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TPS65233's pulse skipping mode

Tsuguhiko Asai
Expert 1260 points
Other Parts Discussed in Thread: TPS65233

Dear All,

Would you tell us min-on-time of TPS65233's internal High-side-FET?

Would you tell me the details about pulse-skipping mode of TPS65233?

(are there the documents?)

- The condition of to enter this Mode

- The condition of to go out this Mode

  • 0
    TI__Guru**** 191445 points

    As you probably know, there is no information available on those topics in the datasheet.  let me see what I can find out.  It may take some time.  Please be patient.

  • 0 in reply to JohnTucker
    TI__Guru**** 191445 points

    For boost converter, TPS65233 only integrates the Low-side-FET. LDO integrates the FET which is always on.  If you mean Low-side-FET in Boost converter, the min-on-time is 150ns.

    The converter enters PSM mode when inductor VCOMP(Internal)<0.45V.  There is no current hysteresis for PSM mode.  So it exits PSM mode when VCOMP rises back above 0.45 V.