Other Parts Discussed in Thread: BQ25792, BQ25798
I am trying to design a USBC or /and POE powered Product the USB PD has IC TPS25750DRJKR
which supports source and sink mode ..the POE power is from a POE dc-dc MODULE which provides 24 V input to one of the vin and USBC through CC is connected through other VIN
The two inputs I am planning to connect it to the BQ25792RQM .there are use cases where I may not use the battery but the System need to be powered through any one of the power path and the power path selection and priority is required .So Is it possible to implement a use case with out VBAT
If Lets say I provide Input voltage through a External regulator which through ORING diode at input can power on the REGN to 5V
but V bat is not present can the IC be active and select one of the path based on register setting ?
I mean Dead bat is supported by TPS25750DRJKR (powered though Vbus )
same way if a simple oring diode from POE and USB and LDO with diode at o/p connected to the REGN Pin of BQ25792RQM will it work without bat ?
does REGIN supports external 5V in ?