Zero Current Detection Circuit based on Saturable Transformer Application in GaN based DC-DC Converter with Triple-Mode Switching

2023 IEEE 64th Proceedings of International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON 2023): Proceedings 2023
Kaspars Kroičs, Kristiāns Gaspersons, Martin Makar

This paper analyzes application of saturable transformer for zero current detection in GaN based converter at a switching frequency above 100 kilohertz. The design of the transformer is discussed in a simplified way, development of experimental prototype of the transformer has been given. Zero current detection (ZCD) has been tested on experimental prototype of DC-DC converter. Delay times introduced by the transformer, detection circuit and digital control system have been analyzed. The efficiency of the converter by introducing triplemode switching with ZCD circuit has been investigated. The results show that the summary delay is at least 250 nanoseconds and at such frequencies the core heats up significantly and lowers efficiency which limits the applicat

Atslēgas vārdi
DC-DC converter; GaN transistors; zero current detection; tri-state switching; saturable transformer.
DOI
10.1109/RTUCON60080.2023.10412999
Hipersaite
https://ieeexplore.ieee.org/document/10412999

Kroičs, K., Gaspersons, K., Makar, M. Zero Current Detection Circuit based on Saturable Transformer Application in GaN based DC-DC Converter with Triple-Mode Switching. No: 2023 IEEE 64th Proceedings of International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON 2023): Proceedings, Latvija, Riga, 10.-11. oktobris, 2023. Piscataway: IEEE, 2023, 1.-6.lpp. ISBN 979-8-3503-1774-9. e-ISBN 979-8-3503-1773-2. Pieejams: doi:10.1109/RTUCON60080.2023.10412999

Publikācijas valoda
English (en)