摘要:
A socket and fabrication method provide enhanced performance. The socket includes a base, and a plurality of signal contacts disposed within the base. A grounding fence is also disposed within the base such that the grounding fence laterally isolates the signal contacts from one another. The use of a grounding fence therefore enables elimination or significant reduction of ground contacts and therefore provides more signaling opportunities for a given amount of real estate.
摘要:
An integrated circuit including a die, a power terminal and a ground terminal all mounted onto a substrate. The power terminal including a body and a first extension projecting from the body, and the ground terminal including a body and a second extension projecting from the body. The second extension on the ground terminal being adjacent to the first extension on the power terminal to offset inductance that is generated by supplying current to the die through the power terminal.
摘要:
A socket coupled to a circuit board to receive a package of microelectronic device has one or more electrical contacts coupled to its outer surfaces. Each contact provides a low inductance shunt connection from the side of the package to the circuit board. The contact includes multiple adjacent, electrically conductive members, each including a rigid portion and a flexible portion projecting from the rigid portion. The flexible portion is positioned to be in physical contact with a corresponding electrical conductor on an outer surface of the package when the package is coupled to the socket. At least one adjacent pair of the electrically conductive members conduct current in opposite directions to provide mutual inductance. The contact further includes a dielectric layer sandwiched between each two adjacent rigid portions of the conductive members.
摘要:
A series of plated through hole (PTH) vias are interconnected by traces that alternate between a top surface and a bottom surface of a dielectric board. The PTH vias in the series can be positioned to create a collinear inductive filter, a coil-type inductive filter, or a transformer. Multiple, electrically isolated series of interconnected PTH vias can be used as a multi-phase inductive filter in one embodiment. In another embodiment, multiple series of interconnected PTH vias are electrically connected by a linking portion of conductive material, resulting in a low-resistance inductive filter. Ferromagnetic material patterns can be embedded in the dielectric board to enhance the inductive characteristics of the interconnected via structures. In one embodiment, a closed-end pattern is provided with two series of interconnected vias coiling around the pattern, resulting in an embedded transformer structure. A method of producing an interconnected series of PTH vias includes providing a dielectric board having a series of holes. In some embodiments, the board includes an embedded ferromagnetic material pattern. The holes and the top and bottom surface of the dielectric board have a conductive material thereupon. Portions of the conductive material are selectively removed, resulting in the embedded inductive filter and/or transformer structure.
摘要:
An interposer includes two separate sets of pins, and inserts into two sockets on a printed circuit board. One set of pins supplies power to a step down converter (SDC) mounted on the interposer. The second set of pins provide inputs and outputs to an integrated circuit mounted on the interposer. One or more conductive traces in or on the interposer electrically connect an output of the SDC to an input of the integrated circuit, thus supplying regulated power to the integrated circuit through the interposer. The SDC and integrated circuit can be directly mounted on the interposer, or either or both can be mounted on packages that connect to the interposer. The SDC and integrated circuit can be flip chips or can be connected to the interposer or package using wirebonds. The packages can be pinned or connectable by solder bumps.
摘要:
A series of plated through hole (PTH) vias are interconnected by traces that alternate between a top surface and a bottom surface of a dielectric board. The PTH vias in the series can be positioned to create a collinear inductive filter, a coil-type inductive filter, or a transformer. Multiple, electrically isolated series of interconnected PTH vias can be used as a multi-phase inductive filter in one embodiment. In another embodiment, multiple series of interconnected PTH vias are electrically connected by a linking portion of conductive material, resulting in a low-resistance inductive filter. Ferromagnetic material patterns can be embedded in the dielectric board to enhance the inductive characteristics of the interconnected via structures. In one embodiment, a closed-end pattern is provided with two series of interconnected vias coiling around the pattern, resulting in an embedded transformer structure. A method of producing an interconnected series of PTH vias includes providing a dielectric board having a series of holes. In some embodiments, the board includes an embedded ferromagnetic material pattern. The holes and the top and bottom surface of the dielectric board have a conductive material thereupon. Portions of the conductive material are selectively removed, resulting in the embedded inductive filter and/or transformer structure.
摘要:
A power plane including a supply power pin receptacle, a first connector power pin receptacle, and a second power pin receptacle, where a first electrical resistance between the supply power pin receptacle and the first connector power pin receptacle is substantially equal to a second electrical resistance between the supply power pin receptacle and the second connector power pin receptacle.
摘要:
According to some embodiments, a device includes a first conductive plane electrically coupled to a first terminal associated with a first polarity and a second terminal associated with the first polarity, a second conductive plane electrically coupled to a third terminal associated with a second polarity, and a dielectric disposed between the first conductive plane and the second conductive plane. A first capacitance is present between the first terminal and the third terminal, a second capacitance is present between the second terminal and the third terminal, and the first capacitance and the second capacitance may be substantially dissimilar.
摘要:
Trace configurations for carrying high-speed digital differential signals provide for reduced conduction loss and improved signal integrity. In one embodiment, a circuit board has a first set of conductive traces disposed on non-conductive material, and a second set of conductive traces parallel to the first set and disposed within the conductive material. The second set is separated from the first set by non-conductive material. Corresponding traces of the first and second sets may be in a stacked configuration. In other embodiments, conductive material may be provided between corresponding traces of the first and second sets resulting in an “I-shaped” or “U-shaped” cross-section. In yet other embodiments, the trace configurations have “T-shaped” and “L-shaped” cross-sections.