Characterization of a resistive voltage divider design for wideband power measurements

Abstract

Due to the continuing trend towards electrification of vehicles, the exact determination of the electrical efficiency is of increasing importance. This requires accurate current and voltage measurements. In this paper we present our research on a resistive voltage divider design for wideband power measurements. The divider covers voltages up to 1 kV and a frequency range from DC to 10 MHz. The parasitic behavior of the resistors and the layout are discussed in detail. Furthermore we present an exemplary implementation of a 100:1 voltage divider, including capacitive compensation and shielding.