Exploration on Electromagnetic Compatibility Design and Evaluation Method of LED Switching Power Supply
HAN Taotao
Abstract：LED switching power supplies are widely used in the lighting field.Their high-frequency switching characteristics easily lead to electromagnetic compatibility issues,and the LED lighting industry lacks dedicated Electromagnetic Compatibility(EMC)standards.Aiming at the above problems,this paper studies the EMC design and evaluation methods of LED switching power supplies,analyzes the electromagnetic interference(EMI)sources of LED switching power supplies,and further elaborates on the design strategies from the aspects of input filter selection,primary/secondary circuit optimization,and output noise suppression.The evaluation method is mainly based on the standards of GB/T 17743 and GB 17625.1/2,and conducts analysis on conducted interference and harmonics.
Keywords：LED switching power supplyElectromagnetic Compatibility(EMC)
Publication Date：2026-01-25
Online Publishing Date：2026-03-05(First online date of this platform, not the publication date of the document)
Pages：3( 51-53 )