AN2842

Approach to the study

Doc ID 15110 Rev 1

9/22

Figure 9.

Details of current imbalance during turn-on due principally at the voltage

on the gate circuitry

If there is some difference between the branches, the voltage across the gate pin of two

devices is different and this causes a gap current during switching. In fact, if one device

starts before the other, it brings all the current, generating imbalance. Instead, as we can

see in

Figure 10, if the conditions are the same for both devices the current imbalance is

minimal.

Figure 10. Details of current imbalance during turn-on when the voltage on the gate

circuitry is very comparable

Like the turn-on details, we can also see similar behaviors for the currents during turn-off. In

other device, which for a short time carries the total current of the system. In

Figure 11 and

Figure 12 details relative to these instances are reported.