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DRV10975: drv10975 GUI

Hope Chen
Expert 1030 points
Part Number: DRV10975

Below is a summary of the problem statement:

1, Application requirements:

  • Refrigerator circ fan
  • 12V, 0.15A, up to 2W, 1300rpm
  • 5-16V operation (speed regulation)
  • <35dB acoustic noise with load
  • 3.5s restart after entering stall (lock)
  • FG output
  • 12-slot / 8-pole motor

2, Question

    A, are phase resistance, KT and # of poles the only parameters that need to be programmed?

    B,  if Rph_CT is 20ohm, can DRV10975 work for the motor?

  • 0
    TI__Guru** 114905 points

    Hi Hope,

    Our experts have been contacted and should reply soon.

  • 0 in reply to Rick Duncan
    TI__Expert 3010 points

    Hi Hope.

    Please see my response below

    • Refrigerator circ fan
    • 12V, 0.15A, up to 2W, 1300rpm

    [KS] DRV10975 should be able to meet this spec

    • 5-16V operation (speed regulation)

    [KS] DRV10975 can operate between ~6 v to 16 V. Please see UVLO spec in datasheet for rising and falling edge.

    • <35dB acoustic noise with load

    [KS] DRv10975 operates in true 180° sinusoidal mode, so it shouldn’t be problem.

    • 3.5s restart after entering stall (lock)

    [KS] DRv10975 restarts in 5 sec after entering stall.

    • FG output

    [KS] FG output can be configured as per requirements.

    • 12-slot / 8-pole motor
    • Question 1: are phase resistance, KT and # of poles the only parameters that need to be programmed?

    [KS] Configuring Kt and resistance is good starting point to get motor spinning. Other parameters like startup setting and T control advance might needs to optimize later to improve performance.

    • Question 2: if Rph_CT is 20ohm, can DRV10975 work for the motor?

    [KS] Maximum resistance that can be configured using DRV10975 is 14.1 ohms, so you can try configuring 14.1 and see if its spin motor.

    Regards,

    Krushal