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一种应用于LED灯的电源电路

申请公布号:CN205726574U

申请号:CN201620626055.8

申请日期:2016.06.22

申请公布日期:2016.11.23

申请人:
赛尔富电子有限公司

发明人:王其明;吴广华

分类号:H05B33/08(2006.01)I

主分类号:H05B33/08(2006.01)I

地址:315103 浙江省宁波市国家高新区聚贤路1345号

摘要:一种应用于LED灯的电源电路,其包括一个LED电源前级电路,一个负载,一个短路保护开关模块,一个电路检测模块,以及一个控制开关模块。所述短路保护开关模块包括一个用于通断所述负载的供电的负载开关。所述电路检测模块包括一个比较检测单元,以及一个延时单元。所述比较检测单元将所述LED电源前级电路的输出电压与预设基准电压比较后输出控制信号。所述延时单元根据比较检测单元的控制信号在延后一定时间后输出开关控制信号。所述控制开关模块根据延时单元输出的开关控制信号通断所述负载开关进而通断所述负载的供电。所述电源电路可以实现在所述负载短路时关断整个电路,也可以保护负载开关不至于被烧毁,从而可以保护整个电源不失效。

主权项:一种应用于LED灯的电源电路,所述电源电路包括一个LED电源前级电路,以及一个电性连接在所述LED电源前级电路的输出端的负载,其特征在于:所述电源电路还包括一个电性连接在所述LED电源前级电路与负载之间的短路保护开关模块,一个与所述短路保护开关模块电性连接的电路检测模块,以及一个根据所述电路检测模块的输出信号控制所述短路保护开关模块通断的控制开关模块,所述短路保护开关模块包括一个用于通断所述负载的供电的负载开关,所述电路检测模块包括一个比较检测单元,以及一个延时单元,所述比较检测单元将所述LED电源前级电路的输出电压与预设基准电压比较后输出控制信号,所述延时单元根据比较检测单元的控制信号在延后一定时间后输出开关控制信号,所述控制开关模块根据延时单元输出的开关控制信号通断所述负载开关进而通断所述负载的供电。

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