低功耗Boost型DC/DC变换器  

Boost DC/DC Converters with Low Power Consumption

作　　者：李学敏[1] 廖无限[1] 任于涵 

机构地区：[1]湖南工业大学电气与信息工程学院,湖南株洲412007

出　　处：《湖南工业大学学报》2016年第5期27-31,共5页Journal of Hunan University of Technology

基　　金：湖南省教育厅科研基金资助项目(15C0393)

摘　　要：分析Boost和同步整流开关电源电路的工作原理,设计Boost电路的主要参数及控制回路,最后测试了基于LM5121的低功耗Boost型DC/DC变换器样机,其输出电压为48 V,输出功率为100 W。测试结果表明:样机输出电压稳定,整机效率高达8 8%,它是一种经济适用的低功耗小型开关电源。An analysis has been made of the operating principle of Boost and synchronous rectifier switch power supply circuit, and a design has been proposed for the main parameters and control circuit of Boost circuit, followed by the test of a low-power-consumption DC/DC Boost converter prototype based on LM5121, with 48 V its output voltage and 100 W its output power. Testing results substantiate the stable output voltage of the prototype, with an overall efficiency as high as 88%, thus proving it to be an economical and applicable switching power supply with low power consumption.

关 键 词：低功耗 BOOST 开关电源 同步整流 LM5121 

分 类 号：TM46[电气工程—电器]