Design of a Single-Stage Wireless Charger with 92.3%-Peak-Efficiency for Portable Devices Applications

Lin Cheng; Xinyuan Ge; Wai Chiu Ng; Wing Hung Ki; Jiawei Zheng; Tsz Fai Kwok; Chi Ying Tsui; Ming Liu

doi:10.1109/ASP-DAC47756.2020.9045360

Design of a Single-Stage Wireless Charger with 92.3%-Peak-Efficiency for Portable Devices Applications

Lin Cheng, Xinyuan Ge, Wai Chiu Ng, Wing Hung Ki, Jiawei Zheng, Tsz Fai Kwok, Chi Ying Tsui, Ming Liu

Department of Electronic and Computer Engineering

Research output: Chapter in Book/Conference Proceeding/Report › Conference Paper published in a book › peer-review

Abstract

This summary presents a fully-integrated wireless charger to achieve high efficiency with low cost and volume. The charger realizes power rectification, voltage regulation and CCCV charging in one power stage only. A bootstrapping technique is also designed for on-chip integration of the bootstrap capacitors. A chip prototype was fabricated in a standard 0.35μm CMOS process with a die area of 8mm². The charger achieves peak efficiency of 92.3% and 91.4% when the charging currents are 1A and 1.5A, respectively.

Original language	English
Title of host publication	ASP-DAC 2020 - 25th Asia and South Pacific Design Automation Conference, Proceedings
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	1-2
Number of pages	2
ISBN (Electronic)	9781728141237
DOIs	https://doi.org/10.1109/ASP-DAC47756.2020.9045360
Publication status	Published - Jan 2020
Event	25th Asia and South Pacific Design Automation Conference, ASP-DAC 2020 - Beijing, China Duration: 13 Jan 2020 → 16 Jan 2020

Publication series

Name	Proceedings of the Asia and South Pacific Design Automation Conference, ASP-DAC
Volume	2020-January

Conference

Conference	25th Asia and South Pacific Design Automation Conference, ASP-DAC 2020
Country/Territory	China
City	Beijing
Period	13/01/20 → 16/01/20

Bibliographical note

Publisher Copyright:
© 2020 IEEE.

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10.1109/ASP-DAC47756.2020.9045360

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Cheng, L., Ge, X., Ng, W. C., Ki, W. H., Zheng, J., Kwok, T. F., Tsui, C. Y., & Liu, M. (2020). Design of a Single-Stage Wireless Charger with 92.3%-Peak-Efficiency for Portable Devices Applications. In ASP-DAC 2020 - 25th Asia and South Pacific Design Automation Conference, Proceedings (pp. 1-2). Article 9045360 (Proceedings of the Asia and South Pacific Design Automation Conference, ASP-DAC; Vol. 2020-January). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ASP-DAC47756.2020.9045360

Cheng, Lin ; Ge, Xinyuan ; Ng, Wai Chiu et al. / Design of a Single-Stage Wireless Charger with 92.3%-Peak-Efficiency for Portable Devices Applications. ASP-DAC 2020 - 25th Asia and South Pacific Design Automation Conference, Proceedings. Institute of Electrical and Electronics Engineers Inc., 2020. pp. 1-2 (Proceedings of the Asia and South Pacific Design Automation Conference, ASP-DAC).

@inproceedings{b1917d25cf5c442ebfb753ac64a95e37,

title = "Design of a Single-Stage Wireless Charger with 92.3\%-Peak-Efficiency for Portable Devices Applications",

abstract = "This summary presents a fully-integrated wireless charger to achieve high efficiency with low cost and volume. The charger realizes power rectification, voltage regulation and CCCV charging in one power stage only. A bootstrapping technique is also designed for on-chip integration of the bootstrap capacitors. A chip prototype was fabricated in a standard 0.35μm CMOS process with a die area of 8mm2. The charger achieves peak efficiency of 92.3\% and 91.4\% when the charging currents are 1A and 1.5A, respectively.",

author = "Lin Cheng and Xinyuan Ge and Ng, \{Wai Chiu\} and Ki, \{Wing Hung\} and Jiawei Zheng and Kwok, \{Tsz Fai\} and Tsui, \{Chi Ying\} and Ming Liu",

note = "Publisher Copyright: {\textcopyright} 2020 IEEE.; 25th Asia and South Pacific Design Automation Conference, ASP-DAC 2020 ; Conference date: 13-01-2020 Through 16-01-2020",

year = "2020",

month = jan,

doi = "10.1109/ASP-DAC47756.2020.9045360",

language = "English",

series = "Proceedings of the Asia and South Pacific Design Automation Conference, ASP-DAC",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

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booktitle = "ASP-DAC 2020 - 25th Asia and South Pacific Design Automation Conference, Proceedings",

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Cheng, L, Ge, X, Ng, WC, Ki, WH, Zheng, J, Kwok, TF, Tsui, CY & Liu, M 2020, Design of a Single-Stage Wireless Charger with 92.3%-Peak-Efficiency for Portable Devices Applications. in ASP-DAC 2020 - 25th Asia and South Pacific Design Automation Conference, Proceedings., 9045360, Proceedings of the Asia and South Pacific Design Automation Conference, ASP-DAC, vol. 2020-January, Institute of Electrical and Electronics Engineers Inc., pp. 1-2, 25th Asia and South Pacific Design Automation Conference, ASP-DAC 2020, Beijing, China, 13/01/20. https://doi.org/10.1109/ASP-DAC47756.2020.9045360

Design of a Single-Stage Wireless Charger with 92.3%-Peak-Efficiency for Portable Devices Applications. / Cheng, Lin; Ge, Xinyuan; Ng, Wai Chiu et al.
ASP-DAC 2020 - 25th Asia and South Pacific Design Automation Conference, Proceedings. Institute of Electrical and Electronics Engineers Inc., 2020. p. 1-2 9045360 (Proceedings of the Asia and South Pacific Design Automation Conference, ASP-DAC; Vol. 2020-January).

Research output: Chapter in Book/Conference Proceeding/Report › Conference Paper published in a book › peer-review

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AU - Ki, Wing Hung

AU - Zheng, Jiawei

AU - Kwok, Tsz Fai

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N2 - This summary presents a fully-integrated wireless charger to achieve high efficiency with low cost and volume. The charger realizes power rectification, voltage regulation and CCCV charging in one power stage only. A bootstrapping technique is also designed for on-chip integration of the bootstrap capacitors. A chip prototype was fabricated in a standard 0.35μm CMOS process with a die area of 8mm2. The charger achieves peak efficiency of 92.3% and 91.4% when the charging currents are 1A and 1.5A, respectively.

AB - This summary presents a fully-integrated wireless charger to achieve high efficiency with low cost and volume. The charger realizes power rectification, voltage regulation and CCCV charging in one power stage only. A bootstrapping technique is also designed for on-chip integration of the bootstrap capacitors. A chip prototype was fabricated in a standard 0.35μm CMOS process with a die area of 8mm2. The charger achieves peak efficiency of 92.3% and 91.4% when the charging currents are 1A and 1.5A, respectively.

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UR - https://www.scopus.com/pages/publications/85083035633

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Cheng L, Ge X, Ng WC, Ki WH, Zheng J, Kwok TF et al. Design of a Single-Stage Wireless Charger with 92.3%-Peak-Efficiency for Portable Devices Applications. In ASP-DAC 2020 - 25th Asia and South Pacific Design Automation Conference, Proceedings. Institute of Electrical and Electronics Engineers Inc. 2020. p. 1-2. 9045360. (Proceedings of the Asia and South Pacific Design Automation Conference, ASP-DAC). doi: 10.1109/ASP-DAC47756.2020.9045360

Design of a Single-Stage Wireless Charger with 92.3%-Peak-Efficiency for Portable Devices Applications

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