A Novel Constant-Frequency Quasi-Resonant Converter | Zendy

Tianyu Zhu | Zendy; Yanchao Ji | Zendy; Jianze Wang | Zendy; Yiqi Liu | Zendy

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A Novel Constant-Frequency Quasi-Resonant Converter

Author(s) -

Tianyu Zhu,

Yanchao Ji,

Jianze Wang,

Yiqi Liu

Publication year - 2018

Publication title -

ieee access

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.587

H-Index - 127

ISSN - 2169-3536

DOI - 10.1109/access.2018.2854846

Subject(s) - aerospace , bioengineering , communication, networking and broadcast technologies , components, circuits, devices and systems , computing and processing , engineered materials, dielectrics and plasmas , engineering profession , fields, waves and electromagnetics , general topics for engineers , geoscience , nuclear engineering , photonics and electrooptics , power, energy and industry applications , robotics and control systems , signal processing and analysis , transportation

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.

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