Optimized Power Delivery Performance Using Plane Terminations

This study shows readers an optimized power delivery impedance using RC plane termination. We look at plane termination and its application on an electrically dense production board where remote capacitance from the termination elements alone is enough to keep voltage fluctuation loads within specifications. The paper shows how plane termination can effectively be used to mitigate plane resonances at mid to low frequencies. Measured and simulated data on a high-current memory power rail within a large computer board are used to prove that several bypass capacitors can safely be replaced by plane termination components, allowing for a significant increase in system density. We then show how these termination elements can be further optimized to improve power plane impedance.