Dears,
I had some problems of USB charge controller for older phone such as iphone4s.
My customer had test TPS2540/4/6 and found the problem.
TPS2540: cannot charging iphone4s
TPS2544 and TPS2546: cannot support data exchange and charging in the same time. Of course the mode (SDP/CDP) is correct setting.
Did anyone know what is the problem?
Which solution can support iphone4s charging?
Thanks.
