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Original question:

AWR1843BOOST: IC getting HOT

AWR1843BOOST: IC getting Hot

Renan Santos Adriano
Genius 16500 points
Part Number: AWR1843BOOST

Hello Team,

I'm posting this inquiry on behalf of my customer.

Hello there, I bought the AWR1843BOOST about two months ago. And I haven't used it for a while. The day before yesterday, I wanna adjust it to several tests about target recognition, Unfortunately, it got hot on the green board(DCA development board), meanwhile, the lights that symbolize the initialization (I think the red lights when powered on)
failed to shine. I think there is a shortest path problem on the board.
for the reason that the chip labeled "lattice" is extra hot. I think the tech team will not help a lot. I test the two connections with an elec_pen and it reveals that there is a shortest path problem

Newly open thread as suggested by TIer in https://e2e.ti.com/support/sensors-group/sensors/f/sensors-forum/1020005/awr1843boost-ic-getting-hot

Also, to answer the inquiry on the thread:

Is the DCA or the AWR1843BOOST board that is getting hot?
  it is the DCA that is getting hot..
If it is the AWR1843BOOST, are both of them getting hot?
  no,the awr boost is normal.
Are you able to run the mmWave SDK demo on the AWR1843BOOST board?
  I can not even connect the DCA to my computer. The  serial port cannot be founded.
 
Regards,
Renan
  • 0
    TI__Mastermind 31680 points

    Hello Renan, 

    Thankyou for creating a new thread and following up on the questions of your previous E2E post. I do have a couple more questions for us to understand your situation better : 

    1. How are they supplying power to the DCA1000 board, is it using an independent power supply or getting from the AWR board? and what is the rating of the power supply used? 

    2. Is this the first time they are using the DCA1000 board or has this been used previously for data capture? Looks like the DCA1000 board has been damaged.

    Regards,

    Ishita

  • 0 in reply to Ishita Kochar
    TI__Mastermind 23855 points

    I would like to add a another question to the above.

    3. What is the resistance between the 5V input supply and GND?

    Regards,

    Adrian 

  • 0 in reply to aozer
    TI__Genius 16500 points
    Hello Team,
    Please see response from my Customer below:
    1、we always use an independent power supply for the DCA1000 board  and  awr board ,both of them are supplied by 5V*2A power source,  I bought two set of the awr 1843，this one we have benn talking about  is broken while another one is working normally.
     
    2、This broken one is the first time for data capture, we have not used it before.So it bothers me,
    Regards,
    Renan
  • 0 in reply to Renan Santos Adriano
    TI__Mastermind 23855 points

    Hello Renan,

    Can you please help measure the resistance between 5V and GND on the DCA1000?

    Regards,

    Adrian