| Autor: |
Dai-Jie Lin, Jhih-Yuan Yang, Chih-Kang Chang, Jian-Jang Huang |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
|
| Zdroj: |
IEEE Journal of the Electron Devices Society, Vol 10, Pp 59-64 (2022) |
| Druh dokumentu: |
article |
| ISSN: |
2168-6734 |
| DOI: |
10.1109/JEDS.2021.3132429 |
| Popis: |
Surface traps on GaN-based HEMTs (high-electron-mobility transistors) usually result in the increase of channel on-resistance. It becomes worsen when short pulses are applied during high-frequency and high voltage switching. Here we present a dual-gate transistor structure to suppress the dynamic on-resistance increase. The auxiliary gate under a proper fixed voltage is able to induce additional electrons to compensate the channel carrier loss during main gate switching, leading to a lower dynamic on-resistance. In this work, we benchmarked the fundamental electrical properties of both single-gate and dual-gate HEMTs. We further extracted the dynamic electrical properties by stressing the devices with short pulses. The results suggest a significant mitigation of current collapse of a dual-gate HEMT under a proper bias applied on the auxiliary gate electrode. The physical mechanism based on the charge distribution in the channel is employed to explain the observations. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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