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TIDM-1000: F28004x

Ming-Hung Chen
Intellectual 390 points

Part Number: TIDM-1000
Other Parts Discussed in Thread: C2000WARE, TIDM-02008,

Hi,

  I am using "TIDM-1000-Vienna Rectifier based Three Phase PFC" with "F280049C" controlCARD by example project "F28004x" imported from C2000Ware_DigitalPower_SDK - 4.03.01.00. When I apply three-phase voltage source on the board and run the firmware, it works well. At the same time, if I power off the three-phase voltage source in couple seconds and apply it again, it doesn't work until I reset the firmware. How can I deal with this situation? I want to have PFC work once the three-phase voltage coming back the board. Thanks.

  • 0
    TI__Expert 6035 points

    The subject matter expert is out of office. Please expect a response by Thursday.

    Thanks.

  • 0 in reply to Sahil Deshpande
    TI__Expert 6020 points

    Hi Ming,

    Thats a very strange & rare issue, All our devices goes through power on reset. That means reset pin stays low until the power rails (3.3V/1.2V/HSEC_5V0 reaches their desired limits) and then RESET goes high. C2000 device resets all the time whenever power comes back.

    I assume this might be related to hardware, please refer to the Power Management Module (7.9.1) from datasheet.

    Best,

    Uttam

  • 0 in reply to Uttam Reddy Pailla
    Intellectual 390 points

    Hi Uttam,

      I may not explain this issue clearly. Here is what my experiment.

    1. Connect all necessary wires including three-phase AC source and DC output with 500 Ohm load;

    2. Plug-in 12V adapter;

    3. Download the firmware into control card;

    4. Supply 220V three-phase AC source;

    5. Run the code (by CCS);

    6. PFC boosts the voltage to 400V and it works well;

    7. Power off 220V three-phase AC source for 2 seconds but the code is still running;

    8. Power on 220V three-phase AC source again;

    9. PFC doesn't boot the voltage and it seems nonfunctional;

    10. Suspend the code and restart it (by CCS);

    11. PFC boosts the voltage to 400V and it works well.

      It seems to me that the current code can't deal with low voltage ride through or voltage interruption. How can I modify the code to solve this issue? Thanks.

    Best Regards,

    Ming

  • 0 in reply to Ming-Hung Chen
    TI__Genius 16045 points

    Hi Ming,

    As you mentioned, we didn't implement AC drop algorithm or low voltage ride through in TIDM-1000. You may want to refer to TIDM-02008 code/user guide which we implemented AC drop. I think the way using SPLL still helps on vienna rectifier. But understand there will be changes due to three phase the PFC topologies.

    Regards,

    Chen

  • 0 in reply to Chen Jiang ti
    Intellectual 390 points

    Hi Chen,

      My idea is adding the code to detecting AC drop. If the AC drop occurred, reset itself or restart the sate machine so the code will start running from beginning. However, I haven't got the idea to modify the current code. Is there any document describing the current code structure? Or any comments to modify the current code? Thanks.

    Best Regards,

    Ming

  • 0 in reply to Ming-Hung Chen
    TI__Genius 16045 points

    Hi Ming-Hung,

    Yes, as I mentioned in the previous reply. You can refer to the TIDM-02008 for the reference code and the descriptions.

    Regards,

    Chen