Hey ceng

I am in the process of debugging it. It’s definitely something in-circuit as the TI EVK does not exhibit this issue. Without the TI part though I can sweep the input voltage without issue.

I’m hoping to have a solution soon. Stay tuned.

      @ceng found the issue. Unfortunately it won’t get addressed until the next spin of boards. (It requires a PCB change)

        Thanks for the update, do you mind sharing what the issue is? If it is something I can fix on my v5 boards with a mod then I would prefer to do that in the meantime.

          @AchimKraus same problem. The fix does fix the higher current at higher voltage. It does require cutting a trace and running a short wire.

          If that sounds manageable to you guys I’ll try to rework a board and take a good picture.

          • ceng replied to this.

            same problem

            Thanks!
            Though my devices run from battery, that situation last only very short, so it’s not really an issue.

            25 days later

            jaredwolff A picture with the modification carried out would be much appreciated thank you

                Or even just a description of the modification is fine for me. Is there a rough timeline yet for when there will be a HW revision that incorporates the fix? I’d like to order more of these boards for use in projects but if I can hold off a bit longer and wait until a HW revision so I don’t have to mod more than necessary myself, this would be preferable.

                  @ceng it won’t be until late Q1 at the earliest.

                  • If you’re using the RTC, the trace on U8.10 going to VSYS should be cut. I use an exacto knife (carefully!). Then the RTC side should be connected to +3V3. The easiest way is to connect the +3V3 side of C17 to the same on C21.
                  • If you’re not using the RTC, you can remove U8 all together with hot air.

                  Here’s a picture of a hasty rework.

                  the trace on U8.10 going to VSYS should be cut

                  That’s the trace, which a tiny part goes to C17 (below your blue wire)?

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