电工技术学报2011，Vol.26Issue(12)：85-92,8.
自激式LLC谐振变换器
A Self-Oscillating LLC Resonant Converter
苏少侃 1阮新波 1叶志红2
作者信息
- 1. 南京航空航天大学航空电源重点实验室南京210016
- 2. 光宝科技股份有限公司南京210019
- 折叠
摘要
Abstract
The LLC resonant converter can realize zero-voltage-switching for the switches and zero-current-switching for the rectifier diodes over the full load range, thus a high efficiency is achieved. The output voltage is independent of the load when LLC resonant converter operates at the resonant frequency. Based on this characteristic, this paper proposes a self-oscillating drive circuit for LLC resonant converter. The driving signals of the switches are obtained by the current transformer parallel with a inductor, which is used to sense the resonant inductor current, and the driving circuit is improved to speed up switching. For restraining the current overshoot during the start up period, an improved LLC resonant converter topology is used. The self-oscillating LLC resonant converter has the advantages of reduced cost and size compared with the converter with specific control chip, and it is suitable for the applications where the regulation of the output voltage is not strictly required.关键词
自激振荡/电流互感器LLC谐振变换器/钳位二极管Key words
Self-oscillating/current transformer/LLC resonant converter/clamping diode分类
信息技术与安全科学引用本文复制引用
苏少侃,阮新波,叶志红..自激式LLC谐振变换器[J].电工技术学报,2011,26(12):85-92,8.
