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Original question:

DRV8889-Q1EVM: Stepper Motor Drive with SPI and DIR/STEP Pin

DRV8889-Q1: DRV8889 work with Nidec's motor

Amelie Zheng
Genius 10865 points
Part Number: DRV8889-Q1

Hi Team,

Actually one of my customer now consider to use DRV8889-Q1 in Head-up Display application but now meet some problem.

"Sensorless Stall Detection With the DRV8889-Q1" is application note about DRV8889 Stall Detection. According to the application note, the stall detection is affected by the resistance of the motor coil and the working current.

However when looking at customer’s Nidec motor , the motor which CHUD case used in application note is very different from customer’s Nidec’s motor.

May I ask whether DRV8889 can pair with Nidec’s motor to achieve accuracy Stall Detection based on Nidec’s motor parameters?

  • 0
    TI__Guru 56650 points

    Amelie,

    DRV8889 was already adopted in HUD application by customers.

    Would you send me the Nidec motor spec? What is the motor operating speed?

    If the DRV8889 winding resistance is below 8ohm, the Torque_count number could overcome the high winding resistance error at a reasonable motor operating speed and the stall detection works well. The winding resistance is even 70-80ohm in some valve applications, the stall detection can also work properly with a low winding current setting.