Modeling and Analysis of Four-phase Interleaved Synchronous Rectifier

[摘要] Because of the efficiency and heating problem, the single-phase BUCK converter cannot be applied to the situation of low voltage and large current. Under the same stress conditions, the multiphase parallel BUCK converter cannot only reduce the output ripple, improve the converter efficiency, but also reduce the volume of the converter. The four-phase interleaved synchronization BUCK converter is used as the research object, and the corresponding mathematical model was established to describe the instantaneous ripple of the converter. Finally, the model was built with Simulink to verify the simulation. The simulation results show that the four phase synchronous rectifier improves the output current and reduces ripple compared with single-phase.

[发布机构] College of Electrical and Information Engineering, Hubei University of Automotive Technology, Shiyan; 442002, China^1

[效力级别] 无线电电子学

[关键词] Buck converters;Converter efficiency;Model and analysis;Output current;Parallel buck converter;Research object;Stress condition;Synchronous rectifier