Electrothermal Issues in 4H-SiC 600 V Schottky Diodes in Forward Mode: Experimental Characterization, Numerical Simulations and Analytical Modelling
| Autor: | Vincenzo d'Alessandro, Rossano Carta, Andrea Irace, Luigi Merlin, Diego Raffo, Giovanni Breglio, A. Bricconi, Paolo Spirito |
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| Rok vydání: | 2006 |
| Předmět: |
Materials science
Mechanical Engineering Thermal resistance Schottky diode Forward mode Condensed Matter Physics Computational physics Characterization (materials science) Mechanics of Materials Electronic engineering General Materials Science Current density Temperature coefficient Forward current Voltage |
| Zdroj: | Materials Science Forum. :1151-1154 |
| ISSN: | 1662-9752 |
| Popis: | The electrothermal behavior of 4H-SiC 600 V Schottky diodes operated in forward mode is analyzed through numerical and analytically-based simulations. It is shown that the unexpected occurrence of voltage surges systematically detected in state-of-the-art devices is a thermally-induced effect due to the compound contribution of a) the negative temperature coefficient of the forward current at high voltages and b) the relatively high package-to-ambient thermal resistance. As a main result, it is demonstrated that the proposed approaches are suitable to accurately predict the value of a “critical” current density beyond which voltage surges may arise. |
| Databáze: | OpenAIRE |
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