LED照明产品过温保护功能的设定及其特性

Setting and Characteristics of OTP Function for LED Lamps

对于驱动器内置的LED照明产品,其驱动器电子元器件的温度往往偏高,成为影响产品可靠性及寿命的最关键因素。过温保护功能可以防止功率偏高的LED照明产品在正常或异常使用时产生电子元器件温度偏高的问题,有利于提高产品的可靠性及延长寿命。详细叙述了热敏电阻方式的过温保护功能的设定方法及其特性,对需要采用过温保护功能的LED照明产品及类似产品具有指导意义。

Usually,the temperature of electronic components on internal driver of LED lamp is very high,which will impact the reliability and lifetime of LED lamps severely.OTP（Over Temperature Protection） function will help to avoid this problem of LED lamps during the normal or abnormal operation.The setting method and the characteristics of OTP function with PTC（Positive Temperature Coefficient） resistor for LED lamps are related in detail,which is important for its application in LED lamps and other electronic products.