DRV8871: Is there any equivalent IC but for higher currend needs?

Nathan Maruch

Part Number: DRV8871

Hello there!

I'm currently working on a battle robot's motors control and I was thinking of using the DRV8871. But, since the motor we chose for the robot (a beetleweight, 1.36kg) has a stall current of 5.6A and probably peak currents that far exceed such value, the DRV8871 isn't able to properly supply it.

Therefore, I'd like to know: is there any equivalent IC to the DRV8871 that supplies higher currents or should I amplify my current signal?

Thank you all in advance!

over 7 years ago

0 Nathan Maruch over 7 years ago

Prodigy 30 points

Addendum: here is the motor we're using.

www.pololu.com/.../3204

0 Luis Riveros over 7 years ago in reply to Nathan Maruch

TI__Expert 4435 points

Hi Nathan,

If such a high current is not required, the DRV8871 can limit the current using ILIM pin. Section 7.3.3 in the datasheet talks about current regulation. I hope this helps, thank you.

0 Nathan Maruch over 7 years ago in reply to Luis Riveros

Prodigy 30 points

But I need higher, not lower currents. So, what should I do? Do I boost the DRV8871 output to my needed values or is there any IC that supplies my motor properly?

0 Luis Riveros over 7 years ago in reply to Nathan Maruch

TI__Expert 4435 points

Hi Nathan,

Have you looked at the DRV8432? That is a high current device with integrated FETs.

Another option would be to have a gate driver device and have your external FETs rated accordingly. Take a look at the portfolio we have for gate drivers here. Thank you.

Motor drivers

Motor drivers forum

DRV8871: Is there any equivalent IC but for higher currend needs?