Impact of electromagnetic interference on the functional safety of smart power devices for automotive applications

Abstract

Integrated smart power devices gain more and more importance in the field of automotive systems. In addition to power transistors such devices usually contain several integrated diagnostic and protection functions. In the event of a fault these functions enable the connected control unit to react appropriately and to protect the application and thus the people. Smart power devices are often responsible for important tasks within a vehicle and are nowadays more and more used to substitute conventional elements like fuses, relays and switches. During the operation they are often exposed to harsh environmental conditions such as high operating temperatures, mechanical stress, etc. At the same time different electromagnetic interferences (EMI) may occur, which can affect their normal functionality. Especially in safety-critical applications such as the airbag control module or the Anti-lock Braking System their correct function is very important to avoid dangerous operating conditions and to ensure functional safety. Based on EMI investigations on a representative smart power high side switch it is shown in this paper to what degree of electromagnetic interference smart power devices are still able to correctly detect critical fault conditions and remain in their fail-save state.

Progress in polymers and polymer composites used as efficient materials for EMI shielding

“…Electromagnetic radiation waves from these devices can interference with other electronic appliances, which leads to the lowering of their efficiency, in some cases even to their malfunction [1,2]. The acting of these factors can also affect functions of human body, mainly when organisms are subjected to their exposition for longer time.…”

Electromagnetic Interference Shield of Highly Thermal-Conducting, Light-Weight, and Flexible Electrospun Nylon 66 Nanofiber-Silver Multi-Layer Film

“…These involve not only the performance of electronic devices (i.e., electromagnetic interference: EMI) [ 1 , 2 ], but also induce effects in human bodies [ 3 , 4 , 5 ]. The frequency range involving EMI can be extremely broad in a variety of applications [ 6 , 7 , 8 , 9 ]. Electromagnetic interference shielding of high frequencies has attracted substantial interest since the advent of wireless internet connection and mobile devices (e.g., 5G cellular phones operate above 6 GHz), wireless local area networks (LAN, 2.4 GHz, and 5 GHz) [ 10 ], and the internet of things (IOT) [ 11 ], in addition to the traditional demands for military and aerospace applications [ 12 , 13 ].…”

Low frequency electromagnetic shielding efficiency of composites based on ethylene propylene diene monomer and multi‐walled carbon nanotubes

“…Since more and more commercially available electronic devices have been put into practice, more and more harmful electromagnetic radiation (EMR) has been accumulated in the surrounding. A lot of studies have been published, which describe negative impact of EMR not only on the functionality of electronic devices, 1,2 but also on human beings health. 3,4 Thus, the necessity of shielding of EMR has become more pronounced over last decades.…”