(A) hierarchical analysis model of wireless power transfer system electromagnetic interference on analog-to-digital converters in automotive system

Abstract

Wireless power transfer (WPT) systems, such as an electric vehicle (EV) charger, generate relatively intense resonant magnetic fields, which lead to performance degradation of analog-to-digital converter (ADC), an essential circuit for sensors in automotive system. It is difficult to estimate the WPT system noise effects on ADC considering the chip-PCB-cable hierarchical structure. Thus, we propose a hierarchical analysis model considering cables and harmonics to estimate WPT system noise effects on ADCs for the increased reliability of chip performance. In this research, we propose a hierarchical analysis model that can estimate the WPT system EMI effects on ADC with chip-PCB-cable hierarchical structure. In addition, we propose a hierarchical analysis model considering harmonics of WPT system. Finally, we verify the proposed model with the simulation and measurement.