针对宽输入范围开关稳压电源的研究与设计  

Research and Design of Switching Power Supply with Wide Input Range

作　　者：王如昌 张文超[1] 

机构地区：[1]杭州电子科技大学电子信息学院,浙江杭州310018

出　　处：《杭州电子科技大学学报（自然科学版）》2016年第2期18-22,共5页Journal of Hangzhou Dianzi University：Natural Sciences

摘　　要：针对输入电压为45～275V的开关电源,提出了一种基于全桥和Boost的设计方案.输入电压在45～100V时先通过Boost升压电路将电压升到110V,然后经过全桥得到所需的电压,输入电压在100～275V时直接通过全桥电路获得所需电压.针对该方案对外围辅助电路进行了具体优化和设计,使得输出的电压纹波小于0.5%,达到了良好的稳压效果,验证了方案的可行性.A design scheme based on full bridge and Boost is proposed based on the input voltage of45-275 V.The input voltage is raised to 110 Vthrough the Boost converter when input voltage at 45-100 V,and then the required voltage is obtained by the whole bridge,and the required voltage is obtained directly through the full bridge circuit when input voltage at 100-275 V.In this scheme,the design of the peripheral auxiliary circuit is optimized and designed,the output voltage ripple is less than 0.5%,which achieves the good effect,and the feasibility of the scheme is verified.

关 键 词：宽输入 全桥 BOOST 稳压电源 

分 类 号：TM402[电气工程—电器]