A printed circuit board comprises N power switching cells operating in parallel and respectively comprising a transistor leg, at least one decoupling capacitor and a gate driver circuit. Each transistor leg comprises respective first and second transistors in series, a drain of the first transistor being connected to a positive DC line, a source of the second transistor being connected to a negative DC line, a source of the first transistor being connected to a drain of the second through a connection middle-point connected to an output terminal. Each gate driver circuit controls respective switching ON and OFF of the corresponding first and second transistors. The N transistor legs of the corresponding N power switching cells are positioned to substantially form a convex polygon having N edges of substantially the same length, each one of the N transistor legs being positioned along one of the edges of the convex polygon.

In a multilayer printed circuit board (circuit board 20) having an inverter (switching elements 22) mounted thereto, only a second wiring pattern P2 arranged downstream of a semiconductor relays 24 and able to shut off an electric power supply and a third wiring pattern P3 arranged upstream of a shunt resistor 27 and able to detect an overcurrent are placed in adjacent layers in a manner to face each other, and thus, even if the mutually facing portions (laminated portion) of the these two wiring patterns P2 and P3 are subjected to short circuit, an overcurrent caused by the short circuit can be detected by the shunt resistor 27 and the electric power supply to the switching elements 22 can be shut off by the switching elements 22, so that overheating at the second and third wiring patterns P2 and P3 can be avoided.

A power module having a packaging structure includes a substrate having a first conductive area, a second conductive area, a third conductive area, a first fixing area and a second fixing area. The first, the second and the third conductive areas are electrically connected to a first terminal, a second terminal and a third terminal, and the first and the second fixing areas are electrically connected to a first switch set and a second switch set, so that they are in a parallel arrangement. The first terminal is a current input end, the second terminal is an intermediate end, and the third terminal is a current output end. When a current flows from the current input end to the intermediate end, or from the intermediate end to the current output end, the current flows straightly in order to reduce a crossover area and lower the stray inductance.

An electronic device is downsized while suppressing performance degradation of the electronic device. In the electronic device, a power module including a power transistor is arranged in a first region on a back surface of a through hole board having a plurality of through hole vias having different sizes while a pre-driver including a control circuit is arranged in a second region on a front surface of the board. In this case, in a plan view, the first region and the second region have an overlapping region. The power module and the pre-driver are electrically connected to each other via a through hole via. The plurality of through hole vias include a through hole via having a first size, a through hole via which is larger than the first size and in which a cable can be inserted, and a through hole via in which a conductive member is embedded.

A circuit structure is provided to which an electronic component can be easily mounted (electrical connection of terminals). A circuit structure that includes a substrate provided with a conductive pattern on one face thereof; a conductive member fixed to the other face of the substrate; an electronic component that has first terminals and of a plurality of terminals, that are electrically connected to the conductive member, and a second terminal of the plurality of terminals that is electrically connected to the conductive pattern provided on the substrate; and a relay member for electrically connecting the second terminal and the conductive pattern provided on the substrate, at least a portion of the relay member being fixed to the conductive member via an insulating material.

An article for a power inverter, includes a multilayer printed circuit board having a first and second electrically conductive wiring layer and at least a first dielectric layer interposed between the first and second electrically conductive wiring layers. Each conductive wiring layer includes a common input and output line, the common input and output lines at least partially overlapping one another in a projection along a thickness of the multilayer printed circuit board. A set of input mounting pads is carried by the first common input line and a set of input mounting pads is carried by the second common input line, the input mounting pads of the second set of input mounting pads are interleaved with the input mounting pads of the first set of input mounting pads along a first axis. The article further includes a set output mounting pads carried by the common output line.

A multilayer printed circuit board is provided. The multilayer printed circuit board includes a core, a first conductive layer coupled to the core, an insulating layer covering the first conductive layer, and a second conductive layer spaced from the first conductive layer by the insulating layer. The first conductive layer includes a first portion having a first thickness and a second portion having a second thickness greater than the first thickness. The second conductive layer is electrically coupled to the second portion of the first conductive layer by a conductive via extending through the insulating layer.

In a first aspect of the present inventive subject matter, a light-emitting device includes a substrate; a light-emitting element electrically connected to the substrate and arranged in a light-emitting area that is positioned on an upper surface of the substrate; and an electronic part that is electrically connected to the substrate and arranged outside the light-emitting area on the upper surface of the substrate, the electronic part obliquely protruding from an edge of the upper surface of the substrate.

A power semiconductor module includes an insulating circuit substrate; a printed circuit board disposed over the insulating circuit substrate; and a plurality of terminals each having a rod-shaped portion and including a first protrusion and a second protrusion each protruding laterally form a side face of the rod-shaped portion; wherein at least one of the plurality of terminals is inserted to one of the through-holes of the printed circuit board and is locked to the one of the through-holes via the first protrusion, and wherein at least another one of the plurality of terminals is inserted to another one of the through-holes of the printed circuit board and is locked to said another one of the through-holes via the second protrusion, and an end of the at least another one of the plurality of terminals is electrically connected to a conductive plate on the insulating circuit substrate.

An improved distributed-output multi-cell-element power converter utilizes a multiplicity of magnetic core elements, switching elements, capacitor elements and terminal connections in a step and repeat pattern. Stepped secondary-winding elements reduce converter output resistance and improve converter efficiency and scalability to support the high current requirements of very large scale integrated (“VLSI”) circuits.