Other Parts Discussed in Thread: DRV10983, DRV10964
Hello,
I am trying to run a hard drive motor with the DRV10983EVM, but I am running into Lock Code 0x4 and BEMF Abnormal errors.
The Kt is calculated as follows, where 4200 rpm is the design speed of the motor:
4200 rpm / (60/ 6 pole pairs)= 420 Hz
3.3 V / 420 Hz = 7.87 mV/Hz
The motor makes some clicking sounds while spinning sporadically in both directions and then spins in one direction for a second before stopping for a few seconds and beginning the cycle again. Any ideas what may be going on?
Additionally, I saw on another form that DRV10983Q1 can go down to 6.2V operation, the motor we are using runs on 3.3V - is it possible for the DRV10983 to run this motor at 3.3V? If not, could a voltage divider work to step the voltage down from the ESC for the motor? Thank you very much for your help.
Best,
Abhay
