摘要
介绍了基于UCC28910的5V／1．2A隔离反激式开关电源。电路结构简单，所需外部元件较少，有效减少了电路板占用面积。电源可实现AC85-265V宽电压输入，在无需光耦合器的情况下实现恒定电压与恒定电流输出。具有700V高压启动和小于30mw待机功耗的特点。采用DCM模式减少开关损耗，符合EnergyStarEPS2．0标准。
The design of 5 V/1.2 A isolated flyback switching power supply based on UCC28910 is introduced. Its circuit structure is simple and fewer external components are required, which reduces the area occupied by PCB effectively. The power supply can accepts a wide range voltage input of 85 VAC to 265 VAC. The constant voltage and current output was realized without any opto-coupler. This device has characteristics of 700 V high-voltage start and less than 30 mW standby power loss. DCM mode is used to reduce the switching loss, which is consistent with the standard of Energy Star EPS2.0.
出处
《现代电子技术》
北大核心
2015年第16期152-155,共4页
Modern Electronics Technique
