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TMS320F28035: DRV8323 and TMS32F28035

F.F
Genius 3095 points
Part Number: TMS320F28035
Other Parts Discussed in Thread: TMDSDOCK28035, DRV8303EVM

Dear team:

I want to use TI example project to drive BLDC motor on TMDSDOCK28035 and DRV8323RH.
I have use the HVBLDC_Sensored project and it worked well. And also does the HVBLDC_Sensorless and InsraSPIN_BLDC with DRV8303EVM.
But when I use the HVBLDC_Sensorless and InsraSPIN_BLDC project on TMDSDOCK28035 and DRV8323RH, it didn't work well. I can see SpeedRpm bouncing a lot in Expressions. The input current of the power supply also fluctuates greatly. This did not happen when using the HVBLDC_Sensored program.
I did not modify the program when using InsraSPIN_BLDC, Because I think the position of the PWM pin and the ADC pin should not be a problem if they are connected correctly.
Is there anything else I should pay attention to?
Do you have a recommended program if I use TMDSDOCK28035 with DRV8323RH?

This is a voltage feedback signal using the sensorless routine, and it is obvious that the front end is abnormal.

Best regards

  • 0
    TI__Guru** 109820 points

    Please have a look at the datasheet of DRV to ensure the control pins of DRV are connected properly to F28035 kit and the control pins are configured to the correct state, make sure the DRV device is enabled during run the motor.

    From motor control algorithm, you don't need to change anything as you mentioned.