DRV8841EVM: DRV8841EVM setting guidance

Yunjing Wang1

Expert 4280 points

Part Number: DRV8841EVM
Other Parts Discussed in Thread: DRV8824, DRV8841

Hi team,

My customer is using our DRV8841EVM to drive stepper motor, but the motor is totally not move with below configuration.

Would you pls kindly help suggest if any configuration of the jumper or GUI setting is wrong?

The waveform is tested in stepper motor side.

Thank you!

over 2 years ago

0 Yunjing Wang1 over 2 years ago

TI__Expert 4280 points

Hi team,

We don't understand how to use DRV8841EVM GUI to generate stepper motor control PWM? Like below index waveform of https://www.ti.com/lit/an/sloa312/sloa312.pdf.

Looking forward to your guidance. Thank you!

Best regards

Yunjing

0 Keerthivasan Kumanan over 2 years ago in reply to Yunjing Wang1

TI__Mastermind 18305 points

Hello Yunjing,

Are the waveforms from the outputs or what waveforms have you attached. I will look into this.

Best,

Keerthi

0 Yunjing Wang1 over 2 years ago in reply to Keerthivasan Kumanan

TI__Expert 4280 points

Hi Kumanan,

The waveform is output waveform. Thank you!

Best regards

Yunjing

0 Keerthivasan Kumanan over 2 years ago in reply to Yunjing Wang1

TI__Mastermind 18305 points

Hi Yunjing,

Even though the DRV8841 IC is able to drive the stepper motor, it seems like the GUI doesn't have the capability (it is made for driving brushed DC motors). If you want to use the same EVM, then the DRV8824 can replace the DRV8841 IC, and the instructions are in the user's guide.

Best,

Keerthi

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DRV8841EVM: DRV8841EVM setting guidance