This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

DRV10983: Start-Up Current Setting

Part Number: DRV10983

Hi team,

I can't really understand following formula. Why there is no phase inductance L in the formula? BEMF should be variable with the position of rotator. Why the BEMF is a constant in the formula? Ilimit is the average current or peak current? 

Br,

Nison

  • Hi Naizeng,

    The voltage drop across inductor ((product of L and di/dt)) is negligible because the is negligible. BEMF is product of Speed and Kt. Speed is derivative of rotor angle. So BEMF is a function of rotor angle. Ilimit is the peak current.

    Regards,

    Vishnu.