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IWR6843: Only IWR6843ISK work well but not work with BoostBoard

Part Number: IWR6843
Other Parts Discussed in Thread: MMWAVEICBOOST,

Hello,

I have a similar issue in IWR6843ISK+BOOSTBOARD with below:

"

But there is another thing that needs your help. It's about IWR6843ISK and MMWaveICBOOST. We have encountered the following problems.

    (1) Few days ago, when we test MMWaveICBOOST voltage, there was a situation where IWR6843 ISK was no longer powered on through HD CONNECTOR(60 pin). We found IWR6843 ISK can get 5V, but PMIC did not work. However,after IWR6843ISK and MMWaveICBOOST are separated,when IWR6843ISK is only powered by microUSB, the IWR6843 and PMIC can work.

    (2) When IWR6843 ISK is powered by microUSB alone, we toggle the keys to test the board voltage. But IWR6843 ISK seems to have a short circuit, the PMIC does not work, and the current reaches 1A. "

I haven't confirm the voltage of each point yet, but the phenomenon looks like the same.

when I use IWR6843ISK+BOOSTBOARD  to check the uart response,there is nothing.But it work normal when I use ISK6843 only.

 

anybody who can tell me How did you solve it?

Bets Regards;