ABB SA811F Power Supply Module

ABB SA811F Power Supply Module

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Cables

This parameter is determined using the setup in Figure 13. Cies is measured across the gate and emitter connections with collector-emitter connection shorted for AC voltage. The values of the DC voltage across the gate-emitter and collector-emitter connections are specified with the test frequency. Capacitors C1 and C2 must form an adequate bypass at the test frequency. The inductor L decouples the DC supply.

The theoretical gate drive peak current can be calculated according to equation (6), knowing the gate drive voltages and gate resistances. The gate resistor is the sum of external and internal gate drive resistance. Figure 17 shows the value for the internal resistance to be considered.

ABB SA811F Technical drawing:

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