同步整流技术在低压大电流电源模块中的应用  

Application of synchronous rectification technology in low-voltage and high-current power supply module

作　　者：钟才惠[1] 王德贤[1] 王之纯[1] 

机构地区：[1]三峡大学电气与新能源学院,湖北宜昌443002

出　　处：《电源技术》2013年第5期857-859,共3页Chinese Journal of Power Sources

摘　　要：提出了基于单周期控制的同步整流Buck变换器的实现方法,推导得到单周期控制Buck变换器的控制模型并给出了仿真验证。详细给出了主电路设计方法,包括主开关管和同步整流管的选择、输出滤波器的设计方法等。最后制作了一台输出为1.8V、20A的低压大电流电源模块样机,实验结果证明了设计方法的有效性和准确性。The realization method of synchronous Buck converter based on one-cycle control method was proposed. The control model was firstly derived and verified by simulation. The details on the main circuit design was presented, including the selection of main power switch and synchronous switch, the design of output filter, etc. Finally, a prototype with 1.8 V output voltage and 20 A output current was build, and the experimental result verifies the feasibility and accuracy of the proposed design method.

关 键 词：同步整流 单周期控制 低压大电流电源模块 

分 类 号：TM571[电气工程—电器]