DRV8889-Q1: Example code for configuring reference and review the schematic

Zirui Su

Part Number: DRV8889-Q1

Hello

I have 2 support needs from you:

1. I would like to ask if you have an example code for configuring the DRV8889Q1 for reference and it will be better the example code based under S32DS IDE environment, so that we could provide it to customer for reference.

2. Customer current peripherals are used in this way below and please review it:

The daisy chain method is used, so could you please evaluate the method they are using since they worry about the dir/step may be some problems or issues( So I want to consult in advance）Thank you.

over 3 years ago

+1 Ryan Kehr over 3 years ago

TI__Guru 55555 points

Jerry,

1) We only have firmware available online for the MSP430 device that is onboard the EVM.

2) What is the concern exactly? It appears they are using external control for the STEP pin and plan to use SPI register for changing the direction. This is OK and a common use case as direction does not need to change as frequently as STEP.

Regards,

Ryan

0 Ryan Kehr over 3 years ago in reply to Ryan Kehr

TI__Guru 55555 points

Jerry,

Any update on this?

Regards,

Ryan

0 Zirui Su over 3 years ago in reply to Ryan Kehr

TI__Expert 5340 points

Hi Ryan

Yes I have discussed with customer the feasibility of the schematic and there is no more questions till now, I may help you to close this thread, thank you again.

0 Zirui Su over 3 years ago in reply to Ryan Kehr

TI__Expert 5340 points

Hi Ryan

Sorry for an urgent question about DRV8889Q1 schematic raised by customer:

Between DRV8889 and the motor, there is a direct connection on the datasheet, without some filtering components
Is it necessary to put some filtering components? Does our TI have a reference circuit that can be sent to us for a look?
For EMC, what countermeasures can reduce the risk?

Motor drivers

Motor drivers forum

DRV8889-Q1: Example code for configuring reference and review the schematic