Part Number:DRV8818
Dear Expert,
My customer have application problem about DRV8818, please kindly help.
They are using DRV8818 to drive a step motor, the spec of motor as below:
The circuit as below:
Software set to 7000pps, the motor rotate form position A to position B need 1200 pules. The problem is the motor has making acoustic noise, even the motor not running.
The current curve of one phase as below:
When the motor not running, it still making noise, the voltage curve as below:
They have tunning the VREF, but doesn’t have any improvement. Please help, Thanks!
