DRV421: DRV421

user5171921

Part Number: DRV421

Dear Sir,

I'm developing a current sensor based on DRV421 which test 50A primary current. from the document - SLOU409A(page 3), I found a reference design of the magnetic core and winding. would you like to share me the mechanical drawing of the magnetic core for reference, and the winding is how many turns?

Thanks!

Brian

over 6 years ago

0 Ian Williams over 6 years ago

TI__Mastermind 27715 points

Hi Brian,

Thanks for the question! Our engineers will reply when we return to the office on Monday.

Best regards,

Ian Williams
Applications Manager
Current & Magnetic Sensing

0 Javier Contreras4 over 6 years ago

TI__Mastermind 32290 points

Hello Brian,

Thank you for using the forum to get your question answered. First of all you will need to design your core and determine the winding based on a couple of key specifications.

The first tool I would uses is the DRV421 System Parameter Calculator this will help you get started in understanding the core requirements. The core inductance will come from the number of winding, Air Gap, and Area across the air gap. You can use a simulator to get the inductance and we do have some other post for easy use of FEMM which is a magnetic calculator. There are some scripts there to help you simulate the values much faster. https://e2e.ti.com/support/sensors/f/1023/t/683921

0 user6003595 over 6 years ago in reply to Javier Contreras4

Prodigy 10 points

Dear Javier,

I'm checking the discussions in the linkes, any questions will be back to you, thanks!

Best Regards,

Brian

0 Ian Williams over 6 years ago in reply to user6003595

TI__Mastermind 27715 points

Hi Brian,

It's been some time since your last post, so hopefully your issue has been resolved. I will close this thread for now. If you need more assistance, please reply to reopen it or start a new thread.

Best regards,

Ian Williams
Applications Manager
Current & Magnetic Sensing

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DRV421: DRV421