Abstract: A power converter for an onboard electrical system of a vehicle which can be electrically driven, has a first line for a first potential, a second line for a second potential which differs from the first potential, and a third line for a reference potential which lies between the first potential and the second potential. A filter device has a first capacitor and a second capacitor and is designed to establish a first electrically conductive connection between the first line and the third line via the first capacitor and an electrically conductive connection between the second line and the third line via the second capacitor on the basis of control information and sever the electrically conductive connections along at least one current direction.

Abstract: The present invention is a MEMS-based two-phase LHP (loop heat pipe) and CPL (capillary pumped loop) using semiconductor grade silicon and microlithographic/anisotrophic etching techniques to achieve a planar configuration. The principal working material is silicon (and compatible borosilicate glass where necessary), particularly compatible with the cooling needs for electronic and computer chips and package cooling. The microloop heat pipes (?LHP™) utilize cutting edge microfabrication techniques. The device has no pump or moving parts, and is capable of moving heat at high power densities, using revolutionary coherent porous silicon (CPS) wicks. The CPS wicks minimize packaging thermal mismatch stress and improves strength-to-weight ratio. Also burst-through pressures can be controlled as the diameter of the coherent pores can be controlled on a sub-micron scale. The two phase planar operation provides extremely low specific thermal resistance (20-60W/cm2).