RMIT University
Browse

Design and modelling of buck regulators driving loads with complex parasitics

journal contribution
posted on 2024-11-02, 18:45 authored by John Pillans
Switching regulators improve power efficiency and reduce cost of electronic devices. Continued advances in the performance of components have outpaced the models used for their analysis and design. Physical limits of the parts and their arrangement introduce nonideal parasitic effects that can no longer be ignored. This article introduces an extensible frequency domain model of buck regulators that can capture parasitic effects of arbitrary complexity. Such models are derived for both continuous and discontinuous conduction modes of peak current mode controllers. The proposed models are shown to be accurate when compared to other methods, while having lower computational cost. Numerical optimization is applied to design systems using the increased complexity models. Cost functions are developed, and shown to produce improved designs when compared to existing published examples. Experimental measurement finds the models accurately predict the performance of implemented designs. Additional parasitic elements are added to the model, showing improved fit to measured results, demonstrating the extensibility and accuracy possible.

History

Journal

IEEE Transactions on Power Electronics

Volume

37

Issue

1

Start page

162

End page

169

Total pages

8

Publisher

IEEE

Place published

United States

Language

English

Copyright

© 2021 IEEE

Former Identifier

2006112445

Esploro creation date

2022-02-24

Usage metrics

    Scholarly Works

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC