高精密、高性价比双路稳压电源的研制  

作　　者：宋志杰[1] 商振翔 毛君龙 

机构地区：[1]临沂大学,山东临沂276000

出　　处：《科技视界》2017年第4期167-168,共2页Science & Technology Vision

摘　　要：采用同步降压控制器LM5119芯片和贴片式低损耗MOS场效应管及正激拓扑设计而成的输出低电压、大电流DC/DC降压型直流双路稳压开关电源。由滤波电路、同步控制电路、DC/DC Buck电路组成,滤波电路采用并联电容的方式降低纹波电压。经测试,本电源的效率大于92%,纹波系数0.063%-0.238%,负载效应0.0889%,源效应0.0056%-0.011%。各项性能指标均优于市售产品水平。A low voltage, high current Buck DC/ DC switching power supply with a synchronous buck controller LM5119 core and a low loss MOSFET and a forward topology is designed. It is composed of a filter circuit, a synchronous control circuit and a DC/DC Buck circuit. The filter circuit uses the parallel capacitor to reduce the ripple voltage. After testing, the efficiency of the power supply is greater than 92%, the ripple factor 0.063%-0.238%, the load effect of 0.0889%, the source effect 0.0056%-0.011%. The performance indicators are better than the marketed product level.

关 键 词：同步降压 降压控制器 场效应管 

分 类 号：TN86[电子电信—信息与通信工程]