Other Parts Discussed in Thread: BQ25792, TPS54531, USB2ANY, TPS25750
I am building a product that requires USB-C charging of 3 cell battery, 12.6V 4A fast charge.
I am interested in using BQ25792 + TPS25750D as shown in TIDA-050047. I would appreciate some support with the following queries:
1) For sink only application I am expecting to not need TLV75533 (U2) or TPS54531 (U3).
2) What is USB2ANY Header (J3) used for? Do I need this?
3) Should I connect JP4 in my design for TS?
4) Can you provide further information about how an external thermistor should be interfaced with BQ25792. Section 8.3.9.5.1 of the BQ25792 datasheet contains formula for calculating RT1 and RT2 however I cannot make the figures align for the example presented where RT1 and RT2 are calculated to be 5.24KΩ and 30.31KΩ.
5) If I remove TLV75533 (U2) and TPS54531 (U3) and possibly J3, will this design be sufficient for charging up to 4A?
6) Is TIDA-050054 capable of charging up to 5A?
7) Also, please provide any key PCB layout information to ensure my design will operate without issues.. Track width, isolation etc.
Many thanks