Hi team,
I am so confused about the 9.3.6 section in datasheet. So there are 3 questions.
(1) Can TPS24770 achieve soft start itself? Or it must be achieved by external circuit? There is no detailed explanation of the soft start circuit.
(2) There is a 55uA current source in TPS24770. According to Figure 15, will this current change as the change of Vimon is there are no external soft start circuit?
If the 55uA is fixed, what does figure 15 mean?
(3) "As an example consider the usage case where the maximum inrush current (IINR,MAX) is 2A". I think the max inrush current happens at the minimum Vds. But following formula uses the max Vds, that is Vin,max. Why?
As the decrease of Vds, the inrush current will become larger and larger and finally exceed 2A.
Br,
Naizeng Wang.