LED lamp driver using Cuk converter

Abstract

Recently, Light Emitting Diodes (LEDs) replacement lamps become a viable alternative for incandescent lamp due to the quality of light, lamp life and environmental cost of ownership. One of the critical elements in LEDs lamp in ensuring optimal performance and long operating life is a LEDs driver. The driver performs a number of functions such as power conversion, power factor correction (PFC), voltage isolation and current regulation. The main focus of this project is to improve the LED driver characteristics for greater durability and efficiency. The driver is developed using Cuk topology. The Cuk converter is considered the optimum topology with non pulsating input current, non pulsating output current, minimum storage elements, minimum switch number, and high energy storage density using a capacitor instead of an inductor, which can operate as step up or down converter. The PIC microcontroller is used as a main controller for providing constant current to the LED. This project is designed and simulated using PSIM software and a hardware is developed to verify the simulation results.