Protection Concepts for Rugged IGBT Modules | ||||||
Author(s) | S. Konrad; I. Zverev | |||||
Abstract | A reliable protection concept is an important component in any design of the power conversion system. The classification of the critical operation cases, that can lead to the destruction of the power semiconductor, is presented. On the basis of the measured waveform the short circuit type II is pointed out as the worst fault case. With the consideration to the main emphasizes of integration very reliable and good integrable protection circuits are introduced. A new two-stages approach to control the gate-emitter voltage and a switchable gate resistane control are the special features of the protection concept. The comparison of the forward and short-circuit behaviour of the IGBTs with different channel lengths shows the trade-off between the power losses and the rugedness. |
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Type | Members Only | |||||
Date | Last modified 2006-04-18 by System | |||||
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