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LM5155-Q1: Some question about spec

Alan Xia
Expert 7215 points
Part Number: LM5155-Q1
Other Parts Discussed in Thread: UCC20225, LM5155

Hi team,

1 . Customer can’t find the calculation of RUVLOS and CUVLO, can you please show me how to calculate them .

2.Could you please send me the internal resistance of Gate pin just like TI UCC20225 showed below 

  • 0
    TI__Guru 52431 points

    Hi Alan,

    thank you for supporting the LM5155

    I have not seen any calculation method for RUVLOS and CUVLO - so I think best is to evaluate there values in the design with the real conditions around.

    I am not sure which value you mean - can you guide me to that location in the UCC20225 datasheet - note Figure 34 looks different in the UCC20225 datasheet .

    If you mean the R_OL this is given in the LM5155 as well but in a different format:

    Best regards,

     Stefan