摘要:
A method for assigning power and ground pins in array packages in order to enhance next level routing is provided. In one embodiment, the method comprises arranging connections of a semiconductor array package, the semiconductor package having an integrated circuit with power, ground, and signal connections, in 2×3 connection grids. Each connection grid includes a power connection and a ground connection which is adjacent to the power connection. The 2×3 connection grids are arranged so that each connection at the periphery is a signal connection. A 4:1:1 signal:power:ground connection ratio is maintained in the arrangement, wherein no more than four signal connections are present for each power connection, and no more than four signal connections are present for each ground connection.
摘要:
A system and method for distributing power to an integrated circuit. In one embodiment, a power laminate may be mounted to a printed circuit board (PCB). The integrated circuit for which power is to be distributed may be electrically coupled to the PCB. The power laminate may include one or more power planes and one or more reference (i.e. ground) planes, with each pair of power/reference planes separated by a dielectric layer. The power laminate may also include a connector or other means for receiving power from an external power source. The power laminate may be electrically coupled to the integrated circuit, thereby enabling it to provide power to the integrated circuit. The power laminate may also include a voltage regulator circuit, and a plurality of decoupling capacitors.
摘要:
A low inductance mount for decoupling capacitors. In one embodiment, a circuit carrier such as a printed circuit board (PCB) includes a surface layer, a first layer adjacent to the surface layer, and a second layer adjacent to the first layer. A conductive region is implemented on the surface layer, and is electrically coupled to a first circuit plane in the first layer. At least one mounting pad is located on the surface layer of the PCB within the conductive region. The mounting pad is electrically isolated from the remainder of the conductive region and is electrically coupled to a second circuit plane in the second layer. A capacitor is mounted on the PCB, wherein a first terminal of the capacitor is coupled to the conductive region and a second terminal is coupled to the mounting pad.
摘要:
A method for achieving a desired value of electrical impedance between conductors of an electrical power distribution structure by electrically coupling multiple bypass capacitors and corresponding electrical resistance elements in series between the conductors. The resistance elements may be annular resistors, and may provide the designer a greater degree of control of the system ESR. The annular resistors may comprise a first terminal, an annular resistor, and a second terminal. The second terminal may be located within the confines of the annular resistor. The annular resistors may be printed onto a conductive plane (e.g. a power plane or a ground plane), or may be a discrete component.
摘要:
A system and method for distributing power to an integrated circuit. In one embodiment, a power laminate may be mounted to a printed circuit board (PCB). The integrated circuit for which power is to be distributed may be electrically coupled to the PCB. The power laminate may include one or more power planes and one or more reference (i.e. ground) planes, with each pair of power/reference planes separated by a dielectric layer. The power laminate may also include a connector or other means for receiving power from an external power source. The power laminate may be electrically coupled to the integrated circuit, thereby enabling it to provide power to the integrated circuit. The PCB may include a signal layer for conveying signals to and from the integrated circuit, but does not include any means for providing core power to the integrated circuit. Thus, all core power provided to the integrated circuit may be supplied by the power laminate.
摘要:
A system and method for distributing power to an integrated circuit. In one embodiment, a power laminate may be mounted to a printed circuit board (PCB). The integrated circuit for which power is to be distributed may be electrically coupled to the PCB. The power laminate may include one or more power planes and one or more reference (i.e. ground) planes, with each pair of power/reference planes separated by a dielectric layer. The power laminate may also include a connector or other means for receiving power from an external power source. The power laminate may be electrically coupled to the integrated circuit, thereby enabling it to provide power to the integrated circuit. The power laminate may also include a voltage regulator circuit, and a plurality of decoupling capacitors.
摘要:
A printed circuit board (PCB) is configured to minimize skew between two parallel signal trace portions. The PCB comprises a laminate layer, which includes a fiberglass weave and includes a plastic resin deposited on each face of the fiberglass weave to form a first face and second face of the laminate layer. The fiberglass weave comprises a first set of fiberglass bundles in a first orientation interwoven with a second set of fiberglass bundles in a second orientation. Moreover, the PCB comprises trace a layer that is coupled to the first face of the laminate layer, and includes two or more signal traces. Two parallel trace portions of the two or more signal traces are configured to have a matching orientation and separation distance to a neighboring fiberglass bundle of the fiberglass weave, thereby ensuring that the two parallel trace portions encounter matching dielectric constants from the laminate layer.
摘要:
A printed circuit board (PCB) is configured to minimize skew between two parallel signal trace portions. The PCB comprises a laminate layer, which includes a fiberglass weave and includes a plastic resin deposited on each face of the fiberglass weave to form a first face and second face of the laminate layer. The fiberglass weave comprises a first set of fiberglass bundles in a first orientation interwoven with a second set of fiberglass bundles in a second orientation. Moreover, the PCB comprises trace a layer that is coupled to the first face of the laminate layer, and includes two or more signal traces. Two parallel trace portions of the two or more signal traces are configured to have a matching orientation and separation distance to a neighboring fiberglass bundle of the fiberglass weave, thereby ensuring that the two parallel trace portions encounter matching dielectric constants from the laminate layer.
摘要:
A system and method for distributing power to an integrated circuit. In one embodiment, a power laminate may be mounted to a printed circuit board (PCB). The integrated circuit for which power is to be distributed may be electrically coupled to the PCB. The power laminate may include one or more power planes and one or more reference (i.e. ground) planes, with each pair of power/reference planes separated by a dielectric layer. The power laminate may also include a connector or other means for receiving power from an external power source. The power laminate may be electrically coupled to the integrated circuit, thereby enabling it to provide core power to the integrated circuit. The power laminate may also include a voltage regulator circuit, and a plurality of decoupling capacitors. In one embodiment, the power laminate may include a plurality of apertures which allow for the passing of connections between the integrated circuit and the PCB. The integrated circuit may be mounted to the PCB by solder balls of a ball-grid array, elestomeric connections of a land-grid array, or other type of mounting. The each of the solder balls or elastomeric connections may pass though one of the apertures of the power laminate.
摘要:
An apparatus and system comprising electrical interconnection devices (EIDs), such as printed wiring boards, semiconductor packages, and printed circuit boards, having novel via and signal trace positioning. The vias may be positioned off-center from the pattern of the surface pads. Via groups, or staircase vias, connect surface pads with vias extending into the electrical interconnection device. The via groups convert the pad geometry on the surface to a more open via pattern on one or more internal layers. The EID comprises a plurality of pads formed on a surface for providing electrical connections to another EID. A plurality of vias each extend from a corresponding pad to another layer of the printed wiring board. Each via is offset from a central location of its corresponding pad. A via group comprises a plurality of vias with a first via connecting a surface of the electrical interconnection device to a first inner layer electrically connects a pad on a surface of the electrical interconnection device to a second via. The second via extends from the first inner layer to a second layer of the electrical interconnection device. The centers of the first via and the second via are non-collinear. Another EID includes a uniformly spaced set of pads on the surface. Via groups, comprising a first set of vias and a second set of vias, extend from the uniformly spaced surface pads. Spacing among the second set of vias is non-uniform.