TPS25750EVM: TPS25750 Application Customization Tool consult .

I want to buy a TPS25750EVM to do the verification ,but I have some questions . in the TPS25750EVM  block diagram  ,we use the TPS25750+BQ25792 to design the PD charging and discharging  system ,but In my design , I only want to design a PD discharging system  ,so I will use the Buck to replace the BQ25792 to generate the required voltage . when I use the the web-based tool TPS25750 Application Customization Tool ,I cannot decide to choose which configuration .

seems I should choose this as below, but the current path marked in the picture is only sink direction ,not like BQ25792 , it has bi-direction  source and sink .

so I want to know ,if I put the buck here , my choice is right or not  ,because the current path is only a sink  .and  can the system can work well ?

another question is that ,for the buck ,I will set the voltage auto-switch by PDO , can this tool set the related GPIO to accomplish it ? do you have the guide ?

pretty thanks 

Johnsin Tao：

Hi

    我觉得是可以的，因为说到底，这个芯片只是路径管理。