Hi Katy,
I was afraid the easy way would not work.
So the next methods can be found in Table 7.
1) Overcurrent -- either short the outputs or connect the output going high to gnd or the output going low to VM. When enabled, this should disable the outputs, assert the nFAULT, and then re-enable the outputs after the Tretry time listed in the datasheet.
2) Overtemperature -- start with some current in the DRV8881 (1A for example), and add some heat in the system by slowing blowing hot air at the device. You should be able to find a point, where the nFAULT toggles between overtemperature and normal operation.
I was afraid the easy way would not work.
So the next methods can be found in Table 7.
1) Overcurrent -- either short the outputs or connect the output going high to gnd or the output going low to VM. When enabled, this should disable the outputs, assert the nFAULT, and then re-enable the outputs after the Tretry time listed in the datasheet.
2) Overtemperature -- start with some current in the DRV8881 (1A for example), and add some heat in the system by slowing blowing hot air at the device. You should be able to find a point, where the nFAULT toggles between overtemperature and normal operation.