@article{10272/25361,
year = {2025},
month = {4},
url = {https://hdl.handle.net/10272/25361},
abstract = {In order to obtain acceptable efficiencies, hard-switching techniques and the converters that implement them must operate at relatively low frequencies (tens of kilohertz), which translate into converters of large size, weight, and volume, and therefore higher cost. To improve these characteristics, this work introduces a new transformerless MHz-range DC–DC converter that provides symmetrical bipolar outputs. The developed topology uses a single grounded switch, achieves soft switching (ZVS) over a wide load range, and does not require the use of floating or isolated controllers, reducing cost, size, and complexity. The output voltages are self-regulated to maintain the same value, ensuring balanced bipolar operation. A comprehensive analysis, design, sizing, simulation, implementation and testing are provided on a 150Wprototype operating at a switching frequency of 1 MHz, with step-up and step-down capability and implemented with GaN FET. The evaluated configuration shows an efficiency close to 90% and high power density, making it suitable for compact designs in a variety of applications requiring reliable power  management and high efficiency such as lighting, electric vehicles, or auxiliary power supplies. },
organization = {This research was funded by EPIT24 Santander–UHU: Mobility grants for international
stays for PhD students at the University of Huelva and by national funds through FCT, Fundação
para a Ciência e a Tecnologia, under project UIDB/50021/2020 (DOI:10.54499/UIDB/50021/2020).
The corresponding author is enjoying an FPU grant funded by the Spanish Ministry of Universities
for training of university teaching staff in his PhD period, grant number FPU22/03537.},
publisher = {MDPI},
title = {A Novel Transformerless Soft-Switching Symmetrical Bipolar Power Converter: Analysis, Design, Simulation and Validation},
doi = {10.3390/electronics14071434},
author = {Díaz Martín, Cristian and Durán Aranda, Eladio and Alves da Silva, Fernando and André, Sergio},
}