X2Y® technology used for decoupling

Power distribution systems (PDS) on printed circuit boards (PCB) have increasing complexities associated with them. Multiple voltages, lower voltage levels, higher frequency content, increasing supply demands, and parasitics magnify sensitivities to transients and noise voltage/current. Capacitors are typically used as a local source of energy to suppress transients and provides a low-pass filter operation for noise by providing low impedance. This paper investigates the impedance properties of standard multilayer ceramic capacitors (MLCCs) and compares them to the X2Y® technology circuit 2 configuration for use in decoupling applications.