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TMDSSOLARPEXKIT: Buzzing sound when enabling silicon real-time

Muhammad Faizal Sofyan
Prodigy 50 points
Other Parts Discussed in Thread: CONTROLSUITE

Hello Everyone,

I've successfully tried the demo  "PV_inverter_F2803X and PV_BatteryCharging_F2803X" from the ControlSuite using TMDSSOLARPEXKIT, so I'm trying to combine both of them for Off-Grid Inverter Application. After I debugged and ran the program on the kit, The kit was making a buzzing sound when I tried to enable the silicon real-time. I immediately stopped the program and turned-off the kit. Because I was wondering if there is something broken, I tried to run only the demo PV_inverter_F2803X, and now the kit is not working (no current flow to the inverter). Is the kit now broken? or is it normally happen if the code is not correct?

  • 0
    TI__Mastermind 43730 points
    If you are trying to run the code that was previously working on a previously working board, I feel there has been damage to the board. You will need to go and test individual power stage in open loop to locate the issue and then replace some components.

    Try inspecting the board and see if there is visible damage, Next you can also check the FETs with multimeter to see which one is damaged
  • 0 in reply to Manish Bhardwaj
    Prodigy 50 points

    Hi Manish,

    Is possible that the relay is the problem? since I realized that the source of the buzzing sound was from the relay box. Also, when I tried to use open loop program, the program could not find the target. Error Message: 'Could not read 0x00008320@Data: target is not connected'. The error happened after I ran the program and immediately after the switching sound happened

  • 0 in reply to Muhammad Faizal Sofyan
    TI__Mastermind 43730 points

    1. You could depopulate the relay and short them out, if need be if you suspect that is the issue. 

    2. The error means that the JTAG lost connection, this could happen if there was a surge event that caused the power on the MCU rail to drop and hence the JTAG loss. Does this happen now as well? or you are able to at least connect to the processor. 

  • 0 in reply to Manish Bhardwaj
    Prodigy 50 points
    The error happened after I ran and enabled the silicon real-time. After I debugged and ran the program, the expressions were changing normally for a few seconds, and suddenly the message error appeared. It's still happening now, every time I debug and run the program. How do I prevent the power of the MCU raid from dropping?
  • 0 in reply to Muhammad Faizal Sofyan
    TI__Mastermind 43730 points
    I think there is damage on the board, you will need to fix the board .. you will have to isolate the power stage one by one and see where the issue is..