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TPS6594EVM: GUI does not work with EVM

Max Chen1
Intellectual 705 points
Part Number: TPS6594EVM

Tool/software:

it shows HW connected, but no devices detected 

I used default I2C settings, but it does not connect, so I switch to SPI mode on GUI without changing jumper on EVM, connected, but no devices detected.

Can you tell me what is wrong?

I followed the GUI and EVM guides already, must be something else wrong.

Can we have a video chat to resolve this issue?

I suspected the EVM i got from digikey is defective one since I visually checked PMIC chip on the EVM, seems multiple solder bridges between pins on PMICs.

Let's have a call first.

Thanks

  • 0
    TI__Guru* 77891 points

    Hi Max,

    Can you share a photo of the EVM board so we can check all connections and also a photo of the suspect solder bridges? I would also recommend probing the pins you suspect of being shorted. 

    Regards,

    Katie

  • 0 in reply to Katie Pier
    Intellectual 705 points

    Hi katie,

    not possible to photo it, too small, just my suspect.

    can we have a call to go through the issues?

    thanks

    Max

  • 0 in reply to Max Chen1
    TI__Guru* 77891 points

    Let's please try to work the issue on the forum first - but if you have suspicion of defective board due to soldering issues and have ordered through digikey I would recommend working through their return flow to get a replacement. 

  • 0 in reply to Katie Pier
    Intellectual 705 points

    I have a close look with microscope, seems my suspect was wrong, no short.

    I contacted digikey, they would like TI support troubleshot first before returning, now what should I do about it?

    thanks

  • 0 in reply to Max Chen1
    Intellectual 705 points

    here is the message from Scalable PMIC GUI

    can you tell what cause "Duplicate device names (or) invalid name found" error?

    currently it only accepts SPI mode 

    how can I switch from SPI to I2C mode on EVM settings while user guide says EVM default is I2C mode

    see below

    any jumper incorrect?

    Thanks

  • 0 in reply to Max Chen1
    Intellectual 555 points

    Hello Katie,

    In order for DigiKey to returned to TI, the process layed out by TI was troubleshooting will need to be check by TI to customer direct and once item is deemed defective customer would reach back with confirmation of the defect from TI and we would process the return at DigiKey. Can you confirm if defective or approve return?

  • 0 in reply to Erik Brateng
    TI__Mastermind 20337 points

    Hello Max,

    Can you send me an email for a call so we can sort this out: n-mcnamara@ti.com Anything between 8-16 CST (Dallas Time) will work .

    There is a correct jumper setting, but the PMIC on the device needs to be programmed to work with SPI, as TPS65941111 is on the TPS65941111EVM, this device works as I2C and is expecting to be connected to another PMIC.

    We can go over the details in a call.

    To get started, you can keep all jumpers as they are, but

    1. Remove on of the jumpers on the J8 & J9

    2. Place that jumper on the J15 header, specifically bridge the VSYS & V3V3

    This will provide power to the PMIC, now click on this when you first get into the GUI, the register map

    Please have these on your device settings

    Confirm the first three registers as something other than 0x00 & that the EVM has connected.

    Hello Erik,

    This looks like misunderstanding on how to use the EVM, please let us try the above & a call before deeming it defective, alright.

    My apologies on the later reply.

    BR,

    Nicholas McNamara

  • 0 in reply to Nicholas McNamara
    Intellectual 705 points

    Hi Nick,

    followed your instructions, here is what I got:

    as you can see Hardware not connected, I tried a few times, it does not connect, I will set a call with you 

    Thanks

  • 0 in reply to Max Chen1
    Intellectual 705 points

    Hi Nick,

    thank you for the support, now the EVM connect the PC with I2C correctly via J47 jumper changed.

    As per discussion, 3 firmware update is needed to update PMIC

    1. for EVM alone 
    2. for TPS6594141BRWERQ1
    3. for LP876441B1RQKRQ1

    I need to evaluate the all LDOs, Bucks, Watchdog, GPIOs in PMICs

    with above, i can keep the EVM, no return.

    Thanks

  • 0 in reply to Max Chen1
    TI__Mastermind 20337 points

    Hello Max,

    I'll be sending the files via email.

    BR,

    Nicholas McNamara