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一、前言开关电源至今有二十年的历史。二十年来研制出多种形式的开关电源线路,使电源的体积和重量成倍地下降,在线路技术方面日臻完善,现已趋于成熟。为了改善电源的动态特性和寻求线路的最佳设计,迫切需要开展开关电源闭环系统的研究。开始时这方面进展一直比较缓慢,主要的困难是断续调节系统的非线性,但近年来在闭环分析方面有了较大的进展。
First, the foreword Switching power supply has twenty years of history. Twenty years to develop a variety of forms of switching power supply lines, so that the power supply size and weight doubled decline in the line technology is improving, has now matured. In order to improve the dynamic characteristics of the power supply and seek the best circuit design, it is urgent to carry out the research on the closed-loop system of switching power supply. Progress has been slow in the beginning. The main difficulty is the intermittent regulation of the nonlinearity of the system, but in recent years there has been considerable progress in closed-loop analysis.