TMCS1126-Q1: External busbar support for detecting high current

Yoshikazu Kawasaki

Part Number: TMCS1126-Q1
Other Parts Discussed in Thread: TMCS1126

Tool/software:

Hello,

I understand there are several competitors who use hall effect sensors to detect current. I also do they can support external current rail using busbar to support high current like 500A or even higher than that, but I don't see such comments in the datasheets, application notes or E2E. Can your products support external current rail by busbar? I don't see any reasons why other competitors can do, but your hall effect current sensors can't since the competitors should use the same architecture.

Best Regards,

Yoshikazu Kawasaki

1 month ago

+1 Javier Contreras4 1 month ago

TI__Mastermind 27800 points

Hello Yoshikazu,

We currently do not have an ideal solution. Our hall sensors like the TMCS1126 have a differential to remove ambient filed. Our other hall sensor are design for position sensing and have properties ideal for magnet position sensing. The other device we have that has only a few implementation due to the limiting of mechanicals required are here: https://www.ti.com/tool/DRV425-BUSBAR-EVM It is with flux-gate which requires a modification of the busbar.

0 Yoshikazu Kawasaki 1 month ago in reply to Javier Contreras4

Intellectual 575 points

Hello Javier-san,

Thank you for your comments. I don't think I'm the only one who wants to ask you to support busbar by TMCSxxx, so I hope you'll have a roadmap to cover that in the near future.

Best Regards,

Yoshikazu Kawasaki

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TMCS1126-Q1: External busbar support for detecting high current