Digital synchronous rectification driving method for LLC resonant converter

被引：0
|
作者：
Lü Z.-Y. [1 ]
Li J.-C. [1 ]
Yang H. [2 ]
机构：
[1] College of Electrical Engineering, Zhejiang University, Hangzhou
[2] China Aerospace Science and Technology Corporation Eighth Institute 811 Place, Shanghai
来源：
Lü, Zheng-Yu | 2018年 / Editorial Department of Electric Machines and Control卷 / 22期
关键词：
Body diode; Digital processor; Digital synchronous rectification; Drain-source voltage; LLC resonant converter;
D O I：
10.15938/j.emc.2018.01.003
中图分类号：
学科分类号：
摘要：
A digital synchronous rectification driving method for LLC resonant converter was proposed.This driving method was based on detection of the drain-source voltage of the synchronous rectifier MOS, and then conduction of the body diode was judged.Through the voltage comparator, the output level was transferred to the digital processor, and algorithm captures the turn-on time of the body diode and regulates the duty cycle of the driving signal of the synchronous rectifier tube, so that the synchronous rectification achieves the ideal effect, and the efficiency of the converter is improved.Compared with the traditional synchronous rectification driving method, it has the advantages of simple circuit structure and control algorithm, accurate driving signal, good dynamic performance and so on.In order to verify effectiveness of the proposed method, a 72 W half bridge LLC resonant converter is used as the prototype, and the efficiency is 97.5%. © 2018, Harbin University of Science and Technology Publication. All right reserved.
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页码：16 / 22
页数：6
相关论文
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