DRV8844: nRESET und nFAULT timing

Thanks to David, but that doesn't help me ("approximately 1ms" does not define the minimum time).

I have now found the minimum time for the nReset: https://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/661979/drv8844-drv8844-nreset-pulse-width = 10µs

Therefore "-) minimum reset time for resetting all units in the DRV8844" = 10µs

The following question is still open: "-) delay time nRESET low to nFAULT high"

Kind regards

Peter

Hi Peter,

I've reached out to the systems team to see if we have this data. Please allow some time and I'll reach out when I know more.

This is also something you could measure on the DRV8844EVM. 

What's the end equipment or application?

Best,

David

Hi David

We use the DRV8844 in various applications, we are currently developing customized electronics for a customer whose use we do not know. In this application, the component must be reset automatically by its own circuit in the event of an error, intervention by a µC is not possible.

I have the DRV8844EVM on hand, so measuring is not the issue, but with these measurements I can't determine any component scatter and I also can't see what the basic design parameters of the component are.

I will then wait for your reply.

Have a nice day.

Kind regards

Peter

Many thanks for your help.

Kind regards

Peter