摘要:
Apparatus and methods are provided for ameliorating distortion issues associated with a conductor that passes over a void in a reference plane. In an example, the signal conductor can include a first part routed over the major surface of a first side of the reference plane structure on a first side of the void and that approaches a first edge of the reference plane structure with a first trajectory, a second part routed over the major surface of the reference plane structure on a second side of the void and that approaches a second edge of the reference plane structure with a second trajectory, and a third portion connecting the first portion with the second portion, the third portion spanning the void, and having a plurality of spurs extending from a body of the third portion.
摘要:
An electronic device and semiconductor package include a printed circuit board and a semiconductor device mounted thereon. The printed circuit board includes one or more thermally conductive vias for dissipating heat.
摘要:
A multilayer wiring board includes a signal electrode, a first power supply electrode, and a ground electrode, which are connected to a first element that outputs a signal, an electrode connected to a second element that receives the signal, a ground layer that serves as a return path for a return current of the signal, a first power supply layer that is disposed adjacent to the ground layer with a dielectric layer interposed therebetween and supplies electric power to the first element, and a second power supply layer that is provided independently of the first power supply layer and supplies electric power to the second element. The first power supply layer causes the return current to return to the first element through the first power supply electrode as a displacement current between the ground layer and the first power supply layer.
摘要:
A direct current (DC) link capacitor module includes a printed circuit board (PCB) formed by sequentially disposing a first electrode substrate, an insulation substrate, a second electrode substrate, a third electrode substrate; a plurality of DC link capacitors connected in parallel to each of the first electrode substrate and the second electrode substrate; a plurality of first Y-capacitors connected in series to each of the first electrode substrate and the third electrode substrate, and connected in parallel to the DC link capacitors; and a plurality of second Y-capacitors connected in series to each of the first electrode substrate and the third electrode substrate, and connected in parallel to the first Y-capacitors, thereby achieving a miniaturization and facilitating a fabrication by connecting the plurality of DC link capacitors using the PCB.
摘要:
A circuit board according to the present invention includes a main surface, a back surface parallel to the main surface, a side surface positioned between edges of the main surface and the back surface, and first and second board terminals covering a portion of the main surface and a portion of the side surface, respectively. According to the present invention, because the board terminals are provided not only on the main surface but also on the side surface of the circuit board, the total number of board terminals can be increased while maintaining sufficient pitch and width of the board terminals.
摘要:
An information handling system, e.g., a mainframe computer, which includes as part thereof a housing having therein an electrical assembly including a circuitized substrate which in turn includes a plurality of contiguous open segments which define facing edge portions within an electrically conductive layer to isolate separate portions of the conductive layer such that the layer can be used for different functions, e.g., as both power and ground elements, within the system. At least one electrical component is positioned on and electrically coupled to the circuitized substrate of the system's electrical assembly.
摘要:
A multi-layered printed wiring board, capable of securing required wiring density even with a decreased number of wiring layers and reducing radiation noises, has at least three wiring layers each at least having at least one power supply line or a ground line, and another kind of line, the wiring layers each having an outer edge. A ground line is formed at the outer edge of at least one of the wiring layers. A basic power supply line is formed inside the ground line. At least one power supply line extends from the basic power supply line. A plurality of electronic parts are mounted on at least one of the wiring layers. The at least one power supply line is wired to mounting positions of the electronic parts via at least one of the wiring layers.
摘要:
Mounting components such as LSIs, which emit noise to the outside and are subjected to the influence of external noise, on the top-most layer and the bottom-most layer respectively, a co-existing layer of the ground region and the power source region has been employed, where a ground region has been provided respectively to the range corresponding to the position the LSIs on the next layer below the top-most layer and the next layer above the bottom-most layer. Accordingly, the number of layers to be laminated to form the multilayer substrate has been reduced, because it is no longer required, unlike the related art, to provide a ground layer where the ground pattern is formed substantially over the entire surface of layer respectively to the next layer below the top-most layer having mounted a LSI thereon and of the next layer above the bottom-most layer having mounting a LSI thereon.
摘要:
A DC bus for use in a power module has a positive DC conductor bus plate parallel with a negative DC conductor bus plate. One or more positive leads are connected to the positive bus and are connectable to a positive terminal of a power source. One or more negative leads are connected to the negative bus and are connectable to a negative terminal of a power source. The DC bus has one or more positive connections fastenable from the positive bus to the high side of a power module. The DC bus also has one or more negative connections fastenable from the negative bus to the low side of the power module. The positive bus and negative bus permit counter-flow of currents, thereby canceling magnetic fields and their associated inductances, and the positive and negative bus are connectable to the center portion of a power module.
摘要:
A circuitized substrate which includes a plurality of contiguous open segments which define facing edge portions within an electrically conductive layer to isolate separate portions of the conductive layer such that the layer can be used for different functions, e.g., as both power and ground elements, within a product (e.g., electrical assembly) which includes the substrate as part thereof. A method of making the substrate, an electrical assembly utilizing the substrate, a multilayered circuitized assembly also utilizing the substrate and an information handling system, e.g., a mainframe computer, are also provided.