13 Replies Latest reply on Mar 18, 2019 12:13 AM by ZhengbaoZ_96

    BCM43438 Periodic power consumption spikes



      I hope this is the right place to post this question.

      We are using an embedded BCM43438 chip for wifi communication on a board powered by single 1 cell LIPO battery.

      When wifi is activated we exprience periodic powe consumption spikes (which cause a reset to our CPU when battery levels start to drop).

      The period depends on whether we connected to the required network or not.

      When we are connected this happens roughly every 2 minutes, otherwise its about 6 seconds.

      We would like to know what is happening and whether we can disable it or not.


      The current draw is much higher than normal transmission power and even much more than when we initiate a scan (i.e. iwlist scan)/


      I would really appreciate any help on this issue,

      Thank you very much