High efficiency single-stage electrolytic-capacitor-less flicker-free boost LED driver

Xiaofeng Lu; Junzhao Zhang; Xiaoqing Han; Fan Li; Haodi Zhao; Chen Wang; Bingshe Xu

doi:10.1117/12.3015057

4 March 2024 High efficiency single-stage electrolytic-capacitor-less flicker-free boost LED driver

Xiaofeng Lu, Junzhao Zhang, Xiaoqing Han, Fan Li, Haodi Zhao, Chen Wang, Bingshe Xu

Proceedings Volume 12981, Ninth International Symposium on Sensors, Mechatronics, and Automation System (ISSMAS 2023); 129810Y (2024) https://doi.org/10.1117/12.3015057
Event: 9th International Symposium on Sensors, Mechatronics, and Automation (ISSMAS 2023), 2023, Nanjing, China

Abstract

To solve the problems of short lifespan and double-line-frequency current ripple caused by LED driver, and reduce the number of energy processing times, a high-efficiency single-stage electrolytic-capacitor-less flicker-free Boost LED driver based on the traditional Boost circuit is proposed. The driver introduces a ripple cancellation circuit, which outputs an AC ripple cancellation voltage to offset the total voltage ripple and achieve a flicker-free LED driver. Ceramic capacitors are used instead of electrolytic capacitors to extend the life of the LED driver. 96% of the power of the LED driver is converted once, the ripple coefficient of the output voltage is less than 2%, and output capacitor Co1 and output capacitor Co2 are 100μF and 47μF ceramic capacitors respectively. Finally, an 80W experimental prototype was built to verify the feasibility of the scheme.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Xiaofeng Lu, Junzhao Zhang, Xiaoqing Han, Fan Li, Haodi Zhao, Chen Wang, and Bingshe Xu "High efficiency single-stage electrolytic-capacitor-less flicker-free boost LED driver", Proc. SPIE 12981, Ninth International Symposium on Sensors, Mechatronics, and Automation System (ISSMAS 2023), 129810Y (4 March 2024); https://doi.org/10.1117/12.3015057

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