PROJECT TITLE :

Equivalent-Circuit Model for High-Capacitance MLCC Based on Transmission-Line Theory

ABSTRACT:

This paper provides a modeling methodology for prime-capacitance multilayer ceramic capacitors (MLCCs) based on the transmission-line theory. To model the high-capacitance MLCC comprised of hundreds of thin layers, a distributed equivalent circuit is modified to a transmission-line circuit. Less complicated models for MLCCs are demonstrated employing a continued fractions approximation from the transmission-line input impedance equation. A second-order model predicts MLCC characteristics up to the primary self-resonant frequency, and a fourth-order model corresponds additional accurately to the MLCC behavior up to 100 MHz. Likewise, model parameters are extracted using the measured impedance and physical dimension data while not optimization.