Abstract:
PROBLEM TO BE SOLVED: To provide a low parasitic inductance power module that can deal with radio-frequency power conversion. SOLUTION: The power module 10 includes an upper layer 16, and a substrate 12 with an electric insulator and thermal coupling layer. The upper layer includes an electrically conductive pattern 17 and is constructed such that it accepts a power device 14. The electric insulator is arranged between the upper layer and the thermal coupling layer. The thermal coupling layer is formed such that it is thermally coupled with heat sink. The power module further includes: a first and second conductive layers 20 and 24; and at least one layer-shaped interconnecting part 18 having an insulation layer 22 arranged between the first and second conductive layers. The first conductive layer of the layer-shaped interconnecting part is electrically connected to the upper layer of the substrate. The electrical connector 42 has the surface side 19 of the power device connected to the second conductive layer of the layer-shaped interconnecting part. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To obtain a printed circuit board which can reduce skew by minimizing the influence of reflection characteristic of a through-hole. SOLUTION: On the surface layer of a back board substrate 30, the surface layer signal wires 6a, 6b are provided in different lengths according to difference in the lengths of the connector wires 3a, 3b, and these surface layer signal wires 6a, 6b are connected to the connector wires 3a, 3b. A digital signal a generated by the circuit on a daughter board substrate 10 reaches a through-hole 2a via an internal layer signal wire 1a wired in the internal layer of the daughter board substrate 10, and moreover it is transmitted to the internal signal wire 5a of the back board substrate 30 via the connector wire 3a, surface layer signal wire 6a, and a through-hole 4a. The digital signal a is further transferred to an internal layer signal wire 1a' via a through-hole 4a', a surface layer signal wire 6a', a connector wire 3a', and a through-hole 2a'. COPYRIGHT: (C)2004,JPO
Abstract:
The present invention is applicable to the field of communications technologies, and provides a perpendicular and orthogonal interconnection system and a communications device. The perpendicular and orthogonal interconnection system includes a first board group, a second board group orthogonal to the first board group, and a center backplane arranged between the first board group and the second board group, where the first board group includes a plurality of first boards parallel to each other, and the second board group includes a plurality of second boards parallel to each other; a plurality of curved male connectors is arranged on each of the first boards, a plurality of curved female connectors is arranged on each of the second boards, and the curved male connectors and the curved female connectors directly cooperate and are connected in one-to-one correspondence. In the present invention, the curved male connectors and the curved female connectors directly cooperate and are connected. When the perpendicular and orthogonal interconnection system is upgraded, only the board that permanently has the curved male connectors and the curved female connectors needs to be replaced, which is rather simple and shortens a signal link. Based on the foregoing advantages, the perpendicular and orthogonal interconnection system is applicable to various communications devices; therefore, its upgrade is convenient, signal quality is improved, heat dissipation is ideal, and material costs are saved.
Abstract:
A printed circuit board, PCB, device (10) comprises: - a first PCB module (4), - a second PCB module (11), and - at least two electrical components (2, 5) mounted on the first PCB module (4), wherein a signal from a first one of the electrical components (2) to a second one of the electrical components (5) is routed via the second PCB module (11).
Abstract:
The present invention discloses a circuit board interconnection architecture, which includes at least one first plugboard and at least two second plugboards substantially perpendicular to the first plugboard, where at least one of the first plugboard and the second plugboards is provided with several slots; the first plugboard and the second plugboards are mated and electrically connected by using signal connectors on both sides of the slots. The circuit board interconnection architecture solves a fitting precision problem of the first plugboard and the second plugboards in orthogonal directions. Even though there is an assembly tolerance between the first plugboard and the second plugboards, the connectors still satisfy assembly precision requirements, which can also avoid overall deformation of a first circuit board and a second circuit board after the first plugboard and the second plugboards are interconnected and mated orthogonally. The present invention further provides an electronic system and an electronic device which uses the electronic system.