Hi all
I have this question for the TPS25740BEVM, here is what I am doing:
- configure the board to 18W:
- Psel on position P4 -> 36W, PCTRL shunt installed -> PMAX = PSEL/2
- keep default configuration: HIPWR on H2 position -> 5V, 9V, 15V, 20V
Source cap is advertised as expected, with 18W Max power:
and iPad pro (last gen) select Pos 3 and charges with 18W, all OK.
Since I know my power supply will limit available voltage to max 15V, I modify the configuration such that
- HIPWR on position H4 -> 5V, 9V, 12V, 15V and IMAX = 3A
Source cap is advertised as expected, with 18W Max power and expected voltages modified:
But It seems the iPad Pro cannot get to negotiate a power:
And what I noticed is that as soon as the iPad Pro makes a request for a higher power contract, there's a hard reset occuring and the cycle starts over:
Is that a bad configuration on my side or some sort of incompatibility?
I am looking forward to your feedback.
Best regards
Ueli