Abstract:
In one embodiment, the present invention includes a method of mounting a semiconductor device to a first side of a circuit board; and mounting at least one voltage regulator device to a second side of the circuit board, the second side opposite to the first side. The voltage regulator devices may be output filters, inductors, capacitors, and the like. In certain embodiments, the devices may be located directly underneath the semiconductor device.
Abstract:
A LSI package encompasses: an interposer having board-connecting joints, which facilitate connection with a printed wiring board, and module-connecting terminals, part of the module-connecting terminals are assigned as interposer-site monitoring terminals; a signal processing LSI mounted on the interposer; and an I/F module having a plurality of interposer-connecting terminals, which are arranged to correspond to arrangement of the module-connecting terminals, and a transmission line to establish an external interconnection of signal, which is transmitted from the signal processing LSI, part of the interposer-connecting terminals are assigned as module-site monitoring terminals. The interposer-site and module-site monitoring terminals are configured to flow a monitoring current to confirm electric contact between the signal processing LSI and the I/F module.
Abstract:
Disclosed is a PCI mezzanine card (PMC) with pin-grid-array (PGA) which can be applied onto a two or more central processing unit (CPU) socket equipped mother board When one of the CPU sockets is not installed with a CPU, the PMC communicates with the mother board through the CPU socket with its PGA interface. An IC package mounted on the PMC can communicate with the mother board through the PMC.
Abstract:
A processor mounted to a circuit board is provided with regulated voltage through lower-inductance circuit board traces by mounting a voltage regulator module for the processor, on the side of the circuit opposite to the processor. Current from the voltage regulator is provided to the processor by way of one or more conductors between the regulator and processor that extend through the circuit board from one side to the other. Inductance attributable to lead length is reduced by locating the voltage regulator close to its load. Circuit board space on the processor side of the circuit board is increased by moving the voltage regulator to the opposite side.
Abstract:
An electrical component, such as a trace, signal line, or contact pad connected to the trace or signal line, is covered by one or more layers. The electrical component is connected directly to an electrical device by forming an opening through the one or more layers. The opening exposes a portion of the electrical component. A connector, such as a solder ball, a pin contact, or a wire bond, is then attached to the exposed portion of the electrical component. The connector connects directly to another electrical device to create an electrical connection between the electrical component and the electrical device. The electrical device may be configured, for example, as a second signal line or contact pad in another stripline circuit, a microstrip circuit, an integrated circuit, or an electrical component.
Abstract:
A method and an apparatus for improving the delivery and filtering of power to a semiconductor device is disclosed by organizing out interconnects (pins, balls, pads or other interconnects) used to carry power in a striped configuration that shortens the conductive path required between a power source and a semiconductor device and that reduces the resistance of that conductive path.
Abstract:
Semiconductor chip (1101) of a ball grid array device (1100) is mounted onto tape substrate (1102) using attach adhesive (1103). The metal layer on the top surface of substrate (1102) uses between about 30% to 90% of its area for connecting lines (1104), and only the remainder for members/rings (1105) and terminals (1106). Routing of differential pair signals and large numbers of signals on a single layer tape package are feasible. This embodiment creates an inexpensive high performance tape ball grid array package for chip-scale devices. Terminals (1106) serve the connection (by bonding wires or reflow bumps) to the chip contact pads. Inserted in members/rings (1105) are the conductive pins (1107), which serve as anchors for the solder bodies/balls (1108). Pins (1107) are substantially insensitive to the thermomechanical stresses, which occur in device (1100) during assembly, testing and operation.
Abstract:
A sheet capacitor of the invention has a contact portion formed in a through-hole requiring electrical connection with an IC connection pin among the through-holes in which the IC connection pins are inserted, and a capacitor element connected to the contact portion. Another sheet capacitor of the invention includes an insulating board and a capacitor element mounted on the insulating board. The insulating board has a connection land with an IC at the upper side, and a connection land with a printed wiring board at the lower side. The capacitor element and connection lands at the upper and lower side of the insulating board are connected with each other electrically. In any one of these configurations, a capacitor element of large capacity and low ESL is connected closely to the IC, and the mounting area of the peripheral circuits of the IC can be increased.
Abstract:
A method for attaching an IC package to a circuit board, the IC package having a plurality of electrical contacts in an arrangement having a perimeter, first positions the IC package adjacent to the circuit board. Then, electrically connects the IC package to the circuit board through the plurality of electrical contacts. The method finally, disposes at least one anchor mechanically attaching the IC package to the circuit board, the anchor disposed at a location outside of the perimeter of the plurality of electrical contacts. The type, quantity, and exact geometry of the anchors depend on the specific design parameters of the IC package and circuit board.
Abstract:
A microprocessor packaging architecture using a modular circuit board assembly that provides power to a microprocessor while also providing for integrated thermal and electromagnetic interference (EMI) is disclosed. The modular circuit board assembly comprises a substrate, having a component mounted thereon, a circuit board, including a circuit for supplying power to the component, and at least one conductive interconnect device disposed between the substrate and the circuit board, the conductive interconnect device configured to electrically couple the circuit to the component.