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Video s3
    Details
    Presenter(s)
    Jiahao Zhang Headshot
    Display Name
    Jiahao Zhang
    Affiliation
    Affiliation
    Beijing University of Technology
    Country
    Author(s)
    Display Name
    Jiahao Zhang
    Affiliation
    Affiliation
    Beijing University of Technology
    Display Name
    Rami Ghannam
    Affiliation
    Affiliation
    University of Glasgow
    Display Name
    Jinwei Zhao
    Affiliation
    Affiliation
    QV Bioelectronics
    Display Name
    Yuanjie Xia
    Affiliation
    Affiliation
    University of Glasgow
    Display Name
    Chuang Wang
    Affiliation
    Affiliation
    Beijing University of Posts and Telecommunications
    Display Name
    Hadi Heidari
    Affiliation
    Affiliation
    University of Glasgow
    Abstract

    This paper presents a generalized parallel-hybrid multi-path buck converter. The proposed converter can operate in two- or four-state modes to achieve the voltage conversion ratio of D/(1+N·D) by employing N stages and a Duty cycle. Thanks to the charge redistribution in the capacitor-parallel state, both modes can automatically regulate the flying capacitor voltages to the output voltage, requiring no extra inner loops. Despite both modes having the same inductor current reduction and similar transfer functions, the two-state operation mode achieves a lower output impedance and smaller average flying capacitor discharging current. In contrast, the four-state operation mode owns the higher complex pole pair frequencies. Finally, the simulation results show that the proposed converter with two stages in either mode achieves a < 2 V output voltage at an input voltage of 12 V. The two-state operation mode improves the peak and fullload efficiency by 0.6% and 3%, respectively.

    Slides
    • Analysis and Comparison of Two- and Four-State Operation Modes of Parallel-Hybrid Multi-Path Buck DC-DC Converter (application/pdf)