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UCD3138PSFBEVM-027: Questions related to starting of the EVM

Part Number: UCD3138PSFBEVM-027
Other Parts Discussed in Thread: UCD3138CC64EVM-030


I tried starting up UCD3138PSFBEVM-027 and gave 380V, 0.4A supply but received output as 0V .

After providing supply D26 diode was giving 'red blinking signal (not stable)' and D4 (AC_GOOD) was blinking green.

I have a few questions related to it: 

1. I followed all the steps mentioned in the user manuals along with additional checksum steps. (as seen in below screenshots). 

 Kindly let me know: if there are any more steps I missed in firmware dumping process?

2. Is it particularly necessary to connect the UCD3138CC64EVM-030 to the computer via USB interface adapter while using it on UCD3138PSFBEVM-027?

3. What are the steps / additional checks that needs to be followed for proper working, so that I don't burnout/ damage the evaluation board.

 Where a user can go wrong after following the steps provided in UCD3138PSFBEVM-027 User Manual?

Note: I have tested the EVM without connecting load and checked the output voltage(0V) through multimeter. 

  • I'm not sure what is wrong.   It will probably be very helpful to connect the USB adapter to the UCD while the board is running.  Make sure that the UCD ground is at the same level as the PC you are connecting the adapter to.  The first thing to do is to run the Fusion Digital Power Studio from here:

    This should give you information on the status of the program, including any faults, as well as what the firmware thinks is happening.  Based on what you see there, you should be able to identify the issue.  

  • Hello,

    How do we completely insure if the firmware (.x0 file) is downloaded successfully and it is ready for up and running? I have used fusion digital to download firmware in controller card but after connecting the supply (380V) it is not giving any output.

    Also what does the red blinking of D26 signify. Is it ok or some issue is there?

  • When you see the DEVICE ID and all the other information, this indicates that the code has downloaded and is running.  

    I'm not sure what the blinking LED means.  Perhaps it thinks the power is good and then not good.  I don't recall ever seeing it.  If this is what is happening, you should be able to see a fault of some sort reported by the GUI.