An LED driver requiring no electrolytic capacitor in the whole power conversion process is
presented. It consists of two power conversion stages. The first stage is a buck converter …

This paper presents a compact emergency lamp using light-emitting diodes (LEDs). The
goal is to develop a compact and low-cost electronic circuit to drive and control the current of …

An investigation into the effects of the structures of both LED devices and systems on the
luminous performance is presented. Single-chip and multichip LED structures and …

In recent years, light emitting diodes (LEDs) have become a viable alternative to
conventional light sources. The LEDs are now approaching performance levels that make …

In this paper, a comprehensive study is conducted on reducing the size of output filter
capacitor in an ac-dc flyback converter for driving high-brightness LED strings. To this end, a …

This work presents an efficient lighting system using high intensity light emitting diodes
(LEDs). The goal is to develop a compact and low cost electronic circuit to drive and control …

Novel RGB-LED driving system for LED backlight in LCD display have been developed and
demonstrated. The driving system consists of the non-isolation type high efficiency constant …

This paper presents a new proposal of LED lamp driver using the ZETA DC/DC converter.
The main focus is to improve the LED drive characteristcs using the DC/DC converter ZETA …

This paper describes a complete design and implementation of a low cost digital controller
for a high power LED driver. The main advantages of high efficiency LEDs are their good …

This paper describes the design and implementation of a Boost connected in cascade with a
Quadratic Buck converter, with just one active switch, used to drive a LED string for public …