DRV8830: Questions about safety

Asael Espinoza

Part Number: DRV8830

Hi.

We use the motor driver DRV8830DGQ in some of our projects, but now we need obtain the ISO 13849-1_2015, so, if you can comment the features about safety that this component has to help us to obtain that ISO, would be great.

Or if you can recommend me some other motor drivers with similar general features but with more safety features.

Thank you.

over 3 years ago

0 Don Dapkus over 3 years ago

TI__Guru**** 189399 points

Hi, Asael,

Thanks for your question. My colleague will get back to you by the end of Monday.

+1 Pablo Armet over 3 years ago in reply to Don Dapkus

TI__Mastermind 37683 points

Hello Asael,

I'm not personally familiar with all the requirements for the ISO 13849-1:2015 standard. The DRV8830 does have protection features like over-current protection, under-voltage lockout, and thermal shutdown. Please read section 7.3.4 of the datasheet to learn more about these protection features. Let me know if you have any questions regarding the protection safety features.

These safety features of the DRV8830 are meant to protect the device and not intended to help meet any ISO standard requirements.

0 Asael Espinoza over 3 years ago in reply to Pablo Armet

Prodigy 235 points

Hi.

Thanks for the answer.

Could you tell me the MTTF (mean time to failure) of the DRV8830?

0 Pablo Armet over 3 years ago in reply to Asael Espinoza

TI__Mastermind 37683 points

Hi Asael,

Let me look up this information for you. I'll give back to you within a day.

0 Pablo Armet over 3 years ago in reply to Pablo Armet

TI__Mastermind 37683 points

Hi Asael,

You can find the MTTF, or MTBF (Mean time before fails), in the quality tab of ti.com: https://www.ti.com/quality/docs/estimator.tsp

Click on the link above and type in the part number (DRV8830DGQ) and click "search" to view the data.

0 Asael Espinoza over 3 years ago in reply to Pablo Armet

Prodigy 235 points

Hi Pablo, this info helps me, only one more question, the estimator give me the MTBF and FIT, also I need the MTTF.

I read the reliability terminology to understand the difference between MTTF and MTBF, one is used in the context of non-repairable systems and the other is used for repairable systems, so, how can I know the MTTF?

0 Pablo Armet over 3 years ago in reply to Asael Espinoza

TI__Mastermind 37683 points

Hi Asael,

I got the terminology confused in the previous reply. You are correct, MTTF is the average time before total failure and MTBF is the average time before repairable failure. It seems like we don't have the MTTF data on there. May I know why you want to know this information?