DRV8881: DRV8881 current sense

Akihisa Tamazaki

Part Number: DRV8881

Hello team,

The customer has a question about current sense useing Rsense. When the current reach to Itrip, DRV8881 start to behave in decay mode. How long does it take from reaching to Itrip until DRV8881 start decay mode. I belieave that it is too short.

Would you please advise me because the customer would like to know very much.

Best Regards,
Akihisa Tamazaki

over 7 years ago

0 Rick Duncan over 7 years ago

TI__Guru** 114905 points

Hi Tamazaki-san,

The time varies somewhat, but it is typically the time for the comparator to send the signal to the digital logic and the digital logic to signal the outputs to begin the day. I do not have the data available, but it is about 1us.

If necessary, it can be checked next week.

0 Akihisa Tamazaki over 7 years ago in reply to Rick Duncan

TI__Genius 12430 points

Rick-san,

Thank you for reply.

I see. I can answer to the customer because I think it is enough.

Best Regards,
Akihisa Tamazaki

Motor drivers

Motor drivers forum

DRV8881: DRV8881 current sense