摘要
通过将SG2525与NCP5181配合使用来实现一种自举驱动的半桥式变换器,并通过对SG2525启动过程的详细分析以及相应计算,改进了控制芯片的供电电源。这样设计的半桥变换器,没有了一般的变压器驱动、辅助供电电源,使整个变换器具有较小的体积,并省去了辅助供电部分的耗能。从而使得整个变换器达到较高的功率密度及转换效率。对半桥变换器功率结构、环路补偿等进行相应的理论分析与电路设计,仿真和实验结果验证了所设计电路的可行性及理论分析的正确性。
By combining SG2525 with NCP5181 a half-bridge converter is realized with bootstrap driving. The power supply of the control chip is improved based on a detailed analysis as well as the corresponding calculation on SG2525 startup process. The designed half-bridge convertere liminating transformer drive and auxiliary power supply, has small volume, high power density and high conversion efficiency. Power structure, loop compensation corresponding of half-bridge converter is theoretically analysed and designed, and simulation and experimental results verify the feasibility of the circuit design and theoretical analysis.
出处
《磁性材料及器件》
北大核心
2013年第3期59-63,共5页
Journal of Magnetic Materials and Devices
关键词
变换器
自举驱动
功率密度
转换效率
环路补偿
converter
bootstrap drive
power density
conversion efficiency
loop compensation
