So, the issue is basically that the board consumption the first time it’s flashed is around 1mA, and being flashed more than once leads to higher power consumption in sleep and deep sleep modes. This question seems to be somewhat related to your other thread https://communities.intel.com/thread/103835? If the factory reset is successful then the board would then be consuming the 1mA needed for your application. We posted a suggestion in your other thread on how to do a factory reset, give it a try and let us know your results.
thanks for your respone. The problem is that a new board consumes below 1mA no matter if it is flashed with Power example or my program. But after many flashing operations sudenly it starts to consume mentioned 21mA and 16mA. I have already tested it on my two boards (now I'm working on third one but I'm afraid it will probably not take long).
We’ll do some tests to try and get the Quark to factory mode. We want to see if the behavior you get can be corrected after flashing while the board is in factory mode. We’ll post a reply for you here https://communities.intel.com/thread/103835 soon.
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Dear all, the problem seems to be solved. I have made today a thermal picture of the two boards: the good one and that, which takes over 21mA in sleep mode. In the thermal picture of the older board (this one which takes 21mA in sleep mode) we observed that only one element was "red/warm" (had higher temperature than other elements of the board) it was the element named Q4. On the good board this element wasn't so "red/warm". We removed it and put there a new one. After this operation the board starts to takes below 1mA in the sleep mode. So the reason of this high current consumption was the damaged/broken transistor Q4.
Thank all of you who has been helping me resolving this issue, yours ideas and support were very important.