A Novel Constant-Frequency Quasi-Resonant Converter

Tianyu Zhu; Yanchao Ji; Jianze Wang; Yiqi Liu

doi:10.1109/ACCESS.2018.2854846

IEEE Access (Jan 2018)

A Novel Constant-Frequency Quasi-Resonant Converter

Tianyu Zhu,
Yanchao Ji,
Jianze Wang,
Yiqi Liu

Affiliations

Tianyu Zhu: ORCiD; School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin, China
Yanchao Ji: School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin, China
Jianze Wang: School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin, China
Yiqi Liu: School of Mechanical and Electrical Engineering, Northeast Forestry University, Harbin, China

DOI: https://doi.org/10.1109/ACCESS.2018.2854846
Journal volume & issue: Vol. 6
pp. 39635 – 39642

Abstract

Read online

In this paper, a new constant-frequency LL switch-capacitor (LLSC) quasi-resonant converter is proposed. Compared with the traditional frequency voltage regulation instruments, the proposed converter can effectively reduce the volume of magnetic components. A switch-control capacitor is used in the LLSC converter and adjusts the capacitor parallel anti-series MOSFET turn-on delay to change the equivalent capacitance. At constant frequency, the output voltage is adjusted by impedance adjustment. The LLSC converter can achieve the primary side MOSFET zero-voltage switching. A new design procedure is proposed for the LLSC converter. The proposed converter is experimentally by experimental results using 80-120 V and 250-W output prototype.

Published in IEEE Access

ISSN: 2169-3536 (Online)
Publisher: IEEE
Country of publisher: United States
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering
Website: https://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=6287639

About the journal

Abstract

Keywords