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Ringelmann, Tim ; Eisentraut, Leon ; Bakran, Mark-M.:
Design of a JFET Gate Driver for Automotive Operating Conditions.
2026
Veranstaltung: ECCE Europe 2026
, 14.09.-18.09.2026
, Valencia.
(Veranstaltungsbeitrag: Kongress/Konferenz/Symposium/Tagung
,
Paper
)
Abstract
A new approach to improve automotive power converters with respect to efficiency and functional safety combines normally-on with normally-off semiconductors in a mixed halfbridge (HB) configuration. This work focuses on the use of junction field-effect transistors (JFETs) as normally-on devices and presents a dedicated gate driver architecture tailored to automotive operating conditions. The proposed driver integrates established functions such as controlled switching slopes via turn-on and -off resistances, an active miller clamp (AMC) and a DESAT protection for short-circuit detection. As its key contribution, a gate-source short-circuit circuit (SCC) mechanism is introduced, which forces the JFET into the on-state by shorting gate-source during a fault scenario. This feature is essential when JFETs are driven beyond maximum ratings, such as during active short circuit (ASC) operation. The paper explains the driver architecture, details the operating principles of each function, and presents measurements validating the concept.
Weitere Angaben
| Publikationsform: | Veranstaltungsbeitrag (Paper) |
|---|---|
| Begutachteter Beitrag: | Ja |
| Keywords: | Terms-JFET; gate driver; active short circuit |
| Institutionen der Universität: | Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Mechatronik > Lehrstuhl Mechatronik - Univ.-Prof. Dr.-Ing. Mark-M. Bakran Profilfelder > Advanced Fields > Neue Materialien Profilfelder > Emerging Fields > Energieforschung und Energietechnologie Forschungseinrichtungen > Forschungsstellen > Zentrum für Energietechnik - ZET |
| Titel an der UBT entstanden: | Ja |
| Themengebiete aus DDC: | 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften |
| Eingestellt am: | 09 Nov 2026 07:45 |
| Letzte Änderung: | 09 Nov 2026 07:45 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/100091 |