TPS65266-1: Schematic review

TEJASWI ROBBI

Prodigy 60 points

Part Number: TPS65266-1

Hi,

We are using TPS65266-1 in our design to generate 1.5v, 1v & 1.8v.

Attaching the schematics. Please review and let us know if the discrete values at each output are correct.

L8, L9, & L10 value-2.2uH

Thanks,

Tejaswi

over 3 years ago

0 Ruby Li over 3 years ago

TI__Expert 7430 points

Hi Robbi

It seems good. Just one thing to confirm, what is PWRVIA1 to 9?

Ruby

0 TEJASWI ROBBI over 3 years ago in reply to Ruby Li

Prodigy 60 points

Hi Ruby,

PWRVIA1 to 9 are the thermal vias to gnd recommended in the datasheet PCD layout fig 51.

And also in the application schematic in datasheet, some capacitors were mentioned as DNI(C4,C5,C14,C15,C21,C25-Referenece fig 33). Do we need to place them as NC's in our design or not required? Pls guide.

Thanks,

Tejaswi

0 Ruby Li over 3 years ago in reply to TEJASWI ROBBI

TI__Expert 7430 points

Hi Tejaswi

I would recommend that C4, C14 and C25 to be used as the schematic you provide shows. C5, C15 and C21 can be placed as NC's, because if the phase margin is not enough in the HW due to the parasitic parameters, you can add C5, C15 and C21.

Ruby

0 TEJASWI ROBBI over 3 years ago in reply to Ruby Li

Prodigy 60 points

Hi Ruby,

I will place C5,C15 &C21 as NCs as suggested.

Thanks,

Tejaswi

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TPS65266-1: Schematic review