4.2.2

Overcurrent auto retry

When an overcurrent condition is detected, the device turns off HGATE and DGATE.

After retrying cooling down, the device tries again to switch them ON (auto retry function) for Tretry_attempt.

In case, after the auto retry attempt, the device recognizes OVC again, the turn OFF procedure of the drivers is

triggered again.

Maximum number of retries is retry#: once this counter is expired, if the OVC is still present, the fault is latched

and HGATE and DGATE are permanently switched off.

A toggling on WAKE input is, therefore, necessary to re-engage the device and unlatch the fault.

If one of the retry attempts is successfully concluded, the counter of the retry is reset (see Figure 11).

Figure 11. Auto retry mechanism

STPM801

Fault management

DS13990 - Rev 2

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