DRV8302-HC-C2-KIT: Inductors internal resistance

Art Mecina

Part Number: DRV8302-HC-C2-KIT
Other Parts Discussed in Thread: DRV8302, TPS54160

Hello Guys,

Good day.

In the DRV8302-HC-C2-KIT BOM file, a 140 mohms inductor rated at 1.5A were mentioned (DR74-330-R). However this Inductor is currently not available in the market. Is it okay to replace it with a 130 mOhms / 2.0A inductor.

What should they pay attention to when choosing an inductor for this design? Would it be a disadvantage to be 130 mOhms or 120 mOhms ?

Thanks and regards,

Art

over 4 years ago

0 Yanming Luo over 4 years ago

TI__Guru** 117230 points

Do you mean L1 inductor? It's for the internal buck control. What's inductance of the inductor you used? If the inductance is similar to the one in BOM, that could be OK.

+1 Matt Hein over 4 years ago in reply to Yanming Luo

TI__Mastermind 21805 points

Hello Art,

The buck integrated into the DRV8302 is a TPS54160, so feel free to use Webench designer and any content available for the TPS54160 to select possible alternate external components.

The values seem similar enough but make sure the inductance is correct.

Thanks,

Matt

0 Matt Hein over 4 years ago in reply to Matt Hein

TI__Mastermind 21805 points

Hello Art,

Do you need any further assistance here?

Thanks,

Matt

0 Art Mecina over 4 years ago in reply to Matt Hein

TI__Genius 16865 points

Hello Matt,

Apologies for the delayed response for the customer hasn't send his feedback yet. I think we can close this ticket for now. I'll just raised a new one in case they have follow-up inquiries.

Thanks,

Art

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DRV8302-HC-C2-KIT: Inductors internal resistance