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TPS53353: Datasheet Spec(VVFB)

Part Number: TPS53353

HI,

Does the bottom VVFB(VFB regulation voltage) in the item of Internal Reference Voltage in the data sheet mean Vref?

Best Regards,

Nishie

  •  

    While VVFB is essentially the internal reference voltage, Vref, it also includes any offset from the feedback comparator, so it more accurately reflects the regulation voltage than Vref.

    Note:  The TPS53353 uses D-CAP mode control, which regulates the valley voltage of the output ripple, not the average, and the reference voltage is increased slightly when zero-current is detected cross the low-side FET during the low-side FET on-time (Load currents below critical conduction).  If the MODE pin selects auto-skip operation, the output ripple voltage will also increase as it enters DCM operation.  This increase in Vfb(avg) and thus VOUT at light load is noted in figure 6-10