EMC robust analog output driver for automotive applications

Abstract

This paper describes an analog output stage of a combined high side - low side driver suitable for automotive environment. Design of the driver was dictated by the environment - high electromagnetic compatibility (EMC) requirements, low susceptibility, robustness of the driver to transient overvoltage pulses and mis-wiring. The driver has also to fulfill safety requirements. In case of failure conditions like a missing ground or supply connection the output of the driver goes into diagnostic position.