Characterisation and modeling of Gallium nitride power semiconductor devices dynamic on-state resistance
Gallium nitride high-electron-mobility transistors (GaN-HEMTs) suffer from trapping effects that increases device on-state resistance (RDS(on)) above its theoretical value. This increase is a function of the applied dc bias when the device is in its off state, and the time which the device is biased...
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| Format: | Article |
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IEEE
2018
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| Online Access: | https://eprints.nottingham.ac.uk/50572/ |
| _version_ | 1848798286747533312 |
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| author | Li, Ke Evans, Paul Johnson, Christopher Mark |
| author_facet | Li, Ke Evans, Paul Johnson, Christopher Mark |
| author_sort | Li, Ke |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | Gallium nitride high-electron-mobility transistors (GaN-HEMTs) suffer from trapping effects that increases device on-state resistance (RDS(on)) above its theoretical value. This increase is a function of the applied dc bias when the device is in its off state, and the time which the device is biased for. Thus, dynamic RDS(on) of different commercial GaN-HEMTs are characterised at different bias voltages in the paper by a proposed new measurement circuit. The time-constants associated with trapping and detrapping effects in the device are extracted using the proposed circuit and it is shown that variations in RDS(on) can be predicted using a series of RC circuit networks. A new methodology for integrating these RDS(on) predictions into existing gallium nitride-high-electron-mobility transistors models in standard SPICE simulators to improve model accuracy is then presented. Finally, device dynamic RDS(on) values of the model is compared and validated with the measurement when it switches in a power converter with different duty cycles and switching voltages. |
| first_indexed | 2025-11-14T20:17:22Z |
| format | Article |
| id | nottingham-50572 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T20:17:22Z |
| publishDate | 2018 |
| publisher | IEEE |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-505722020-05-04T19:50:57Z https://eprints.nottingham.ac.uk/50572/ Characterisation and modeling of Gallium nitride power semiconductor devices dynamic on-state resistance Li, Ke Evans, Paul Johnson, Christopher Mark Gallium nitride high-electron-mobility transistors (GaN-HEMTs) suffer from trapping effects that increases device on-state resistance (RDS(on)) above its theoretical value. This increase is a function of the applied dc bias when the device is in its off state, and the time which the device is biased for. Thus, dynamic RDS(on) of different commercial GaN-HEMTs are characterised at different bias voltages in the paper by a proposed new measurement circuit. The time-constants associated with trapping and detrapping effects in the device are extracted using the proposed circuit and it is shown that variations in RDS(on) can be predicted using a series of RC circuit networks. A new methodology for integrating these RDS(on) predictions into existing gallium nitride-high-electron-mobility transistors models in standard SPICE simulators to improve model accuracy is then presented. Finally, device dynamic RDS(on) values of the model is compared and validated with the measurement when it switches in a power converter with different duty cycles and switching voltages. IEEE 2018-06 Article PeerReviewed Li, Ke, Evans, Paul and Johnson, Christopher Mark (2018) Characterisation and modeling of Gallium nitride power semiconductor devices dynamic on-state resistance. IEEE Transactions on Power Electronics, 33 (6). pp. 5262-5273. ISSN 0885-8993 Dynamic on-state resistance equivalent circuit gallium nitride high-electron-mobility transistors (GaN-HEMT) power semiconductor device characterisation power semiconductor device modeling. http://ieeexplore.ieee.org/document/8039282/ doi:10.1109/TPEL.2017.2730260 doi:10.1109/TPEL.2017.2730260 |
| spellingShingle | Dynamic on-state resistance equivalent circuit gallium nitride high-electron-mobility transistors (GaN-HEMT) power semiconductor device characterisation power semiconductor device modeling. Li, Ke Evans, Paul Johnson, Christopher Mark Characterisation and modeling of Gallium nitride power semiconductor devices dynamic on-state resistance |
| title | Characterisation and modeling of Gallium nitride power semiconductor devices dynamic on-state resistance |
| title_full | Characterisation and modeling of Gallium nitride power semiconductor devices dynamic on-state resistance |
| title_fullStr | Characterisation and modeling of Gallium nitride power semiconductor devices dynamic on-state resistance |
| title_full_unstemmed | Characterisation and modeling of Gallium nitride power semiconductor devices dynamic on-state resistance |
| title_short | Characterisation and modeling of Gallium nitride power semiconductor devices dynamic on-state resistance |
| title_sort | characterisation and modeling of gallium nitride power semiconductor devices dynamic on-state resistance |
| topic | Dynamic on-state resistance equivalent circuit gallium nitride high-electron-mobility transistors (GaN-HEMT) power semiconductor device characterisation power semiconductor device modeling. |
| url | https://eprints.nottingham.ac.uk/50572/ https://eprints.nottingham.ac.uk/50572/ https://eprints.nottingham.ac.uk/50572/ |