The over-voltage circuit of IGBT insulated gate dual-pole transistor grid

Published:2011/6/20 1:14:00 Author:Seven | Keyword: over-voltage, insulated gate, transistor grid | From:SeekIC

The reason of IGBT grid over-voltage:1. The static electricities assemble at the grid and cause over-voltage; 2. The capacitor Miller effect cause the grid over-voltage. To prevent IGBT grid-emitter from being over-voltage, we should connect a several KΩ resistor between the grid and emitter of IGBT, see as the figure. The resistor should be close to the grid and the emitter.



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