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A high-frequency high-step-down converter with coupled inductor for low power applications

Authors :
Lanhua Zhang
Chih-Shen Yeh
Xiaonan Zhao
Jih-Sheng Lai
Source :
2017 IEEE Applied Power Electronics Conference and Exposition (APEC).
Publication Year :
2017
Publisher :
IEEE, 2017.

Abstract

This paper proposed a new topology that can achieve high-step-down conversion compared with traditional buck converter. A coupled inductor is employed to extend duty cycle which is for high-step-down applications. Soft-switching of all switches can be achieved. A prototype with 24 V input 5 V/2 A output is given to verify the circuit operation. Switching frequency is up to 1.3 MHz to minimize magnetics size. The peak efficiency can reach to 87 %.

Details

Database :
OpenAIRE
Journal :
2017 IEEE Applied Power Electronics Conference and Exposition (APEC)
Accession number :
edsair.doi...........ce29eb7e655aa80c1d1e11b75ac78be8