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Original question:

TPS65988EVM: schematic is hard to see

TPS65988EVM: Could not output 9v,15v on 988 EVM

April Jiang
Intellectual 830 points
Part Number: TPS65988EVM
Other Parts Discussed in Thread: LM3489, TPS65988

Hi Colleague,

         I recently debug my 988 EVM,  I find For LM3489, 988 GPIO12/13 could not output GPIO high, so 9V,15V PDO could not be negotiated successfully. 

      Not sure why this happen, below is pjt file and bin file and pd log. Please help me check this issue. Thanks.     

   TPS65988EVM_version12_virable_source__usebank1_virtual12bank0_adv4.pjt

  • 0
    TI__Mastermind 36756 points
    Hi April,

    You can load the default 988EVM image onto your EVM and it should resolve your issue. I just tested it on my EVM.
    After opening GUI version 5.13 please do the following:
    Select Device --> Re-flash EVM Firmware (Recovery)
    You can then select the FTDI as the USB to SPI adapter and select the TPS65988 EVM flash image from the EVM Recovery File dropdown.

    Thank you,
    Eric