4 research outputs found
Reduction of heat sink common-mode currents in switching mode power supply circuits
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
Numerical modeling for heatsink emissions in power electronics
The parasitic coupling between power semiconductors and the heat sink is
responsible for noise current in Switching Mode Power Supply (SMPS) systems.
In this paper, the variations in the radiation characteristics of heatsinks
are investigated with respect to their geometries by use of numerical models.
Analyses are facilitated by using a mopole antenna as an EMI receiver and by
using simplified heatsink models as EMI transmitters to model the heatsink
radiated emissions. In addition, the analysis is confirmed using
laboratory measurements