A novel single stage PFC topology which suit for primary side regulate LED power

【Author】

Stephen Li;

【Abstract】

This article introduced an isolated type LED lighting SMPS with PFC function which using primary side regulation(PSR),the design ably utilized a derived topology of isolated SEPIC(Single End Primary Inductor Converter)to realize both primary side CC/CV function and high PF requirement.The paper will describe how the SEPIC topology is transformed to isolated type topology,and the circuit analyze and simulation are also given for easily understanding,the real waveform and test result are shown at last.

【Keywords】

PFC;SMPS;LED;A novel single stage PFC topology which suit for primary side regulate LED power;SEPIC;

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