Hi Michele,
The best method to avoid the nFAULT is to understand the cause.
From your description, it could be overtemperature conditions. How long does nFAULT assert?
Do you have a good thermal connection from the DRV8842 thermal pad to the board? How large is the ground plane?
Please refer to the DRV8842EVM as an example of the connection to the thermal pad.
The best method to avoid the nFAULT is to understand the cause.
From your description, it could be overtemperature conditions. How long does nFAULT assert?
Do you have a good thermal connection from the DRV8842 thermal pad to the board? How large is the ground plane?
Please refer to the DRV8842EVM as an example of the connection to the thermal pad.