TPS54295: Power Section Review

Dineshkumar R

Part Number: TPS54295

Hi,

Could you please support me to review power section. As per current design, Dual buck converter is used. output-1 (3.3V@1.25A) is used to source FPGA I/O voltage. Output-2 (1.2@1A) is used to source FPGA core supply voltage. Kindly provide your comments on Decaps.

over 3 years ago

0 Zhao Ma over 3 years ago

TI__Genius 15135 points

Hi, Sir

The schematic is good to me.

0 Tahar Allag over 3 years ago

TI__Mastermind 32400 points

Hello,

the overall SCH is good, can you please consider adding CFF for the 3.3V rail. According to the datasheet table 2, 6 to 22pF is recommended.

Thanks

Tahar

0 Tahar Allag over 3 years ago in reply to Tahar Allag

TI__Mastermind 32400 points

5 to 22pF to be accurate. it is optional but For higher output voltages at or above 1.8 V, additional phase boost can help by adding a feed forward capacitor (CFF) in parallel with the pull up of the feedback network.

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TPS54295: Power Section Review