Design of an electrolytic capacitor-less LED driver based on energy decoupling

The electrolytic capacitor limits the service life of the LED driver and also renders the LED's long life worthless. The LED places a great demand on its associated driver's long life. This study suggests an electrolytic capacitor-free LED drive scheme to achieve high input power factor and flicker-free operation. Compared to existing electrolytic capacitor-less LED drivers, the proposed topology to eliminate the electrolytic capacitor and the circuit construction are simple. The operation principle, detailed design procedure of the main circuit, carried on the experimental verification last.