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WEBENCH® Tools/LM5001: question on additional components on design output from Webench

Paul Schoenke
Expert 1375 points
Part Number: LM5001

Tool/software: WEBENCH® Design Tools

Hello:

I did a Webench designer design with the LM5001, it is attached.  I'm wondering what these components are for in the project / what function do they serve?

D2, D3, Cb, and Rb 

Any feedback or input is welcomed and appreciated! 

Thanks again!

Paul

TI LM5001 webench_design_3758011_13_437671152.pdf

  • 0
    TI__Mastermind 34231 points
    Hi Paul,

    On the page 13 of LM5001 datasheet, it has the detailed description about soft-start. D2 is used for soft-start. During shutdown, D3 will discharges the SS capacitor.
    Rb and Cb is the RC snubber circuit that can suppress voltage spikes and damp the ringing.

    Regards,
    Zack