一种无电解电容照明LED驱动电源设计

LED本身的长寿命对其相应驱动电源的使用寿命提出了很高的要求,而电解电容严重制约了驱动电源的使用寿命,也就使LED的长寿命变得失去意义。为此,提出一种无电解电容的LED驱动电源方案,与其他无电解电容的LED驱动方案相比,提出的拓扑去掉了电解电容且电路结构简单,还可实现高输入功率因数和负载LED无闪频。论述了这种LED驱动方案的工作原理,进行了实验验证。

Design of LED driver power without electrolytic capacitor

Though the high request of long life of LED for its corresponding driver's service life,the electrolytic capacitor restricted the service life of the LED driver,making the LED long life become meaningless.A LED drive power scheme without electrolytic capacitor was proposed.Compared with other electrolytic capacitor-less LED driver,the proposed topology removed electrolytic capacitor,the circuit structure was simple,and high input power factor and flicker-free could be achieved.The operation principle was introduced,and the experimental verification was carried on.