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Original question:

TPS65987D: TPS65987 not communicating with USB-C power adapter

TPS65987D: TPS65987 Configuration and Setup

Del Peck
Prodigy 90 points
Part Number: TPS65987D
Other Parts Discussed in Thread: TPS65987

A couple more things...

It would be nice if the TI Programming Utility didn't hard-code some of the programming loops. One of the solder connections to our FLASH chip connected to the TPS65987 wasn't making good contact and the Programming Utility just "Hung" indefinitely. A timeout loop and error message of some sort would have been very helpful.

I have a question about the ADCIN1 pin. We had it configured so that it should have configured the TPS65987 as a UFP 5V~20V in the event the FLASH didn't configure the chip. That did not happen. If the FLASH was not programmed, the TPS65987 continually reset every 750ms waiting for the FLASH. Would you explain how the ADCIN1 pin should work in a little more detail?

It looks like the FLASH chip you are using on the EVM is going end-of-life (MX25L8006EM1I-12G). Do you have a suitable replacement for this part?

Thanks for your help!

--Del

  • 0
    TI__Mastermind 30000 points

    Hi Del,

    If you do not have SPI_MISO pulled low during the initialization of the PD controller, it will continue to try and load a configuration from the flash. Even if you do not have a configuration loaded to the flash, we detect that an external flash is connected, see that SPI_MISO is not being pulled low, and load the configuration from the external EEPROM even if it is not a valid flash image. 

    The ADCIN configurations are only valid in a dead battery scenario or when a flash is not connected.  

  • 0 in reply to Adam Mc Gaffin
    Prodigy 90 points

    Hi Adam,

    Got it - thanks.

    Do you have a suitable part picked out for the FLASH you are using on the EVM since it is going end-of-life?

    --Del

  • 0 in reply to Del Peck
    TI__Mastermind 30000 points

    This is the first I have heard the flash has been EoL, so we have not looked into a replacement flash. However, a flash meeting the same requirements as the one used in the EVM should be fine