A Family of Resonant Converters with Multi-Output Without Transformer, Single-Switch and High Frequency Operation: Analysis and Design Tool
Source abstract
Abstract
Multi-output, single-switch, hard-switched Pulse-Width Modulated (PWM) converters suffer from high switching losses, which strictly limit their power density. To significantly reduce these losses, this work proposes a novel family of non-isolated multi-output DC-DC converters based on a quasi-resonant, single-switch cell operating in the megahertz (MHz) range. Sixteen configurations are derived to enhance power density and minimize component stress. A comprehensive analysis derives the fundamental analytical expressions for operation, switching conditions, and power flow. These expressions form the basis of a design tool that facilitates parametric component selection and optimization. The developed tool calculates voltage and current stresses, alongside power losses, using RMS current analysis and user-defined parameters such as ESR and semiconductor non-idealities. Finally, experimental results from prototypes operating at approximately 1 MHz in both full-wave and half-wave modes, with step-up and step-down capabilities, confirm the accuracy of the analytical design tool and the simulation model.
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Research context
OpenAlex topics: Advanced DC-DC Converters · Advanced Power Amplifier Design · Silicon Carbide Semiconductor Technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Electronic Engineering, Computer Systems and Automation, University of Huelva, 21007 Huelva, Spain
Department of Electrical and Thermal Engineering, Design and Projects, University of Huelva, 21007 Huelva, Spain
Department of Electrical and Computer Engineering, Instituto Superior Técnico, University of Lisbon, 1049-001 Lisbon, Portugal
Instituto de Engenharia de Sistemas e Computadores, Investigação e Desenvolvimento em Lisboa, INESC-ID, Rua Alves Redol, 1000-029 Lisboa, Portugal
Funding
University of Huelva · Foundation for Science and Technology · Ministry of Universities
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