开关电源(μPC1099)保护回路的缺陷及改进方案  

Detect and an Improved Method on Protection Circuit of the Switched Mode Power Supply(μPC1099)

作　　者：马昕霞[1] 宋明中[2] 蔡方伟[2] 

机构地区：[1]上海电力学院 [2]宝山钢铁股份有限公司,上海201900

出　　处：《电源技术应用》2007年第12期34-37,共4页Power Supply Technologles and Applications

摘　　要：介绍了集成脉冲宽度调制方式(PWM)控制器(μPC1099)的构成与原理,分析了以μPC1099集成电路组成开关电源保护电路的缺陷,提出一种保护电路改进方案,实现了保护电路的自恢复功能。The constitutes and theory of the integration pulse width modulation controller are introduced, and the defect of protection circuit of switched mode power supply is analyzed, which compose of μPC1099 integrated circuit, an Improved method of the protection circuit was proposed to realize autorecovering function of protection circuit.

关 键 词：开关电源 脉宽调制(PWM) 保护电路 

分 类 号：TN86[电子电信—信息与通信工程]