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ISSUE ON BEAGLE BONE BLUE BOARD

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    • October 21, 2022 at 7:21 am #12868
      Sreerag MTSreerag MT
      Participant

        Hi,

        I am using beagle bone blue for my project, i am experiencing a issue were multiple board got bricked, only chg led is lighting up on power up.

        As i had the design, i could able to check the voltages from OSD, and i found that there is no 3.3v and 1.8v from OSD, kindly help me understanding the issue.

      • October 31, 2022 at 9:50 am #12888
        Neeraj Dantu
        Moderator

          Sreerag,

          The power application note for OSD335x provides information on internal power configuration of the SiP: https://octavosystems.com/app_notes/osd335x-power-application-note/. Specifically, Figure 2 shows the power up sequencing of the SiP. You should be able to map the power up sequencing of the faulty boards against the sequence in Figure 2 to see where the PMIC is experiencing problems while powering up.

          Also, make sure to test for the PMIC power rails for shorts. If the boards are operated out of spec, it could damage the PMIC power supplies.

          Best,

          Neeraj

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