Forrester, J., Li, L., Davidson, J. orcid.org/0000-0002-6576-3995 et al. (4 more authors) (2022) Investigation of using BSPT for ring-dot piezoelectric transformers for use in high-temperature resonant power supplies. In: IMAPSource Proceedings 2022 (HiTEN). International Conference and Exhibition on High Temperature Electronics Network (HiTEN 2022), 18-20 Jul 2022, Oxford, United Kingdom. IMAPS - International Microelectronics Assembly and Packaging Society , Oxford , pp. 125-130.
Abstract
SiC and GaN devices are gaining in popularity in both research and commercial applications. One of the many benefits of these devices is the possibility of power converter operation at temperatures in excess of that possible with Si-based devices (>200°C). A bismuth scandium lead titanate (BSPT) piezoelectric transformer is analysed for use in high temperature (up to 250°C), resonant converters using impedance spectroscopy and power converter measurements. The PT shows declining losses with temperatures during testing, translating into an improvement of 15% points in efficiency whilst more than doubling the output power across the temperature range. A peak performance of 0.7W output power and 53% efficiency at 225°C was achieved, giving comparable performance to previous work but at higher temperatures.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2022 IMAPS. |
Keywords: | High Temperature; Piezoelectric Transformers; Resonant Converters; Zero Voltage Switching |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Electronic and Electrical Engineering (Sheffield) The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Materials Science and Engineering (Sheffield) |
Funding Information: | Funder Grant number ENGINEERING AND PHYSICAL SCIENCE RESEARCH COUNCIL EP/S031421/1 Engineering and Physical Sciences Research Council EP/S031421/1 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 27 Mar 2024 11:30 |
Last Modified: | 27 Mar 2024 11:30 |
Status: | Published |
Publisher: | IMAPS - International Microelectronics Assembly and Packaging Society |
Refereed: | Yes |
Identification Number: | 10.4071/001c.89966 |
Sustainable Development Goals: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:210920 |