采用高电压增益的开关电感和开关电容降压升压转换器的LED吸收驱动器的设计

2020 2nd International Conference on Smart Power & Internet Energy Systems (SPIES) Pub Date : 2020-09-15 DOI:10.1109/SPIES48661.2020.9243052

K. Eguchi, A. Shibata, F. Asadi, T. Ishibashi, Yujiro Harada, I. Oota

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引用次数: 3

摘要

提出了一种基于开关电感和开关电容(SISC)降压升压变换器的新型发光二极管(LED) sink驱动器。所提出的LED驱动器可以通过将SI降压升压块和SC倍频块与飞行电容器级联来实现高电压增益。所提出的负SISC拓扑不仅可以提供高电压增益，还可以提供灵活的LED电流可控性。采用集成电路重点(SPICE)仿真程序对所提出的SISC buck-boost变换器的性能进行了验证。仿真结果表明，当占空比D为0.5，输出功率为500mW时，SISC buck-boost变换器的功率效率比传统混合式buck-boost变换器提高6%左右。此外，面包板实验验证了所提出的SISC拓扑的可行性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Design of an LED Sink Driver Using a Switched-Inductor and Switched-Capacitor Buck-Boost Converter with High Voltage Gains

A novel light emitting diode (LED) sink driver using a switched-inductor and switched capacitor (SISC) buck-boost converter is proposed in this paper. The proposed LED driver can achieve a high voltage gain by cascading the SI buck-boost block and the SC doubler block with a flying capacitor. The proposed negative SISC topology can provide not only high voltage gain but also flexible controllability of LED currents. The performance of the proposed SISC buck-boost converter was clarified by simulation program with integrated circuit emphasis (SPICE) simulations. In the performed simulations, the proposed SISC buck-boost converter can improve power efficiency about 6% from the conventional hybrid buck-boost converter when the duty factor D is 0.5 and the output power is 500mW. Furthermore, the feasibility of the proposed SISC topology was confirmed by breadboard experiments.

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来源期刊

2020 2nd International Conference on Smart Power & Internet Energy Systems (SPIES)

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