Research on Circuit Design of LED Street Lamps Based on Constant Current Control
TIAN Chuan
GAO Jinshi
Abstract：As a new generation of energy-saving lighting technology,LED street lamps have been widely applied in urban lighting due to their advantages such as high efficiency,energy conservation and long lifespan.The sensitivity of LED devices to current requires precise current control to ensure stable operation.Constant current control technology effectively addresses the issues of light attenuation and shortened lifespan of LEDs caused by temperature changes and voltage fluctuations by maintaining a constant output current.This research conducts an in-depth analysis of the volt-ampere characteristics and temperature drift characteristics of LED devices,establishes a complete theoretical system of constant current control,and designs a constant current drive circuit based on a switching converter.Experimental verification shows that the accuracy of the designed constant current control circuit is within±1%,and the conversion efficiency exceeds 90%,providing important technical support for the industrial application of LED street lamps.
Keywords：LED street lampsconstant current controlcircuit designpower factor correction
Publication Date：2025-12-25
Online Publishing Date：2026-01-08(First online date of this platform, not the publication date of the document)
Pages：3( 56-58 )