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Input Impedance Analysis for Cascaded GaN DC-DC Converter with Dead Time

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The Proceedings of 2023 International Conference on Wireless Power Transfer (ICWPT2023) (ICWPT 2023)

Part of the book series: Lecture Notes in Electrical Engineering ((LNEE,volume 1161))

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Abstract

This paper presents a modified small-signal model of GaN DC-DC converter with dead time, which improves the accuracy of converter input impedance for Cascaded system. The reverse voltage drop and reverse conducting resistance for e-GaN HEMTs are studied in the presented small-signal model. A schematic of presented model is derived based on the state-space averaging method for GaN DC-DC Converter with dead time, which provides the modified input impedance model. The dynamic input current of synchronous Buck converter shows a 8.85% increasement in the accuracy of modified input impedance model under a step variation of source voltage. A 120-W prototype is built to verify the feasibility of the proposed high-frequency.

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Acknowledgments

This research is partially supported by the National Natural Science Foundation of China under Grant 52207220, the Natural Science Foundation of Zhejiang Province under Grant LQ22E070005 and the Wenzhou Committee of Science and Technology under Grant G20220027.

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Authors and Affiliations

  1. School of Electrical and Electronic Engineering, Wenzhou University, Wenzhou, 325035, China

    Kang Liu, Wenjie Xi, Tingxuan Huang, Wenhao Xie, Zhengjiang Zhang & Xiangou Zhu

  2. Department of Fundamental Electrical Engineering, Belarusian State University of Informatics and Radioelectronics, 220013, Minsk, Belarus

    Vadim Zhuravliov

Authors
  1. Kang Liu
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  2. Wenjie Xi
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  3. Tingxuan Huang
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  4. Wenhao Xie
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  5. Zhengjiang Zhang
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  6. Xiangou Zhu
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  7. Vadim Zhuravliov
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Corresponding author

Correspondence to Wenhao Xie .

Editor information

Editors and Affiliations

  1. Harbin Institute of Technology, Weihai, Shandong, China

    Chunwei Cai

  2. Southeast University, Nanjing, Jiangsu, China

    Xiaohui Qu

  3. Southwest Jiaotong University, Chengdu, Sichuan, China

    Ruikun Mai

  4. Tsinghua University, Beijing, China

    Pengcheng Zhang

  5. Harbin Institute of Technology, Weihai, Shandong, China

    Wenping Chai

  6. Harbin Institute of Technology, Weihai, Shandong, China

    Shuai Wu

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Liu, K. et al. (2024). Input Impedance Analysis for Cascaded GaN DC-DC Converter with Dead Time. In: Cai, C., Qu, X., Mai, R., Zhang, P., Chai, W., Wu, S. (eds) The Proceedings of 2023 International Conference on Wireless Power Transfer (ICWPT2023). ICWPT 2023. Lecture Notes in Electrical Engineering, vol 1161. Springer, Singapore. https://doi.org/10.1007/978-981-97-0869-7_20

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  • DOI: https://doi.org/10.1007/978-981-97-0869-7_20

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  • Publisher Name: Springer, Singapore

  • Print ISBN: 978-981-97-0868-0

  • Online ISBN: 978-981-97-0869-7

  • eBook Packages: EngineeringEngineering (R0)

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