A Novel Passive Offline LED Driver With Long Lifetime

This paper describes a patent-pending passive offline light-emitting diode (LED) driver that has no controlled semiconductor switches, electrolytic capacitors, auxiliary power supply, and control board. It can provide a fairly smooth current from the ac mains to drive LED strings. The new circuit ha...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on power electronics 2010-10, Vol.25 (10), p.2665-2672
Main Authors: Hui, S Y, Si Nan Li, Xue Hui Tao, Wu Chen, Ng, W M
Format: Article
Language:English
Subjects:
AC motor drives
Applied sciences
Capacitors. Resistors. Filters
Circuits
Connection and protection apparatus
dc-dc power conversion
Dielectric, amorphous and glass solid devices
digital control
Driver circuits
Drivers
Electric currents
Electrical engineering. Electrical power engineering
Electronics
electrostatic devices
Energy efficiency
Exact sciences and technology
Experiments
Illumination
lamps
LED lamps
Light emitting diodes
light sources
light-emitting diodes (LEDs)
Lighting
lighting control
Luminous efficacy
Optoelectronic devices
piezoelectric devices
plasma applications
Power capacitors
power conversion
power electronics
Power semiconductor switches
Power supplies
Power supply
power-conversion harmonics
Proposals
Reactive power
Robustness
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Semiconductors
Various equipment and components
Waste materials
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This paper describes a patent-pending passive offline light-emitting diode (LED) driver that has no controlled semiconductor switches, electrolytic capacitors, auxiliary power supply, and control board. It can provide a fairly smooth current from the ac mains to drive LED strings. The new circuit has the advantages of high input power factor, high energy efficiency and luminous efficacy, long lifetime, stable luminous output, and high robustness against extreme weather conditions. In addition, over 90% of the driver material is recyclable, leading to reduction of electronic waste. It is particularly suitable public LED lighting systems, such as road lighting systems. Experimental results based on a 50-W system are included in the paper to confirm the validity of the proposal. Due to the circuit simplicity, an energy efficiency exceeding 93.6% has been achieved.
ISSN:0885-8993
1941-0107
DOI:10.1109/TPEL.2010.2048436