Issue link: https://resources.mouser.com/i/1471851
Magnetic Components for EMC Compliance The third major use case for magnetics is for achieving EMC compliance in electronic systems. EMC is the pursuit of limiting a device's electromagnetic emissions in order to prevent interference with other electronic devices in the vicinity. Magnetics are an essential aspect of designing for EMC compliance since EMC is often caused by the inductance and impedance of components and traces within a printed circuit board (PCB). Hence, designers can use magnetic components to modify the behavior of a circuit or system and therefore manipulate and filter out its EMC effects. When choosing a magnetic component for EMC purposes, several factors must be considered. One of the major challenges is that EMC noise can come in many different forms including radiated, conducted, common mode, differential mode, etc. Hence, to successfully filter out EMC-related noise, designers must understand the nature of their noise. Once the noise is well understood, designers must understand how to use magnetics appropriately to mitigate it. Unlike conventional filtering applications, where the primary focus is the magnetic component's inductance, the focus for EMC compliance is often the component's impedance at a given frequency. 14 I Magnetic Components for EMC Compliance Chapter Four "EMC compliance often requires filters to be designed and integrated into the system, using inductors or chokes to filter out common mode or differential mode noise. The correct choice of the magnetic component could improve system performance, efficiency, size, cost, and power density." Dr. Thomas Yilun Luo Advanced Power Inverter Design and Analysis Engineer, General Motors