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Open AccessArticle
Compact Switched-Inductor Power Supplies: Design Optimization with Second-Order Core Loss Model
by
Guillaume Guérin
Guillaume Guérin *
and
Gabriel A. Rincón-Mora
Gabriel A. Rincón-Mora
School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0250, USA
*
Author to whom correspondence should be addressed.
Electronics 2024, 13(15), 2977; https://doi.org/10.3390/electronics13152977 (registering DOI)
Submission received: 14 June 2024
/
Revised: 23 July 2024
/
Accepted: 25 July 2024
/
Published: 28 July 2024
Abstract
Expressing switched-inductor converter losses simply as a function of design variables is key for designers. Power losses in switched-inductor power supplies are varied in nature, and optimization schemes in the literature fail to account for all of them. Available core loss models are mostly empirical or rely on measurements or variables beyond the reach of power supply designers. Specifically, a simple core loss model is missing. This work offers complete design optimization of switched-inductor power supplies with a quadratic model of core loss that relies solely on design variables known to the designers—inductance and switching frequency (or inductor peak current). This model alleviates the burden of performing complex measurements to characterize the inductor—measurements that, moreover, require geometric data about the core, such as its size, which are often not disclosed by the manufacturer. Predicted minimum losses without approximation are within 3.2% of measured minimum losses, and predicted minimum losses with approximation are within 2.2% of measured minimum losses.
Share and Cite
MDPI and ACS Style
Guérin, G.; Rincón-Mora, G.A.
Compact Switched-Inductor Power Supplies: Design Optimization with Second-Order Core Loss Model. Electronics 2024, 13, 2977.
https://doi.org/10.3390/electronics13152977
AMA Style
Guérin G, Rincón-Mora GA.
Compact Switched-Inductor Power Supplies: Design Optimization with Second-Order Core Loss Model. Electronics. 2024; 13(15):2977.
https://doi.org/10.3390/electronics13152977
Chicago/Turabian Style
Guérin, Guillaume, and Gabriel A. Rincón-Mora.
2024. "Compact Switched-Inductor Power Supplies: Design Optimization with Second-Order Core Loss Model" Electronics 13, no. 15: 2977.
https://doi.org/10.3390/electronics13152977
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