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DRV8876-Q1: PWM Control Mode

Hiroaki Yuyama TED
Expert 1350 points
Part Number: DRV8876-Q1
Other Parts Discussed in Thread: DRV8876

Dear, TI support Team.

I want to switch the rotation direction while inputting PWM from the microcontroller to the driver IC in "PWM control mode".

In that case, do I need to connect IN1 and IN2 to the PWM port of the microcontroller respectively?

・In the forward direction, IN2 switches 0/1 → IN2 is PWM
・In the reverse direction, IN1 switches 0/1 → IN1 is PWM

Even if you High-Z (coast) off-duty,
・In the forward direction, IN1 switches 0/1 → IN1 is PWM
・In the reverse direction, IN2 switches 0/1 → IN2 is PWM

We are aware of that, but would like advice if there is a mistake.

Attach the Excel file
DRV8876-Q1 Japanese to English.xlsx

Best Regards,
Hiroaki Yuyama

  • 0
    TI__Mastermind 24805 points

    Hi Yuyama san

    Thank you for your question.

    PWM mode can be used "Brake off duty" in your spread sheet.

    ・In the forward direction, IN2 = PWM IN1=1
    ・In the reverse direction, IN1 = PWM IN2=1

    PWM mode can be used "coast off duty" in your spread sheet.

    ・In the forward direction, IN1 = PWM IN2=0
    ・In the reverse direction, IN2 = PWM IN1=0

    regards

    Shinya Morita

  • 0 in reply to Shinya Morita
    Expert 1350 points

    HI Morita-san,

    Thank you for your Answer.
    We have replied customers about Brake off duty and coast off duty in PWM control mode.
    Also, if a customer has a question, please give us your advice.

    Best Regards,
    Hiroaki Yuyama