This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TPS55340-Q1: Ccomp calculate issue in design excel spreadsheet tool

Part Number: TPS55340-Q1

Hi, Team,

In our design excel, there have two formula to calculate the Ccomp, one of it is using the fp_mod, as followed:

But in our datasheet, it looks Ccomp is related with fz. Could you help clarify it? Thanks!

  • Hi Wu JW,

    Thanks for reaching out with your question and for considering the TP55340 in your design.

    The calculation in the spreadsheet the value of CCOMP that sets the error amplifier zero (fz) at the low frequency modulation pole (fp_mod). By doing this the zero cancels out the pole. This is a good way to set the loop compensation zero location and the calculation is correct.