TPS65983B: Configuring for Alpine Ridge two port supporting only 5V at 3A on both ports

Hello Robert,

The expert covering this device is currently out of office, but will be back next week. Please expect a slight delay in response. Thank you in advance for your patience.

Hello Robert,

Each project matches a specific Intel TBT reference design. Did you implement the ATX reference design? Double check and post the reference design title.

Thanks,

Scott

Hi Scott,

I have implemented "APEX CREEK BASED ON TI REV2V65" 

Thanks You,

Rob

Hi Robert,

Only select the ATX project if you are implementing the ATX interface reference design. Else you should select the project without ATX.

The project is designed to match the base reference design. You are not required to make any changes if you have answered the GUI Tool New Project questions in a way that matches your implementation (# of ports, etc).

If you have implemented the reference design, then your device should support all project specified PDOs. TPS65983B Firmware and Configuration is specifically designed to work with the Intel TBT reference design as described.

TBT certification will ask for a Vendor Information File (VIF) used in USB-PD compliance testing. I am not familiar with the "Excel" format. The current standard for VIF files is .xml. The VIF needs to be based on your implementation. I can supply a basic VIF based on the Apex Creek Project under the understanding that you will need to review and modify the file to match your device before submitting it.

Regards,

Scott

Hi Scott,

OK, I selected new project

"Apex Creek"  -not ATX

"Supports PD2 only"

How many ports "2"

"Static charging"

The next question is, "Which port is used for >5V charging?"  On Apex creek neither port supports anything more than 5V at 3A charging.  I have no way to answer this question correctly.

Thanks,

Robert

Hi Robert,

My copy of the schematic for "APEX CREEK BASED ON TI REV2V65" shows circuits for both the External (pp_ext) and High Voltage (pp_hv) power paths. The schematic includes notes for 60+W support.

The 2 device configuration supports dynamic power allocation (Source Policy Master).

I recommend selecting PD2 and PD3 support because PD2 only devices are under sunset for USB-IF PD Compliance.

Regards,

Scott

Hi Scott,

This is a three year old design that uses the original TPS65983.  I'm trying to get the Thunderbolt certification updated because the original Alpine Ridge part is end of life, and we have lots of TPS65983 parts that we need to use up before we switch to the newer TPS65983.  This is why I select only PD2 support.

The product was originally designed to support only 5V @ 3A.  You are correct that the "APEX CREEK BASED ON TI REV2V65" schematic does allow for greater than 5V at 3A charging, but my design does not.  Is there no flexibility in the use cases for TPS65983?

Thank You,

Robert