Hello
I need drive hdd spindle motor at different RPM to test the spindle motor's performance, Can I use DRV10975 or DRV 10983 to drive HDD spindle motor? I find some information in Kerry's blog, he once used DRV11873 to drive hdd spindle motor, here is the link. www.kerrywong.com/.../testing-of-two-three-phase-bldc-motor-drivers
But for the chip DRV11873, it do not have I2C and can't connect to computer.
For spindle motor, the R ph-CT is about 2.45 ohm, the current limit is about 1A, if u, v,w voltage is 5V, the current should be 5/2.45 ~=2A. it beyond 1A, so I need add a resistance to separate current, right?