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TIDM-1000: Issue with sensing circuit on TIDM1000 and CCS during Build 1 Open Loop

Rishu Mohanka
Prodigy 20 points
Part Number: TIDM-1000

I am running through Build 1 Open Loop of the TIDM1000, as per Vienna Rectifier-Based, Three-Phase Power Factor Correction Reference Design (Rev. G), and following the steps, I've provided an input AC Voltage of 5.392 V rms, and I have an E-load at constant resistance of 500 Ohms at the output of the TIDM1000, with 10.787 V dropped across it and 0.025 A running through it. As per the software, the output total bus voltage of the Vienna Rectifier is ~12V, and I have an oscilloscope verifying that I have current running through the input and the board. The problem is that the software is still showing 0 for all these values, which makes no sense. Is there any issue with my sensing circuit? How can I fix it?

  • 0
    TI__Genius 15705 points

    Hi Rishu,

    It might be ok. If you take a look at figure 21 in the user guide, it is similar to your pic. I think you should see the value once the voltage is above 30 or 50V.

    Regards,

    Chen