Common-mode noise reduction in active-clamped DC-DC converters

摘要

Several configurations of active-clamped DC-DC converters have been proposed. This paper compares the common-mode-noise properties of the conventional type using a pulse transformer for a gate driver and the common-source type. Using a noise measuring system composed of LISN (Line Impedance Stabilization Network) and EMSCAN (Electromagnetic Scanning system), it was clarified that the common-source type has the superiority on noise reduction to the conventional one.