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Volume 17
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Article

A Soft-Switching Proportional Dimming LED Driver Based on Switched Capacitor

by
Jie Zhang
,
Lu Jiang
* and
Weichong Xie
Hubei Collaborative Innovation Center for High-Efficiency Utilization of Solar Energy, Hubei University of Technology, Wuhan 430070, China
*
Author to whom correspondence should be addressed.
Energies 2024, 17(6), 1368; https://doi.org/10.3390/en17061368
Submission received: 25 January 2024 / Revised: 23 February 2024 / Accepted: 28 February 2024 / Published: 12 March 2024
(This article belongs to the Section F: Electrical Engineering)
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Abstract

This paper proposes a switched capacitor-based soft-switching proportional dimming LED driver to address color-mixing LED applications. The driver utilizes a half-bridge switch structure and incorporates a switched capacitor to regulate the dual resonant network. This configuration facilitates current sharing across each resonant network and enables fixed proportion dimming between them. The common inductance leveraged in this design results in fewer switching devices, thereby enhancing efficiency. Furthermore, all switches and diodes achieve soft switching, contributing to high efficiency. Finally, this paper built a 19 W experimental prototype, and the maximum efficiency reached 95.56%, which verified the correctness and feasibility of the driver.
Keywords: soft switching; current sharing; dimming soft switching; current sharing; dimming

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MDPI and ACS Style

Zhang, J.; Jiang, L.; Xie, W. A Soft-Switching Proportional Dimming LED Driver Based on Switched Capacitor. Energies 2024, 17, 1368. https://doi.org/10.3390/en17061368

AMA Style

Zhang J, Jiang L, Xie W. A Soft-Switching Proportional Dimming LED Driver Based on Switched Capacitor. Energies. 2024; 17(6):1368. https://doi.org/10.3390/en17061368

Chicago/Turabian Style

Zhang, Jie, Lu Jiang, and Weichong Xie. 2024. "A Soft-Switching Proportional Dimming LED Driver Based on Switched Capacitor" Energies 17, no. 6: 1368. https://doi.org/10.3390/en17061368

APA Style

Zhang, J., Jiang, L., & Xie, W. (2024). A Soft-Switching Proportional Dimming LED Driver Based on Switched Capacitor. Energies, 17(6), 1368. https://doi.org/10.3390/en17061368

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