCE) in 2023, 2024, 2025, 2026
    • ・IEEE Energy Conversion Congress & EXPO Europe (ECCE-Europe) in 2025, 2026
    • ・IEEE Integration of Power conversion, Electric machine, and Control (IPEC) in 2026


    • Committee
    • ・Member / Power Electronics Devices and Components Committee (PEDCC) / IEEE Industry Applications Society

      工学研究科電気工学専攻
      未来材料・システム研究所　
      未来エレクトロニクス集積研究センター

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