MEP EP#316: Chunk 2 Chunk Current Returns

<h4><a href="https://macrofab.com/blog/mep-ep316-chunk-2-chunk-current-returns">MEP EP#316: Chunk 2 Chunk Current Returns</a><br></h4><h4>Circuit grounding - How big is too big?</h4> <ul> <li aria-level="2">Stephen has a new design that is trying something very odd <ul> <li aria-level="3">Planes that connect to the star</li> </ul> </li> <li aria-level="2">Difference between different grounding techniques</li> <li aria-level="2">8 layer monster board with multiple power supplies - low noise</li> <li aria-level="2">Parker likes to think of these problems as the extremes of certain examples as a way to think about what happens <ul> <li aria-level="2">Take a "star" topography ground for instance <ul> <li aria-level="2">Make the trace lengths that connect to the "star" really small</li> <li aria-level="2">Make the star point really "big"</li> <li aria-level="2">This is vias connections direct to a plain</li> </ul> </li> </ul> </li> </ul> <h4>Coilcraft has “Elevated” inductors</h4> <ul> <li>Parker found this tweet by <a href="https://twitter.com/QVHenkel/status/1493389525904670722?t=HlULMisbWKOKQq5HaxJ8hQ&amp;s=19" target="_blank" rel="noopener">Lukas Henkel</a> showing coilcraft has inductors that are elevated off the PCB which allows placing parts under the component</li> <li><a href="https://www.coilcraft.com/en-us/products/power/shielded-inductors/molded-inductor/xar/xar7030/" target="_blank" rel="noopener">Coilcraft XAR7030 series</a> <ul> <li>Unique off-the-board design provides 1.5 mm clearance for parts to be mounted underneath</li> <li>Magnetically shielded for high density applications</li> </ul> </li> <li aria-level="2"><a href="https://www.mouser.com/datasheet/2/760/TOSL_S_A0009028612_1-2575156.pdf" target="_blank" rel="noopener">Torex Semiconductor</a> has combined switch mode controllers and inductors to build micro DC/DC converters</li> <li aria-level="2">PCB Assembly problems? <ul> <li aria-level="2">Should XYRS now have a Z height?</li> <li ari