Experimental Results for the Application of Techniques for Reducing EMI Noise in a Switch-Mode Power Supply

Due to problems in the functioning of electronic equipment generated by electromagnetic interference (EMI), several standards were created to impose limits to this interference. Compliance with electromagnetic compatibility (EMC) standards is usually an indispensable item in the approval of products for commercialization. In this context, this work proposes to present techniques with the objective of mitigating the electromagnetic noise emission of a switch-mode power supply (SMPS) with multiple outputs. Tests of conducted and radiated emissions were carried out to show the effectiveness of the techniques performed with reference to the CISPR11 standard.