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TIEVM-HV-1PH-DCAC: Board not working

Alfred Logico
Expert 5420 points

Part Number: TIEVM-HV-1PH-DCAC

Hi Team, 

A customer of mine requested our TIEVM-HV-1PH-DCAC board. From receiving the board, the board cannot power up on their workbench. Can you please help answer their concerns below:

1. For software issue, How to setup for this?

Do you have any good solutions for the problem of DEBUG errors? 

2. According to the setting in chapter 3.1.2.3.1.5, EPwm1Regs.TZFLG. cannot be set to zero, The boardStatus not set to boardStatus_NoFault.boardStatus is always in the state of boardSTatus_OverCurrentTrip, and there is no input voltage at this time. When the input voltage is 50V, there is no output waveform. When the input voltage rises to 380V, guiVbus does not update 380V, and there is no output voltage. Can you help me with this question? 

Thanks! 

BR,

Alfred

  • 0
    TI__Expert 5725 points

    Hello Alfred

    1. For the first issue, it seems the compiler is not updated. Please ask customer to install latest version of the CCS which automatically installs the updated compiler.

    2. The second issue is design specific. I have not started working on DC-AC, voltage source mode yet but I have plan to work on similar design (Tesseract DC-AC, voltage source) in the month of June. When I will start working, I should be able to resolve your issue. I will update you.

    Thanks

    Amir

  • 0 in reply to Amir Hussain
    TI__Expert 5420 points

    Hi Amir,

    Customer was able to resolve the first issue. Second issue, is there anyone who can help support this since this is an EVM? Can anyone from the BU support and check what is causing this issue on their side?

    Thanks!

    BR,

    Alfred

  • 0 in reply to Alfred Logico
    TI__Expert 5725 points

    Hello Alfred

    There is something wrong with the current sensing that I can see from the expression window. I am sure the actual current is 0 but sensed current is 15.6A which is the maximum current. This is the reason OCP trips the EPWM. I can think of two possible reasons

    Can you check

    the control card is properly connected to the main board?

    the biased power supply is provided correctly?

    Thanks

    Amir