多功能开关电源保护电路的设计与实现  

The Design of the Multifunctional Protection Circuit to the Switching Power

作　　者：何玲[1] 吴恒玉[2] 王志刚 

机构地区：[1]广东水利电力职业技术学院,广东广州510925 [2]海南软件职业技术学院,海南琼海517400 [3]深圳市大族激光科技股份有限公司,广东深圳518057

出　　处：《电子工业专用设备》2015年第4期7-13,共7页Equipment for Electronic Products Manufacturing

基　　金：2014年海南省自然科学基金项目614239;2014年海南省高等学校教育教学改革研究项目HNJG2014-78

摘　　要：由于开关电源中控制电路比较复杂,晶体管和集成器件耐受电、热冲击的能力较差,为了使开关电源能在恶劣环境及突发故障状况下避开因超规格条件引起的故障,提出了可靠实用的保护电路,并分别对电路的工作原理进行了详尽介绍和分析;设计者可以根据自身电源选择保护形式,确保开关电源和负载在异常条件下不被损坏。Because the switching power supply control circuit is more complex, the ability of the transistor and the integrated device tolerance electricity, less heat shocks, in order to make the switching power supply can avoid the fault caused by ultra specification conditions in harsh environment and sudden failure, this paper puts forward protective circuit is reliable and practical, and were on the circuit principle of work in detail introduction and analysis. The designer can choose according to their own power supply form of protection, to ensure that the switch power supply and load under abnormal conditions are not damaged.

关 键 词：开关电源 保护电路 欠压保护 过压保护 过温保护 

分 类 号：TN86[电子电信—信息与通信工程]