Efficient method for predictive package Power/Ground planes modeling using Multi-Conductor Transmission Lines

Due to the high speed and system miniaturization trends in circuit design, predictive modeling of Power Distribution Network (PDN) in modern multilayered packages and boards becomes more and more important. To reduce design iterations due to signal and power integrity issues, the PDN model needs to be anticipated at early design stage, even if layout is not yet designed. Typical package PDNs consists of multiple layers of Power/Ground planes hence we can model it with a mesh of Multi-Conductor Transmission Lines (MCTLs). This paper presents a fast and efficient method based on unit MCTL calibration for a predictive modeling of different PDNs sizes.