一种提高DC-DC开关变换器瞬态响应的补偿算法  

A compensation algorithm to improve transient response of DC-DC converter

作　　者：张永领 解光军[1] 张章[1] 易茂祥[1] 程心[1] ZHANG Yongling;XIE Guangjun;ZHANG Zhang;YI Maoxiang;CHENG Xin(School of Electronic Science and Applied Physics,Hefei University of Technology,Hefei 230009,China)

机构地区：[1]合肥工业大学电子科学与应用物理学院,安徽合肥230009

出　　处：《合肥工业大学学报（自然科学版）》2018年第3期362-367,共6页Journal of Hefei University of Technology：Natural Science

基　　金：国家自然科学基金资助项目(61401137;61404043;61371025)

摘　　要：文章提出了一种应用于DC-DC开关变换器的改进型补偿算法,以提高电路瞬态响应。输出电压能自适应改变锯齿波的相对值,使锯齿波上下平移,从而使占空比可以在0~100%之间迅速变化,基于该原理将改变锯齿波的方法转化为补偿函数的改变,无需改变斜坡震荡器即可实现简化电路结构、降低功耗。Matlab仿真结果表明,该算法能使瞬态响应速度提高近10倍。An improved compensation algorithm applied in DC-DC converter is proposed, aiming at improving the transient response of the circuit. The proposition of the algorithm is based on changing the relative value of saw tooth signal adaptively according to the value of output voltage, making the ramp signal moving up and down, thus making duty cycle varying from 0 to 100% rapidly. Based on this theory, the transient response is enhanced by changing compensation function adaptively, which achieves simpler circuit structure and lower power consumption. The simulation result by Matlab reveals that the transient response time is reduced by ten times by this algorithm.

关 键 词：DC-DC开关变换器 瞬态响应 补偿算法 锯齿波 

分 类 号：TM46[电气工程—电器]