电子器件2017，Vol.40Issue(1)：256-261,6.DOI:10.3969/j.issn.1005-9490.2017.01.048
宽范围输入高效LLC谐振变换器的研究∗
Research of LLC Resonant Converter with Wide Range Input and High Efficiency
摘要
Abstract
To solve the disadvantage of the LLC resonant converter is not suitable for wide range input, and the efficiency is low in the whole load range as the wide range input. A method of combining variable frequency multiplier technique and burst-mode control strategy is proposed. The implementation processes of this method are analyzed,and its feasibility is verified by a 300 W prototype. The test data show that the converter can achieve wide input range of 100 V~400 V. Under this range,the efficiency can reach 94.8%~96.5% at the load more than 20%and achieve more than 93.5% at the load 5%~20%,and in of load condition less than 5% the efficiency is higher than 87.8%.关键词
LLC谐振变换器/宽输入电压范围/高效率/可变倍频技术/Burst模式Key words
LLC resonant converter/wide input voltage range/high efficiency/variable frequency multiplier technique/burst-mode分类
信息技术与安全科学引用本文复制引用
史永胜,李利,田卫东,高丹阳..宽范围输入高效LLC谐振变换器的研究∗[J].电子器件,2017,40(1):256-261,6.基金项目
国家自然科学基金项目(59493300)；教育部博士点基金项目(9800462)；陕西省工业科技攻关项目(2015GY173)；西安市产学研协同创新计划项目( CXY1513－5) （59493300）
