Research on Control Strategy of LED Lighting Power Based on Flyback Converter
LEI Yunchuan
Abstract：The flyback converter is widely used in the field of LED lighting power supply because of its high efficiency and isolation characteristics.In view the problems of large output current ripple and slow dynamic response in the traditional control strategy,an improved current mode control strategy is investigated and proposed.The influence of control on the system stability is analyzed by establishing an accurate small signal model,and the optimal parameter combination is determined by using a multi-objective optimization method.The experimental results that the proposed control strategy maintains high efficiency over a wide load range,up to 91.2%,which is 3.2%higher than the scheme;the output current ripple is controlled within 5%,and the load step response time is shortened by 45%.
Keywords：flyback converterLED driver power supplycurrent-mode controlparameter optimization
Publication Date：2025-07-25
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：3( 69-71 )