Analysis and development of improved convertes for LED drivers with special focus on efficiency and dimming

Abstract

Light-emitting-diodes (LED) were first developed in 1960s. Nowadays, they have become one of the most popular lighting sources in a wide variety of applications. This is owing to the following advantages shown by LEDs: longer lifetime, higher efficacy, smaller size, fast response, robustness, reliability, and high color rendering index. The only drawback is that LEDs cannot be connected directly to the mains. Thus, it is fundamental to drive the LEDs through a current-controlled power supply. The aim of this driver is not only to drive the LEDs, but also to fulfill all required standards.