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A novel passive integration structure based on flexible multi-layer foils was proposed for EMI filter in switching-mode power supply. Common mode (CM) inductors and capacitors, differential mode (DM) inductors and capacitors were all integrated in a single unit. This passive integration applied flexible multi-layer foils (FML). Prototypes were implemented for an 1 kW switching power supply. The conductive...
A model of Distributed Electromagnetic Component (DEMC) for integrated EMI filter based on FML foil is proposed in this paper. The model is used for estimating the insertion loss of integrated EMI filter with FML foils. In this model, distributed parameters such as parasitic capacitance, magnetic coupling between conductors, core loss, copper loss, dielectric loss of the magnetic core are all included...
A novel integrated EMI filter structure is proposed in this paper, based on FML foils. It integrates common mode inductors and differential mode capacitors and inductors into a single unit. A novel interleaved flexible multi-layer (FML) foil structure is proposed to overcome the difficulty of enlarging the DM capacitance. A prototype is constructed based on this concept and was put into a front-end...
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