TPS6513x Layout Recommendation

Thomas Karwoth

Other Parts Discussed in Thread: TPS65131

Hello,

there is some uncertainity about the proper layout recommendation as found in the TPS65131 data sheet. VNEG from the pin is not connected to the circuit's output on the right bottom of the diagram on page 24. Is my understanding wrong or is there an error in this recommendation, e.g. a missing via.

Regards

Thomas

over 9 years ago

0 Thomas Karwoth over 9 years ago

Prodigy 90 points

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0 JohnTucker over 9 years ago in reply to Thomas Karwoth

TI__Guru**** 191445 points

Looks to me like there are at least 2 missing connections; VNEG should be connected to the negative output copper fill and the top of C10 and R3 should be connected to the top of R4 (VREF) per the schematic on page 11.

0 Ilona over 9 years ago in reply to JohnTucker

TI__Expert 8010 points

Yes, Thomas you are right, from this view the connection is missing between VNEG- pin and VNEG output on the right bottom.
For your layout I recommend to connect VNEG- pin (15) and VNEG on bottom and connect C10/R3 to to R4 (FBN side).

I will initiate to change the layout of the d/s.

Thank your,
Regards,
Ilona

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TPS6513x Layout Recommendation