应用于LED驱动的变频自振荡变换器

2017 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC) Pub Date : 2017-11-01 DOI:10.1109/ROPEC.2017.8261679

Efrén Flores García, Ramón Díaz de León Zapata, Ariel B. de la Rosa Zapata

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引用次数: 2

摘要

介绍了一种用于发光二极管(led)的驱动变换器。该驱动器基于半桥自振荡转换器(SOC)，并使用可变频率来减少由于来自先前功率因数校正器(PFC)级的输入电压纹波而导致的输出电流波动。该方案原型采用离散自振荡驱动电路、串联谐振槽和简单的频率控制电路。该拓扑不使用电解电容，实验结果表明了该方案的可行性。

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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Variable frequency self-oscillating converter applied as a LED driver

A drive converter for light emitting diodes (LEDs) is presented. The driver is based on a half-bridge self-oscillating converter (SOC) and uses variable frequency to reduce the output current fluctuation due to the input voltage ripple coming from a previous power factor corrector (PFC) stage. The proposal prototype employs a discrete self-oscillating drive circuit with a series resonant tank and a simple frequency control circuit. The topology uses no electrolytic capacitors and experimental results shows the feasibility of the proposal.

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来源期刊

2017 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC)

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