Detailed description

STSPIN840

18/28

DocID031835 Rev 1

5.4

Device protections

5.4.1

Overcurrent and short-circuit protections

The device has circuitry embedded to protect each power MOSFET against the overload

and short-circuit conditions (short-circuit to ground, short-circuit to VS and short-circuit

between outputs).

When the overcurrent or the short-circuit protection is triggered the respective power stage

is disabled and the relative EN\FAULT input is forced low through the integrated open-drain

The power stage is kept disabled and the open-drain MOSFET is kept ON until the

Figure 9. Overcurrent and short-circuit protections management

The total disable time after an overcurrent event is set sizing properly the external network

connected to EN\FAULT pins (refer to Figure 10) and it is the sum of the discharging and

Equation 2