TPS25751: besides PP5V for Vconn , can it also used to offer power to the outer device?

Hi,

? ? said:

     Question1: the PP5V path support 3A current. does it intend to supply the VBUS device?

Yes, PP5V can supply VBUS at 5-V when sourcing. It can support up to 3-A. It is only for 5-V sourcing, higher voltage sourcing would go through PPHV.

? ? said:

     Question2: if TPS25751D is config as a source, like 5V/1.5A output. the power path is from PPHV to VBUS or from PP5V to VBUS? 

5-V can be sourced from both PP5V and PPHV. Only one is used at runtime, and the setting for which power path is used for 5-V is configurable in the GUI. 

PP1 corresponds to PP5V, PP3 corresponds to PPHV.

? ? said:

Question3：do have chance if  PP5V to VBUS and PPHV to VBUS  opens simultaneously？

By default, both power paths will be open (non-conducting).

If you are using PP5V for 5-V, and PPHV for higher voltages (i.e. 9-20-V), there may be a short period of time where both are closed and conducting when transferring between votlage levels.

Thanks and Regards,

Chris