TPS549A20: Design review

Lisa Xu

Part Number: TPS549A20

Dear Ti team,

We will use TPS549A20RVER in the product(800G data switch), please help review if there is any problem with the attached design.Thanks

0 Ryan Chen 2 months ago

Hi Lisa,

What is the target FSW and RC value for this schematic?
Best,

Ryan

0 Lisa Xu 2 months ago in reply to Ryan Chen

Hi Ryan,

FSW 1000K, RC<=120uS

+1 Ryan Chen 2 months ago in reply to Lisa Xu

Hi Lisa,

Based on the calculator tool, a good target inductor for 30% target ripple to Iout is 4.3 uH. A CFF of 1000 pF is also recommended.

Best,

Ryan

+1 Lisa Xu 2 months ago in reply to Ryan Chen

Thanks Ryan

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