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EnglishActive gate drivers have been investigated in power circuits to reduce unwanted over-voltages and over-currents, whilst keeping the transients fast. Indeed, the use of such a kind of driver avoids the triggering of oscillations related to high frequency parasitic resonant circuits, which affect adversely the electro-magnetic interference delivered by power modules. However, in the case of fast power switches, the driver is working in an open-loop manner, and the modulation pattern is fixed. This paper assesses the effects of different operating conditions on the switching waveforms of an AGD-driven power transistor. More precisely, load current, input voltage and temperature variations were investigated on an open-loop active gate driver comprised in a Buck converter. Experimental results suggest that the AGD is no longer effective in damping the unwanted oscillations under a significant change of the operating conditions.
A Critical Assessment of Open-Loop Active Gate Drivers Under Variable Operating Conditions / Raviola, Erica; Fiori, Franco. - ELETTRONICO. - (2021), pp. 94-99. ((Intervento presentato al convegno 2021 IEEE International Joint EMC/SI/PI and EMC Europe Symposium tenutosi a Glasgow, UK nel 26 July-13 Aug. 2021 [10.1109/EMC/SI/PI/EMCEurope52599.2021.9559173].
| Titolo: | A Critical Assessment of Open-Loop Active Gate Drivers Under Variable Operating Conditions | |
| Autori: | ||
| Data di pubblicazione: | 2021 | |
| Abstract: | Active gate drivers have been investigated in power circuits to reduce unwanted over-voltages and... over-currents, whilst keeping the transients fast. Indeed, the use of such a kind of driver avoids the triggering of oscillations related to high frequency parasitic resonant circuits, which affect adversely the electro-magnetic interference delivered by power modules. However, in the case of fast power switches, the driver is working in an open-loop manner, and the modulation pattern is fixed. This paper assesses the effects of different operating conditions on the switching waveforms of an AGD-driven power transistor. More precisely, load current, input voltage and temperature variations were investigated on an open-loop active gate driver comprised in a Buck converter. Experimental results suggest that the AGD is no longer effective in damping the unwanted oscillations under a significant change of the operating conditions. | |
| ISBN: | 978-1-6654-4888-8 | |
| Appare nelle tipologie: | 4.1 Contributo in Atti di convegno |
File in questo prodotto:
| File | Descrizione | Tipologia | Licenza | |
|---|---|---|---|---|
| critical_assess_open_loop_agd_er_ff.pdf | articolo principale | 2a Post-print versione editoriale / Version of Record | Non Pubblico - Accesso privato/ristretto | Administrator Richiedi una copia |
| agdSensitivity_author_ER_FF.pdf | Author version of the Paper | 2. Post-print / Author's Accepted Manuscript | PUBBLICO - Tutti i diritti riservati | Visibile a tuttiVisualizza/Apri |
http://hdl.handle.net/11583/2935017
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