Approach to the study

AN2842

10/22

Doc ID 15110 Rev 1

Figure 11. Details of current imbalance during turn-off due principally to the voltage

on the gate circuitry

The switching losses during this instance can became very high and it can cause thermal

runaway with consequent device failure (see

Figure 16). Instead, if the two V

THRESHOLD

values are similar, the current profiles assume the same aspect (see

Figure 12). During

turn-off operations, the two devices switch in the same way and at the same time, sharing

the current correctly.

Figure 12. Details of current imbalance during turn-off when the voltage on the gate

circuitry is very comparable