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CSD95372BQ5M: output cap calculation question and Coss

Frank Rothoff
Expert 6040 points
Part Number: CSD95372BQ5M

Hi Team,

My customer want to know below details. I mentioned that he should look at the power loss graph for his Rdson/Trise/Tfall , however he still need your help on below.

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I hope you understand that it is important to have as much possible insight in the design i.c.w. TPS53x61.

-        What is the Coss of the bottom FET, this to estimate the dissipation of a potential snubber resistor or some advice – guidelines regarding the snubbers?

 

P.S. Regarding the power losses of power stages  our case is similar with the one on the graph, different switching frequency (600kHz) and Vout (1.3V-1.8V) but if no data is available I can make some assumptions and proceed. Thank you.

 

Thanks a lot again,

  • 0
    TI__Mastermind 18200 points

    Frank,

    We are pretty cautious in terms of what information we provide for our smart power stage devices, particularly in a public forum. The best way to get this answered is probably to reach out directly to the PME for this part, Jeff Sherman.