Optimal design of LED array for single-loop CCM buck-boost LED driver

R. Lin, Chia-Chun Lee, Yi-Chun Chang
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引用次数: 37

Abstract

This paper presents optimal design of the light-emitting-diode (LED) array for the single-loop CCM buck-boost LED driver. The exponential function for describing the characteristics of the LED is used to represent the relationship between the forward voltage and current of LEDs. Moreover, in order to analyze the system characteristics, the equivalent circuits of the single-loop buck-boost driver for the LED array are built. Considering the requirement of the system stability and maximum-efficiency power transferring, the unity quality factor is preferred for the optimal design of the LED array. In this paper, the derived transfer functions are verified with SIMPLIS® simulation results.
单环CCM降压型LED驱动器LED阵列的优化设计
本文提出了单环CCM降压升压LED驱动器中发光二极管阵列的优化设计。用描述LED特性的指数函数来表示LED的正向电压和电流之间的关系。此外,为了分析系统特性,构建了用于LED阵列的单环降压-升压驱动等效电路。考虑到系统稳定性和功率传输效率的要求,采用统一的质量因数进行LED阵列的优化设计。本文用SIMPLIS®仿真结果验证了推导的传递函数。
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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