Articles | Volume 9
01 Aug 2011
 | 01 Aug 2011

Reduction of heat sink common-mode currents in switching mode power supply circuits

J. Kulanayagam, J. H. Hagmann, K. F. Hoffmann, and S. Dickmann

Abstract. In this paper, a new filter design for a heat sink is presented. The parasitic couplings between electric power devices and the heat sink are responsible for common-mode currents. The main focus is on the reduction of these currents to reduce the heat sink radiation. For this purpose a new filter design is proposed. In addition, experimental results are shown to validate the proposed filter.