Making Three-Terminal Capacitance-Voltage Measurements Up to 400 V Using the 4200A-CVIV Multi-Switch Bias Tee Capability

This application note explains how the CISS, COSS and CRSS measurements are made using the bias tee capabilities in the 4200A-CVIV Multi-Switch. This application note also shows how the instrument DC output voltage was doubled from 200 V to 400 V for higher voltage measurements on the drain, which is beneficial for testing higher power semiconductors, such as GaN devices.