Hi, I am currently using the old "DCDC_TPS54x60_CALCTOOL_v1.xls" provided by TI to design a TPS54260 power supply. I was just wanting to confirm what the 'lf' value represents on row 137 of this calculator? It looks like it is just the ESR zero fzmod of the power stage, however the note next to this value " <= xkHz" seems to imply that there is a requirement that fzmod must be below half of the switching frequency of the power supply. Is my understanding correct for this part as that would mean that the TPS54260 would not be able to use low ESR output capacitors without violating this lf requirement.
Thanks in advance for the clarification.
