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UCC2813-1: Datasheet clarification

lev nemets1
Intellectual 475 points

Part Number: UCC2813-1

Hello. Datasheet has parameters for "Current sense"(page 6).  Which element on the Block diagram (page 9) do these parameters refer to?

Thanks

  • 0
    TI__Guru 74075 points

    Hi,

    1)

    2)

    3)

    4)

    (5)

    6)

  • 0 in reply to Hong Huang
    Intellectual 475 points

    Thanks for the quick response. Number 1) is still unclear. In the other answers you have highlighted some components in the diagram, but in this answer you have not indicated any components. I suspect that this parameter is related to the resistive divider coefficient, as shown in Figure 25. Please correct me if I'm wrong. Thank. Lev

  • 0 in reply to lev nemets1
    TI__Guru 74075 points

    Hi,

    1) The gain is the ratio of COMP pin voltage increase over CS pin voltage increase

    For example, when delta_Vcs = 0.8V, A = 1.65V then delta_Vcomp = A x delta_Vcs = 1.65 x 0.8V = 1.32V, typically.

    On the others, for example, 2) means that zener diode in red circled is for this specs with min typ and max.

    I am not sure which one you do not understand - each red circled is based on the corresponding specs table row.