基于SG3525的两级式低压大电流变换器

随着电力电子技术的飞速发展，开关电源技术得到了不断的提高，现代的微处理器和一些超高速的超大规模集成电路芯片，要求运行在低压、大电流状态，传统的变换器已经不能再满足这些要求。因此，该文提出了一种“半桥＋buck电路”的双环控制变换器，该变换器动态响应速度快，稳定性高；尤其适合于高功率密度、高可靠性的低压大电流输出的小功率模块。

A Double Voltage-Loop Controller for Two-Stage Converter Based on SG3525

As the rapid development of power electronics techniques,the switched power supply techniques have been advanced.Modem microprocessor and some high speed VLSI chips must be run at low-voltage/high-current situations, the tradition converters can no more meet these.A double voltage-loop controller for two-stage converter composed of half-bridge and buck converters is proposed.Most importantly,it can achieve fast dynamic response and high stability;it is suitable for high power density,high reliability and low power with low voltage and high current output modules.