LED电源的短路保护电路设计  

Design of the Short-Circuit Protection Circuit in LED Power Supply

作　　者：胡春[1] 肖国龙[1] 龚正平[1] 武果[1] 郭壮龙[1] 

机构地区：[1]中科院广州电子技术有限公司,广东广州510070

出　　处：《机电工程技术》2013年第5期71-73,共3页Mechanical & Electrical Engineering Technology

摘　　要：利用PWM控制芯片普遍具有的VCC欠压关断功能,提出了短路/过流时降低VCC电压来保护LED电源的电路,设计了两种短路保护电路,成本低,可降低VCC电压或直接关断PWM控制芯片的PWM输出。In general, PWM control chip is shut down in case of VCC undervoltage. According to this feature, the short-circuit or over current protection circuit in LED power supply has been proposed in this paper. By means of reducing VCC voltage or turning off the PWM output, the two Low-cost short-circuit protection circuits have been designed.

关 键 词：PWM控制芯片 LED电源 短路保护 电路 

分 类 号：TN86[电子电信—信息与通信工程]