TPS65987DJEVM: TPS65987

Is it possible to get the project file (.pjt) for this default project?
I can load that project and then use Binary -> Flash from current project command to program the flash.
I want to make USB-C on EVM board like a laptop USB-C as mentioned in the EVM documentation.

Thanks

Hello,

Please see the project file from Project->New Project->TPS65987DDH->Standard-> DRP, prefers power source.

Regards,
Chris

I can flash the binary, but when I connect USB-C power bank to EVM, it doesn't negotiate to 20V operation.
Power bank works fine, when I connect to external USB-C power supply.

Hello,

    Please confirm that the project file does include the 20V contract (Transmit Source Capabilities).  Is any voltage negotiated?

Regards,
Chris

20V source is included. But it sources 5V only.

Thanks.

Hello,

Do you have the ability to connect a PD analyzer to see what is advertised and requested for a power source?  If not, then can you connect a thumb drive to confirm if the 5V is being supplied by the EVM?  

Regards,

Chris

Hi Chris,

When I connect the thumb drive I do get 5V at Vbus TP.

This morning I reprogrammed my EVM as you recommended. Now when I connect my EVM to USB-C power bank, I do get 20V at the Vbus. I placed a USB-C power meter between EVM and the power bank. The direction of the power is from power bank to EVM. It should be other way. In my setup I made # of sink PDOs to 0. EVM should be sourcing but looks like its sinking. The J4 jumper is between pins 1 & 2 (default) and J5 jumper is between pins 2 & 3 (default). None of the source LEDs (5/9/12/20V) is ON. One of them should be ON, if EVM is sourcing. 

Then I tried the advanced set up and did same exercise as above. I got the same results.

How can I get EVM to work in the source mode only?
BYW, I tested my power bank with 12V USB-C car battery charger and it works properly. I get 11V @ 1.67A on the power meter and the direction of the power is from car battery charger to power bank.

Thanks

Kiran

Hello,

Can you change the Port Configuration from DRP to UFP and remove Process Swap to DFP in the Port Control?

Regards,
Chris

Hi Chris,

I tried to do as per your instructions, but now when I do "Flash from current file", it erases the memory and completes the programming. But I got an error, "SPI Flash to device failed verification". I power cycled the EVM and my laptop, but still the same issue. Now when I connect EVM to the power bank, Vbus is at 5V and direction is from power bank to EVM.

Looks like I will have to purchase a new EVM.

Thanks

Kiran

Hello,

Sorry to hear that.  Please let me know if you have any issues getting a new EVM.

Chris

Hi Chris,

EVM is working properly today. Last time you asked to do following;
Can you change the Port Configuration from DRP to UFP and remove Process Swap to DFP in the Port Control?

I managed to change from DRP to UFP. But I don't see Process Swap to DFP in the Port Control.
I see following;

Please recommend appropriate location.

Thanks

Kiran

Hello,

Sorry, wrong register.  It is the Port Configuration register:

Regards,

Chris

Hi Chris,

We tried your recommendation, but it did not work with the power bank.
Then I connected to our End Unit and it worked for few seconds and then it switches between 5V and 20V sourcing. By looking at the EZ-PD USB-C analyser, we find that EVM keeps on resetting every few seconds.

Other issue is with my laptop flashing is an issue. I can't flash the binary on the EVM and program flash from current project is not reliable. It works some days and doesn't work some days. I reinstalled the GUI several times, but same issue. My co-worker used the same program to install GUI and he has no problem. He can even flash the binary. What could be wrong with my laptop?
Thanks

Kiran

Hello,

For the resetting issue, can you capture the PD log with the EZ-PD analyzer?  I am looking for a request from the power bank which the EVM rejects or some other timeout in which the EVM (or the power bank) issues are hard reset.

A couple of things to check with your setup.  

(1) What is the driver being used on your computer and is it the same as what your co-worker is using?

(2) What comm ports come up in the device manager when you are attempting to program? Can you remove other devices so that only the EVM is present (if applicable)? 

Regards,

Chris