DRV8803: OCP fault

Hi Team,

The customer are using DRV8803 in one our project for low side drive to control fan and recently found the system shows fault error .Based on the datasheet tocp deglitch time 3.5microsec.

Can you help to explain on peak /rms current duration ? They are driving 2 fans in each chip with fan rated current 560mA.

Please reference the fan for peak current waveform and schematic as below. It seems the fault not trigger even peak current 2.52A for 560microseconds. Thank you.

Best regards,

Mike