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TPS25810EVM-745: Issues with TPS2510 EVB Charging Galaxy S22

Israel Friedland
Prodigy 15 points
Part Number: TPS25810EVM-745
Other Parts Discussed in Thread: TPS25810

Tool/software:

Hi,

I bought a TPS2510 EVB to create a charger that can charge Android devices with high power. However, I want the charger to not attempt to charge when a PC (or any DFP source) is connected. When I connect my Android phone (Galaxy S22) to the EVB, I get a message from the phone indicating something is wrong with the charger. The EVB still charges the phone, but only at 5V 1.5A instead of 3A.

My configuration is as follows:

  • All power sources (IN1, IN2, AUX) are connected to the power adapter (J2, J5, J9).
  • J8 and J11 are set to high, confirmed by scope.
  • The CC lines jumper are open with no jumper on them.
  • The J15 jumper is removed.

I also checked the cables and confirmed they work with other PD chargers. When I check on the scope, I can see that one line of the CC goes to ground and the other is about 1.6V. After 2ms, the VBUS goes from ground to 5V, and after more than 250ms (my scope can't catch it), I can see data transmission on the CC line (the one with 1.6V) but only once.

Thanks for the help!

  • 0
    TI__Mastermind 31486 points

    Hi Israel, 

    Can you double check and make sure you do not have a jumper set on J13 and J14? 

    Thanks and Regards,

    Raymond Lin

  • 0 in reply to Raymond Lin
    Prodigy 15 points

    Yes, i am sure
    .

  • 0 in reply to Israel Friedland
    TI__Mastermind 31486 points

    Hi Israel, 

    I tested on my end as well using TPS25810EVM and two separate Samsung devices (S22 Ultra and Galaxy A52) and got the same results, however it does not seem to be a TPS25810 issue. Looking at the CC pin advertisement, TPS25810 is advertising the correct current (3A) through it's Rp but the Samsung devices may require more than just Type-C power to charge efficiently. If you put J15 jumper back on for BC1.2 advertisement, you'll see fast charging appear on the Samsung devices. 

    Additionally, I tested with a separate Type-C charger where it only advertises 5V/3A through it's CC pin and got the same message on the Samsung device to check connection. To avoid this check connection message, the source has to be either PD capable or supports Samsung charging protocol which can be advertised through the D+/D- pins. 

    Let me know if you have any further questions or concerns! 

    Thanks and Regards,

    Raymond Lin