DRV425: DRV425 Differential mode

Johannes Gießibl

Part Number: DRV425

Tool/software:

I want to connect multiple DRV425 like described in the busbar application note but more than just one pair. Is there a way to do this? For example 4 DRV425 where 2 build one pair in differential mode and the second pair as well in differential mode and then I want to combine them as an average.

2 months ago

0 Joe Vanacore 2 months ago

TI__Genius 17280 points

Hello Johannes,

Thank you for your post.

I think this post is similar in terms of combining outputs:(+) DRV425: Multiple DRV425RTJR in a single PCB - Sensors forum - Sensors - TI E2E support forums

I would lean towards using downstream processing if you have that available for combining the outputs.

However, you can use the output of one DRV425 as the reference input to the other. You must size the shunt resistor so that the maximum voltage output of the first DRV is at most 2.5V and has its reference pin tied to GND.

I hope this helps,

Joe