Abstract:
A printed circuit board structure includes a main body and a connecting interface. The connecting interface connects and is located at a side of the main body. The connecting interface includes conductive layers and insulation layers. The conductive layers at least include a first, a second, a third, a fourth conductive layer. The insulation layers at least include a first, a second, a third insulation layers. The insulation layers and the conductive layers are alternately disposed. The first insulation layer is located between the first conductive layer and the second conductive layer. The first conductive layer and the second conductive layer are partially overlapped in their orthographic projections on the first insulation layer. The second insulation layer is located between the second conductive layer and the third conductive layer. The third insulation layer is located between the third conductive layer and the fourth conductive layer.
Abstract:
Package substrates are provided. The package substrate may include a power line and a ground line on a first surface of a substrate body; a plurality of signal lines on the first surface between the power line and the ground line; and a lower ground pattern and a lower power pattern positioned on a second surface of the substrate body opposite to the first surface. The lower ground pattern may be disposed to be opposite to the power line and the lower power pattern may be disposed to be opposite to the ground line. Related semiconductor packages are also provided.
Abstract:
An object of the present invention is to provide a capacitor-incorporated wiring substrate in which connection reliability can be improved through ensuring of a path for supply of electric potential even upon occurrence of a faulty connection in a via-conductor group. In a capacitor-incorporated wiring substrate of the present invention, a capacitor 50 is accommodated in a core 11, and a first and a second buildup layers 12 and 13 are formed on the upper and lower sides, respectively, of the capacitor 50. The capacitor-incorporated wiring substrate has a first via-conductor group to be connected to a first electric potential, and a second via-conductor group to be connected to a second electric potential. A first electrode pattern connected to the first via-conductor group, and a plurality of second electrode patterns connected to the second via-conductor group, are formed in a front-surface electrode layer 51 of the capacitor 50. A first conductor pattern connected to the first via-conductor group, and a plurality of second conductor patterns connected to the second via-conductor group, are formed in a proximate conductor layer 31 of a first buildup layer 12. Each of the second electrode patterns and each of the second conductor patterns connect a predetermined number of via electrodes and extend in such a manner as to be orthogonal to each other.
Abstract:
A wiring board includes a core substrate including an insulation base member; linear conductors configured to pierce from a first surface of the insulation base member to a second surface of the insulation base member; a ground wiring group including a first ground wiring formed on the first surface of the core substrate, and a belt-shaped second ground wiring formed on the second surface of the core substrate and electrically connected to the first ground wiring by way of a part of the linear conductors; and an electric power supply wiring group including a first electric power supply wiring formed on the first surface, and a second electric power supply wiring formed on the second surface and electrically connected to the first electric power supply wiring by way of a part of the plural linear conductors.
Abstract:
A method for electronic circuit power plane design includes analyzing direct current (DC) properties of a power plane of an electronic circuit. The method includes analyzing power net inductance (PNI) properties of the power plane and identifying victim areas of the power plane having predetermined current density properties based on the DC properties and the PNI properties of the power plane. The method further includes replacing the identified victim areas with ground (GND) shapes to form a modified power plane.
Abstract:
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.
Abstract:
A mechanism for continuously referencing signals over multiple layers in laminate packages provides a continuous path for signals from one layer to another while using the ideal voltage reference for all areas of the package and still avoiding discontinuities in the voltage reference. A reference plane adjustment engine analyzes a package design and identifies an ideal top plane for all areas of the package, including areas under particular chip die(s) and areas that are not under a chip die. The reference plane adjustment engine then modifies the package design to reposition ground planes, source voltage planes, signal planes, and vias between layers to maintain a continuous voltage reference regardless of the top layer. The reference plane adjustment engine provides the resulting mixed voltage plane package design to a design analysis engine. A package fabrication system fabricates the package.
Abstract:
A method of forming a circuit board having first and second conductive layers with a dielectric layer, or of forming a capacitor having a dielectric layer in a circuit board with first and second conducting layers, may include forming a first interstice in the first conductive layer, forming a second interstice engaging the first interstice in the second conductive layer, and inserting the dielectric layer between the first and second interstices.
Abstract:
A circuit board may include a first conductive layer having a first interstice and a third interstice; a second conductive layer having a second interstice engaged with the first interstice, and a fourth interstice engaged with the third interstice; and a dielectric layer disposed between the first and third interstices, and the second and fourth interstices. The conductive layers may be sinuously intertwined.
Abstract:
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.