Circuit Break - A MacroFab Podcast

MEP EP#316: Chunk 2 Chunk Current Returns

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MEP EP#316: Chunk 2 Chunk Current Returns

Circuit grounding - How big is too big?

  • Stephen has a new design that is trying something very odd
    • Planes that connect to the star
    • Difference between different grounding techniques
    • 8 layer monster board with multiple power supplies - low noise
    • Parker likes to think of these problems as the extremes of certain examples as a way to think about what happens
      • Take a "star" topography ground for instance
        • Make the trace lengths that connect to the "star" really small
        • Make the star point really "big"
        • This is vias connections direct to a plain

          • Coilcraft has “Elevated” inductors

          • Parker found this tweet by Lukas Henkel showing coilcraft has inductors that are elevated off the PCB which allows placing parts under the component
          • Coilcraft XAR7030 series
            • Unique off-the-board design provides 1.5 mm clearance for parts to be mounted underneath
            • Magnetically shielded for high density applications
            • Torex Semiconductor has combined switch mode controllers and inductors to build micro DC/DC converters
            • PCB Assembly problems?
              • Should XYRS now have a Z height?
              • This is typically on the CMs to "get it right"
              • Probably best to let your CM know what your doing in this case to reduce confusion
                • ...more
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                Circuit Break - A MacroFab PodcastBy MacroFab, Inc.
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