A high-power Voltage Regulator Module (VRM) includes a housing having side walls, an upper opening, and a lower opening, a VRM circuit board oriented within the housing, a plane of the VRM circuit board oriented in a parallel to at least one of the side walls of the housing, an upper Printed Circuit Board (PCB) coupled to the upper opening of the housing, a lower panel coupled to the lower opening of the housing, a coolant inlet port formed in the lower panel, and a coolant outlet port formed in the lower panel. The high power VRM may include a coolant inlet adapter coupled to the coolant inlet port and a coolant outlet adapter coupled to the coolant outlet port. The coolant inlet adapted and the coolant outlet adapter may provide support for the VRM.

A power system includes a power module, an electronic load and a system board. The power module includes a first surface, a second surface, a switch and a plurality of conductive parts, wherein the switch is disposed on the first surface of the power module and the plurality of conductive parts are disposed on the second surface of the power module. The electronic load includes a plurality of conductive parts. The power module and the electronic load are disposed on two opposite sides of the system board, the power module delivers power to the electronic load through the system board, and gaps and networks of the plurality of conductive parts of the power module correspond to those of the plurality of conductive parts of the electronic load.

Electronic equipment includes a plurality of heat generating elements, a single heat sink, and a single cover. The heat generating elements are arranged adjacent to one another in a one-dimensional array in a predetermined alignment direction. The faces of the heat generating elements on one side are fixed directly or indirectly to the heat sink. The faces of the heat generating elements on the other side are in direct or indirect contact with the cover. The cover is fixedly screwed to the heat sink at opposite ends in the alignment direction on the outer side of the heat generating elements. The heat generating elements are sandwiched and held between the heat sink and the cover. This allows heat generated by the heat generating elements to be efficiently radiated via the heat sink and allows the heat generating elements to be easily connected to the heat sink.

According to the present invention, a power module that has a base to which a power semiconductor device is bonded and a sealing body for sealing said base and in which the base and the sealing body are bonded with a primer layer interposed therebetween, said primer layer being formed of a cured product of a silicone-modified polyimide resin composition containing, for example, components (A) to (E) below, has high reliability because delamination of an epoxy sealing resin under high temperature conditions is suppressed. (A) Silicone-modified polyimide resin represented by formula (1)
Ee-Ff-Gg  (1)
E is represented by formula (2), F is represented by formula (3), G is a divalent group derived from diamine, f+e+g=100 mol %, the molar ratio f/(e+g) is 0.9-1.1, and e is 1-90 when the sum of e and g is 100. ##STR00001##
R.sup.A is a divalent hydrocarbon group, R.sup.1 and R.sup.2 are alkyl groups, R.sup.3 and R.sup.4 are monovalent aliphatic hydrocarbon groups, R.sup.5 and R.sup.6 are aryl groups or the like, m is an integer of 0-20, n is an integer of 1-20, o is an integer of 0-20, and m+n+o is an integer of 1-30.
-Im-X-Im-  (3)
Im is a cyclic group including a cyclic imide structure, and X is a single bond or the like. (Bc) Heat-decomposable radical initiator (C) Solvent (D) Antioxidant (E) Fumed silica.

In the case where as a communication means among two or more control circuit boards corresponding to an on-vehicle environment, a wire harness is mounted, space-saving efficiency and assembly efficiency pose problems. When a board-to-board connector is utilized, arrangement of the control circuit boards cannot freely be performed, due to restriction of predetermined specific dimensions. An electric-power conversion apparatus includes a cooling device having a first surface, a second surface opposite to the first surface, and a hole penetrating the first surface and the second surface, a first control circuit board provided at the first surface side, a second control circuit board provided at the second surface side, and a pin header having a mold portion that partially wraps a connection pin penetrating the hole so as to connect the first control circuit board with the second control circuit board and that is fixed to the cooling device.

An electronic assembly includes a flexible printed circuit board (PCB) circumferentially disposed around a motor and a thermal management assembly (TMA) thermally connected to the flexible PCB. One or more switching semiconductor devices are disposed on a first surface of the flexible PCB. The TMA includes a cooling jacket, at least one jacket manifold formed through the cooling jacket and a thermal compensation base layer thermally coupled to the cooling jacket. The cooling jacket is mounted around a circumference of the motor and has a mounting surface concentric with the circumference of the motor. The mounting surface is coupled to the first surface of the flexible PCB. The at least one jacket manifold has a fluid inlet and a fluid outlet defining a fluid flow area therebetween. The thermal compensation base layer is thermally coupled to the cooling jacket and the one or more switching semiconductor devices.

A power module of a medium-high-voltage isolated converter is disclosed. The power module includes a first circuit, a second circuit, a transformer and a shielding structure. A potential of the first circuit is greater than a potential of the second circuit. The transformer includes a first leading wire electrically connected to the first circuit, and a second leading wire electrically connected to the second circuit. The shielding structure is disposed between the transformer and the second circuit. The second leading wire is electrically connected between the transformer and the second circuit through the shielding structure, and the shielding structure is maintained at a constant potential.

An electric circuit for a power converter having a substrate having a first face on which electronic components are mounted and a second face intended to cooperate with a cooling system, the substrate having a stack of conductive layers made of electrically and thermally conductive material and at least one insulating layer made of electrically insulating material, two successive conductive layers being separated by an insulating layer, and the conductive and insulating layers extending in parallel planes and being mechanically associated together. Each conductive layer has two opposite faces parallel to the plane in which the first face of the substrate extends and includes, on at least one of its two faces, at least one boss extending in a direction perpendicular to the plane, the at least one boss passing through at least one other conductive layer and opening out onto the first or the second face of the substrate.

A converter comprises: a housing comprising a refrigerant flow path; a printed circuit board disposed on top of the housing and on the upper surface of which an electronic component is disposed; and a cover disposed on top of the printed circuit board and which covers the upper surface of the electronic component, wherein a heat transfer layer filled with a thermal interface material is disposed on the upper surface of the housing or the lower surface of the cover overlapping the electronic component in the vertical direction.

A mounting base can comprise: a group of mounting areas, each mounting area of the group of mounting areas comprising: a respective mechanical connector member of a group of respective mechanical connector members for attaching to a complementary mechanical connector member on each direct-current to direct-current (DC/DC) converter unit of the group of DC/DC converter units, and a respective electrical connector of a group of respective electrical connectors for attaching to a complementary electrical connector on each DC/DC converter unit of the group of DC/DC converter units, a group of electrical conductors attached to the group of respective electrical connectors in each mounting area, and attached to a main connector on the mounting base for connecting to a high-voltage (HV) connector of a main HV supply, and a cooling channel extending in heat conducting contact with the group of mounting areas.