Is RT8223M compatible with RT8223P?

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  • orientalsniper
    Badcaps Veteran
    • Apr 2013
    • 459
    • USA

    #1

    Is RT8223M compatible with RT8223P?

    I'm working on a 11078-SA and my 3V and 5V are not being generated by U31, I also notice my low side mosfets (Q59 and Q60) drains go short when I plug in the adapter.


    I replaced RT8223M with RT8223P and replaced low side mosfets Si4172DY with APM4826K.
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  • ktmmotocross
    Boardkiller
    • Feb 2014
    • 3573
    • slovakia

    #2
    Re: Is RT8223M compatible with RT8223P?

    what resistance u have on that rails?

    Comment

    • orientalsniper
      Badcaps Veteran
      • Apr 2013
      • 459
      • USA

      #3
      Re: Is RT8223M compatible with RT8223P?

      On diode mode unplugged: 0.428 and 0.465 on 3D3V_PWR and 5V_PWR, but go short when I plug in the adapter, the shorts are gone once I remove the low side mosfets or wait a few minutes until the mosfets close.

      Is RT8223M compatible with RT8223P? If they are, I can look for the problem elsewhere.
      Last edited by orientalsniper; 05-07-2021, 12:39 PM.

      Comment

      • SMDFlea
        Super Moderator
        • Jan 2018
        • 20534
        • UK

        #4
        Re: Is RT8223M compatible with RT8223P?

        RT8223M compatible with RT8223P? They seem ok to me.

        Measure the exact resistance to ground, not in diode mode
        All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

        Comment

        • orientalsniper
          Badcaps Veteran
          • Apr 2013
          • 459
          • USA

          #5
          Re: Is RT8223M compatible with RT8223P?

          6.7K ohms (and rising) for 3D3V_PWR and 50K ohms (and rising) for 5V_PWR.

          Both rails go short when I plug in the adapter.

          So it can't be RT8223P because I tried 3 in new packaging.

          Comment

          • orientalsniper
            Badcaps Veteran
            • Apr 2013
            • 459
            • USA

            #6
            Re: Is RT8223M compatible with RT8223P?

            Applying 2V to 3D3V_PWR, it's drawing about 0.50A and PCH heats up a bit, this one can't be saved right?

            Comment

            • Sametbey
              Badcaps Veteran
              • Jan 2021
              • 229
              • Turkey

              #7
              Re: Is RT8223M compatible with RT8223P?

              U31 stb chip Do you have 8 pin 3.3v LDO and 17 pin 5v LDO voltages. Is there 13 pin 3D3V_PWR activation (Enable). It is not normal that the PCH chip draws 0,50mA when it is idle.
              I'm not happy to be so strong. because it's not humanly

              Comment

              • ktmmotocross
                Boardkiller
                • Feb 2014
                • 3573
                • slovakia

                #8
                Re: Is RT8223M compatible with RT8223P?

                "the shorts are gone once I remove the low side mosfets or wait a few minutes until the mosfets close."

                did u apply power with low side mosfet removed?

                Comment

                • Sametbey
                  Badcaps Veteran
                  • Jan 2021
                  • 229
                  • Turkey

                  #9
                  Re: Is RT8223M compatible with RT8223P?

                  Originally posted by ktmmotocross
                  "the shorts are gone once I remove the low side mosfets or wait a few minutes until the mosfets close."

                  did u apply power with low side mosfet removed?
                  do not do such a thing.
                  I'm not happy to be so strong. because it's not humanly

                  Comment

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