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Design and characterization of a step-down switched-mode power converter based on the regulator MC34063A

This paper presents the winning design of the 2015 Student EMC Hardware Design Competition at the EMC 2015, Joint IEEE International Symposium on Electromagnetic Compatibility and EMC Europe. A step-down switched-mode power converter based on the regulator MC34063A is designed. Special attention is given to the minimization of its conducted emissions and output voltage ripple. The selection of the components and the design of the printed circuit board (PCB) layout are discussed. The output voltage ripple and conducted emissions of the designed converter are measured. A line impedance stabilization network (LISN) designed on a separate PCB is used for the conducted emission measurements.

conducted emissions ; electromagnetic interference (EMI) ; filter design ; line impedance stabilization network (LISN) ; switched-mode power supply (SMPS)

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