TPS25810: Compliance Fail with TPS25810 at TD4.12.2

Hi Feng,

I would recommend using an oscilloscope the measure the voltage of VBUS and the CC pins during this test. The TPS25810 should not change the state of its Rp values on the CC pins during operation. It will only change its advertised Rp when the CHG and CHG_HI pins are altered. 

Hi Adam,

Just measure the CC pins voltage as below figure. It seems also shows this result. We also change the TPS25810 IC and it also shows the same result.

Also attached the schematic, please let me know if there is any suggestion. Thanks.

Hello,

Can you also capture VBUS and IN1 in your scope capture?

You should be measuring 4 channels. DP, DM, VBUS, and IN1

The small dip in your scope capture should not be there based on my understanding