The main objective of this thesis is the study of integrated circuits immunity against electromagnetic interference. The beginning is devoted to the presentation of the electromagnetic compatibility of integrated circuits. The tools enable the mastery of EMC are then presented. The main themes of modelling, optimization and measurement are exposed. The study continues by establishing a methodology for building a model of immunity applied to a converter circuit. This methodology is based on the proposed standard ICIM-CI to build successively the different blocks of the model of immunity. A particular attention is given to the description of the failure mechanism because it leads to the final results of immunity. The results from the model are then compared and validated by measurements on the circuit. Finally further studies on more complex circuits can suggest improvements and new perspectives for the modelling approach.
