Other Parts Discussed in Thread: TMUXHS4212,
Hello team,
My customer is considering to use TPS25750 for PD controller and TMUXHS4212 for the flip of type-C USB super speed signal as below. And the mode of TPS25750 is Power Source and power Sink as below.
In above situation, the customer has some questions.
Q1) The start condition of TPS25750 is power off. Then the customer wants to run TPS25750 in Sink mode to obtain 15V/3A when connected to a USB host through a Type-C cable. After that 3.3V (VIN_3V3) and 5V (PP5V) will be make From the 15V/3A obtained with DC-DC converters.
After all system power is up and stable, the 15V power supply is switched to another power supply, and in some operating modes the TPS25750 is attempting to operate as source mode of 5V source from PP5V.
The Customer is thinking about this. Is it OK? If there are any points to be careful, please give us advice.
Q2) The customer will be using the TMUXHS4212, but the customer is considering which is connecting TMUXHS4212 3.3 V power supply, VIN_3V3 or LDO3.3V .would you please advise?
It's a complicated question, but I'd like to ask you some advice. Your help is appreciated.
Best Regards,
Akihisa Tamazaki