LMG5200POLEVM-10: LMG5200 reference design exposed copper reason

Catalin Muntean

Part Number: LMG5200POLEVM-10
Other Parts Discussed in Thread: LMG5200

Hello,

can you tell me the reason behind leaving exposed copper areas in the reference design TIDUC72A that is using the LMG5200.

See link: https://www.ti.com/lit/ug/tiduc72a/tiduc72a.pdf?ts=1615651243004&ref_url=https%253A%252F%252Fwww.google.com%252F

Thank you !

over 3 years ago

0 Yichi Zhang. over 3 years ago

TI__Genius 16390 points

Hello Catalin,

Would you mind taking a screenshot of the exposed copper area you are referring to?

Thanks!

0 Catalin Muntean over 3 years ago in reply to Yichi Zhang.

Intellectual 280 points

Hello Yichi,

yes, it is marked in red boxes.

Regards !

0 Yichi Zhang. over 3 years ago in reply to Catalin Muntean

TI__Genius 16390 points

Hi Catalin,

I see your point. Let me double check with the team and will get back to you!

Regards,

0 Catalin Muntean over 3 years ago in reply to Yichi Zhang.

Intellectual 280 points

Thank you for the help !

+1 Yichi Zhang. over 3 years ago in reply to Catalin Muntean

TI__Genius 16390 points

Hi Catalin,

The exposed area should be left for attaching heatsink and for thermal dissipation. Please let us know if you have further questions!

Regards,

Yichi

0 Catalin Muntean over 3 years ago in reply to Yichi Zhang.

Intellectual 280 points

Hi Yichi,

I thought it was for increasing the copper thickness exteranlly during e.g. reflow, but I found it strage that the Vin and GND exposed parts where not all the way to the input connector, as it in Vout.

That solves my question.

Best regards,

Catalin

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LMG5200POLEVM-10: LMG5200 reference design exposed copper reason