The behavior of electro-magnetic radiation of power inductors in power management

Application note form Würth Elektronik about EM radiation radiated from inductors in DC-DC converters. This Application Note focuses on the Electro-Magnetic (EM) radiation behavior of power inductor(s) in DC-DC converters, which is dependent on several parameters such as ripple current, switching frequency, rise & fall time of a switching device, the core material and its permeability and suggests several design tips to mitigate these EMI effects.