TPS65987DJEVM: TPS65987DJEVM

Hello yamamotoju,

yamamotoju said:

(1).Variable DC/DC Converter of TPS65987EVM (TPS65987 Evaluation Module) of TPS65987D: You can select 5V, 9V, 15V, 20V, but can you switch it arbitrarily after startup?

What do you mean by "switch it arbitrarily"? You can add/remove certain contracts, for example adding a 12-V contract or remove the 20-V contract. You will need to make sure your system and DC-DC can support those changes though. The EVM does not support these changes out of the box.

yamamotoju said:

(2).I'm currently arranging the TPS65987D evaluation board TPS65987EVM (TPS65987 Evaluation Module), but I don't have it yet.
Is it possible to receive the TPS65987EVM bin file (tps65987_evm_flash_image.bin) via email for study purposes?

You can generate EVM binaries and projects from the GUI that is available through ti.com. 

Once you open the 6.1.4 GUI, select "Project->New Project->TPS65987DDH->Standard->DRP, prefers power source.

Once the project loads into the gui, you can select "Binary->Save Binary->Fullflash/low region" and save a copy of the binary.

yamamotoju said:

(3).According to the User's Guide, when saving the created data by selecting Save Binary under the Binary menu, there are three types of save formats (full-flash image, low-region (minimal header), low-region (full header)), but please tell me what it is used for.

Low-region: image used when loading PD from an External Controller/MCU. Holds a single App Config (GUI settings) and base firmware image.

Minimal vs. full: Functionally the same. We changed the file format slightly to save space, with minimal being smaller than full. They have the same functionality, and either can be used for loading PD from and EC.

Full-flash: Image used when loading PD from an external flash memory. It contains two low-regions for backup purposes.

The key information is when to use which one. If you are using an EC/MCU to program the PD, use the low-region. If you are using an external flash memory, use the full-flash.

yamamotoju said:

(4).We would like to use the TPS65987D to transfer video (DisplayPort) in the future, but is it correct to understand that an external flash memory will be necessary in that case?

Sortof.

To obtain full functionality (including DisplayPort) from the TPS65987D, it is required to have some means of loading a GUI generated firmware image to the PD controller. This can be through an external flash memory, or through an external EC/MCU.  We do recommend using the external flash memory.

If you do not have one of those two options, the PD can load a default configuration from a couple option, none of which support DP alt modes.

If you are using DP alt mode, it may be best to use the TPS65987DDK which supports DP2.0.

Thanks and Regards,

Chris