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A New GaN-Based Device, P-Cascode GaN HEMT, and Its Synchronous Buck Converter Circuit Realization

Author

Listed:
  • Chih-Chiang Wu

    (Mechanical and Mechatronics Systems Research Laboratories, Industrial Technology Research Institute, Hsinchu 31040, Taiwan)

  • Ching-Yao Liu

    (Department of Mechanical Engineering, College of Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan)

  • Guo-Bin Wang

    (Department of Mechanical Engineering, College of Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan)

  • Yueh-Tsung Shieh

    (Department of Mechanical Engineering, College of Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan)

  • Wei-Hua Chieng

    (Department of Mechanical Engineering, College of Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan)

  • Edward Yi Chang

    (Department of Material Science and Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan)

Abstract

This paper attempts to disclose a new GaN-based device, called the P-Cascode GaN HEMT, which uses only a single gate driver to control both the D-mode GaN and PMOS transistors. The merit of this synchronous buck converter is that it can reduce the circuit complexity of the synchronous buck converter, which is widely used to provide non-isolated power for low-voltage and high-current supply to system chips; therefore, the power conversion efficiency of the converter can be improved. In addition, the high side switch using a single D-mode GaN HEMT, which has no body diode, can prevent the bi-directional flow and thus reduce the power loss and cost compared to a design based on a series of two opposite MOSFETs. The experiment shows that the proposed P-Cascode GaN HEMT efficiency is above 98% when it operates at 500 kHz with 6 W output. With the input voltage at 12 V, the synchronous buck converter provides an adjustable regulated output voltage from 1.2 V to 10 V while delivering a maximum output current of 2 A.

Suggested Citation

  • Chih-Chiang Wu & Ching-Yao Liu & Guo-Bin Wang & Yueh-Tsung Shieh & Wei-Hua Chieng & Edward Yi Chang, 2021. "A New GaN-Based Device, P-Cascode GaN HEMT, and Its Synchronous Buck Converter Circuit Realization," Energies, MDPI, vol. 14(12), pages 1-23, June.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:12:p:3477-:d:573509
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    References listed on IDEAS

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    1. Surya Elangovan & Stone Cheng & Edward Yi Chang, 2020. "Reliability Characterization of Gallium Nitride MIS-HEMT Based Cascode Devices for Power Electronic Applications," Energies, MDPI, vol. 13(10), pages 1-11, May.
    2. Ching-Yao Liu & Guo-Bin Wang & Chih-Chiang Wu & Edward Yi Chang & Stone Cheng & Wei-Hua Chieng, 2021. "Derivation of the Resonance Mechanism for Wireless Power Transfer Using Class-E Amplifier," Energies, MDPI, vol. 14(3), pages 1-22, January.
    3. You-Chen Weng & Chih-Chiang Wu & Edward Yi Chang & Wei-Hua Chieng, 2021. "Minimum Power Input Control for Class-E Amplifier Using Depletion-Mode Gallium Nitride High Electron Mobility Transistor," Energies, MDPI, vol. 14(8), pages 1-16, April.
    4. Mauricio Dalla Vecchia & Simon Ravyts & Giel Van den Broeck & Johan Driesen, 2019. "Gallium-Nitride Semiconductor Technology and Its Practical Design Challenges in Power Electronics Applications: An Overview," Energies, MDPI, vol. 12(14), pages 1-20, July.
    5. Po-Chien Chou & Szu-Hao Chen & Ting-En Hsieh & Stone Cheng & Jesús A. Del Alamo & Edward Yi Chang, 2017. "Evaluation and Reliability Assessment of GaN-on-Si MIS-HEMT for Power Switching Applications," Energies, MDPI, vol. 10(2), pages 1-12, February.
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    Cited by:

    1. Chih-Chiang Wu & Ching-Yao Liu & Sandeep Anand & Wei-Hua Chieng & Edward-Yi Chang & Arnab Sarkar, 2021. "Comparisons on Different Innovative Cascode GaN HEMT E-Mode Power Modules and Their Efficiencies on the Flyback Converter," Energies, MDPI, vol. 14(18), pages 1-26, September.
    2. Yueh-Tsung Shieh & Ching-Yao Liu & Chih-Chiang Wu & Wei-Hua Chieng & Edward-Yi Chang, 2022. "Flyback Converter Using a D-Mode GaN HEMT Synchronous Rectifier," Energies, MDPI, vol. 15(9), pages 1-21, April.
    3. Ching-Yao Liu & Chih-Chiang Wu & Li-Chuan Tang & Yueh-Tsung Shieh & Wei-Hua Chieng & Edward-Yi Chang, 2023. "Resonant Mechanism for a Long-Distance Wireless Power Transfer Using Class E PA and GaN HEMT," Energies, MDPI, vol. 16(9), pages 1-21, April.

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