Analysis of GaN Based Full-bridge CLLC Resonant Converter Considering Output Capacitances under Light-load Conditions

Tianhua Zhu; Fang Zhuo; Fangzhou Zhao; Feng Wang; Ruijie Song; Meng Wang

doi:10.1109/IPEMC-ECCEAsia48364.2020.9368144

Analysis of GaN Based Full-bridge CLLC Resonant Converter Considering Output Capacitances under Light-load Conditions

Tianhua Zhu, Fang Zhuo, Fangzhou Zhao, Feng Wang, Ruijie Song, Meng Wang

Research output: Contribution to book/anthology/report/conference proceeding › Article in proceeding › Research › peer-review

6 Citations (Scopus)

Abstract

Under light-load conditions, the voltage gain of CLLC resonant converter usually exhibits an abnormal increase with rising switching frequency. To investigate the practical voltage gain characteristic, this paper proposes a comprehensive analysis for GaN based full-bridge CLLC converter at light-load conditions. A detailed time-domain circuit model is established considering output capacitances and dead-time operation. Based on the model, the output voltage is derived, and its main influencing factors are discussed to explain the light-load gain characteristic. Finally, a 21.5V/400V, 200W GaN based CLLC resonant converter prototype is built to verify the correctness of the analysis.

Original language	English
Title of host publication	2020 IEEE 9th International Power Electronics and Motion Control Conference (IPEMC2020-ECCE Asia)
Number of pages	6
Publisher	IEEE
Publication date	Dec 2020
Pages	2319-2324
Article number	9368144
ISBN (Print)	978-1-7281-5302-5
DOIs	https://doi.org/10.1109/IPEMC-ECCEAsia48364.2020.9368144
Publication status	Published - Dec 2020
Event	2020 IEEE 9th International Power Electronics and Motion Control Conference (IPEMC2020-ECCE Asia) - Nanjing, China Duration: 29 Nov 2020 → 2 Dec 2020

Conference

Conference	2020 IEEE 9th International Power Electronics and Motion Control Conference (IPEMC2020-ECCE Asia)
Country/Territory	China
City	Nanjing
Period	29/11/2020 → 02/12/2020

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10.1109/IPEMC-ECCEAsia48364.2020.9368144

https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=9368144

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Zhu, T., Zhuo, F., Zhao, F., Wang, F., Song, R., & Wang, M. (2020). Analysis of GaN Based Full-bridge CLLC Resonant Converter Considering Output Capacitances under Light-load Conditions. In 2020 IEEE 9th International Power Electronics and Motion Control Conference (IPEMC2020-ECCE Asia) (pp. 2319-2324). Article 9368144 IEEE. https://doi.org/10.1109/IPEMC-ECCEAsia48364.2020.9368144

@inproceedings{9080b996110d450fa0b6b583fd12d1a6,

title = "Analysis of GaN Based Full-bridge CLLC Resonant Converter Considering Output Capacitances under Light-load Conditions",

abstract = "Under light-load conditions, the voltage gain of CLLC resonant converter usually exhibits an abnormal increase with rising switching frequency. To investigate the practical voltage gain characteristic, this paper proposes a comprehensive analysis for GaN based full-bridge CLLC converter at light-load conditions. A detailed time-domain circuit model is established considering output capacitances and dead-time operation. Based on the model, the output voltage is derived, and its main influencing factors are discussed to explain the light-load gain characteristic. Finally, a 21.5V/400V, 200W GaN based CLLC resonant converter prototype is built to verify the correctness of the analysis.",

keywords = "Voltage measurement, Switching frequency, Resonant converters, Capacitance, Gallium nitride, Time-domain analysis, Integrated circuit modeling",

author = "Tianhua Zhu and Fang Zhuo and Fangzhou Zhao and Feng Wang and Ruijie Song and Meng Wang",

year = "2020",

month = dec,

doi = "10.1109/IPEMC-ECCEAsia48364.2020.9368144",

language = "English",

isbn = "978-1-7281-5302-5",

pages = "2319--2324",

booktitle = "2020 IEEE 9th International Power Electronics and Motion Control Conference (IPEMC2020-ECCE Asia)",

publisher = "IEEE",

address = "United States",

note = "2020 IEEE 9th International Power Electronics and Motion Control Conference (IPEMC2020-ECCE Asia) ; Conference date: 29-11-2020 Through 02-12-2020",

}

Zhu, T, Zhuo, F, Zhao, F, Wang, F, Song, R & Wang, M 2020, Analysis of GaN Based Full-bridge CLLC Resonant Converter Considering Output Capacitances under Light-load Conditions. in 2020 IEEE 9th International Power Electronics and Motion Control Conference (IPEMC2020-ECCE Asia)., 9368144, IEEE, pp. 2319-2324, 2020 IEEE 9th International Power Electronics and Motion Control Conference (IPEMC2020-ECCE Asia), Nanjing, China, 29/11/2020. https://doi.org/10.1109/IPEMC-ECCEAsia48364.2020.9368144

Analysis of GaN Based Full-bridge CLLC Resonant Converter Considering Output Capacitances under Light-load Conditions. / Zhu, Tianhua; Zhuo, Fang; Zhao, Fangzhou et al.
2020 IEEE 9th International Power Electronics and Motion Control Conference (IPEMC2020-ECCE Asia). IEEE, 2020. p. 2319-2324 9368144.

Research output: Contribution to book/anthology/report/conference proceeding › Article in proceeding › Research › peer-review

TY - GEN

T1 - Analysis of GaN Based Full-bridge CLLC Resonant Converter Considering Output Capacitances under Light-load Conditions

AU - Zhu, Tianhua

AU - Zhuo, Fang

AU - Zhao, Fangzhou

AU - Wang, Feng

AU - Song, Ruijie

AU - Wang, Meng

PY - 2020/12

Y1 - 2020/12

N2 - Under light-load conditions, the voltage gain of CLLC resonant converter usually exhibits an abnormal increase with rising switching frequency. To investigate the practical voltage gain characteristic, this paper proposes a comprehensive analysis for GaN based full-bridge CLLC converter at light-load conditions. A detailed time-domain circuit model is established considering output capacitances and dead-time operation. Based on the model, the output voltage is derived, and its main influencing factors are discussed to explain the light-load gain characteristic. Finally, a 21.5V/400V, 200W GaN based CLLC resonant converter prototype is built to verify the correctness of the analysis.

AB - Under light-load conditions, the voltage gain of CLLC resonant converter usually exhibits an abnormal increase with rising switching frequency. To investigate the practical voltage gain characteristic, this paper proposes a comprehensive analysis for GaN based full-bridge CLLC converter at light-load conditions. A detailed time-domain circuit model is established considering output capacitances and dead-time operation. Based on the model, the output voltage is derived, and its main influencing factors are discussed to explain the light-load gain characteristic. Finally, a 21.5V/400V, 200W GaN based CLLC resonant converter prototype is built to verify the correctness of the analysis.

KW - Voltage measurement

KW - Switching frequency

KW - Resonant converters

KW - Capacitance

KW - Gallium nitride

KW - Time-domain analysis

KW - Integrated circuit modeling

UR - https://ieeexplore.ieee.org/document/9368144/

U2 - 10.1109/IPEMC-ECCEAsia48364.2020.9368144

DO - 10.1109/IPEMC-ECCEAsia48364.2020.9368144

M3 - Article in proceeding

SN - 978-1-7281-5302-5

SP - 2319

EP - 2324

BT - 2020 IEEE 9th International Power Electronics and Motion Control Conference (IPEMC2020-ECCE Asia)

PB - IEEE

T2 - 2020 IEEE 9th International Power Electronics and Motion Control Conference (IPEMC2020-ECCE Asia)

Y2 - 29 November 2020 through 2 December 2020

ER -

Analysis of GaN Based Full-bridge CLLC Resonant Converter Considering Output Capacitances under Light-load Conditions

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