On Finding an Equivalent Force to Mimic the Multilayer Ceramic Capacitor Vibration

The multilayer ceramic capacitor (MLCC) can vibrate due to the piezoelectric effect when there is AC noise on the power rail. The vibration of the capacitor will generate a force on the PCB and thus cause the PCB vibration and audible problems may occur. The work in this paper finds an equivalent force with similar behavior to the MLCC-generated force. The force is controllable and knowable and thus can mimic the capacitor vibration on the PCB.