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Reading the Votage rail from UCD9248

Other Parts Discussed in Thread: UCD9248

Hello Dears:

I bought a Zedboard (with Zynq). This board utilized 3 pcs of UCD9248.

After the access into the UCD's across the PMBus and I2C my program give me this output

any body have an idea about this results (current !!!!)?

thanks

  • It's impossible to guess what the potential issue is here just looking at the returned values.

    It could be any number of issues from:

    1. The Zedboard doesn't implement the current measurement feature of the UCD9248
    2. The Zedboard implements the feature but the hardware doesn't match the values entered for IOUT_CAL_GAIN/_OFFSET in the configuration file for the UCD9248.
    3. There's an error in your conversion of the returned value from the Linear 11 format to decimal format

    You could try hooking up the USB-to-GPIO USB Interface Adapter EVM (HPA172) to the Zedboard and use the Fusion Digital Power Designer SW, free download, to verify your results.