Hi Sir,
Our customer used TPS65982 fo docking application,
But have no charger issue, the attached file is analysis data,
Could you please give me some suggest?
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Hi Sir,
Our customer used TPS65982 fo docking application,
But have no charger issue, the attached file is analysis data,
Could you please give me some suggest?
Hi Hugo, 5A contract is not happening in one of the traces attached, Is that the issue? If yes, were these traces captured using same EMCA cable? Please probe VCON in the failing case and let us know the status. After PR_Swap, the cable is not responding to SoftReset and cable discovery.
Thanks
Prajith
Hi Hugo, I don't think the capture above is during PR_Swap. Please probe VCON on both sides (NB and Dock) along with VBUS during power role swap. Cable is not responding to SoftReset after PR_Swap, I suspect that the cable is losing Vcon power for some reason. Please check this.
Thanks
Prajith
Hi Sir,
please see the attached file,
Ch1=ZBook VCONN Voltage.
CH2=TPS65982 VCONN Voltage.
Hello, As we suspected, Cable electronics is not getting VCON in the failing case. Host supplies VCON only for a short period of time and turns it off after that. Whereas, in the passing case Host provides VCON throughout. A source requires confirmation from the cable before supplying 5A. In this case, TI controller continues with 3A as it is not getting any response from the cable.
Thanks
Prajith
Hi, What Host are you using for this test? Are you seeing the issue with any other host?
Thanks
Prajith
Hi, This is host side issue and we cannot fix it from Dock side.
Thanks
Prajith