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A power supply/backplane assembly and system wherein a substantially flat power supply assembly including a printed circuit, power converter modules, and heat sink is mounted directly to the rearwardly disposed surface of a backplane. The size of the power supply and the region at which it is mounte

A power supply/backplane assembly and system wherein a substantially flat power supply assembly including a printed circuit, power converter modules, and heat sink is mounted directly to the rearwardly disposed surface of a backplane. The size of the power supply and the region at which it is mounted substantially falls within the border of a fully defined region of the backplane. Flat copper traces carried by the power supply circuit board function to carry regulated power directly to the backplane via a power bolt system. Thus, conventional cabling is eliminated. The circuit board also is employed in conjunction with readily accessible connector components to provide for simplified wiring installation of support features such as the interaction between a supervisory panel and a front end a.c.-to-d.c. conversion component.

대표청구항 ▼

[ We claim:] [1.] In a system of electrical circuitry wherein functional circuit boards are supported by a housing in electrical association with a backplane, said backplane having a forward face with connectors connectable with said functional circuit boards, a plurality of adjacently disposed said

[ We claim:] [1.] In a system of electrical circuitry wherein functional circuit boards are supported by a housing in electrical association with a backplane, said backplane having a forward face with connectors connectable with said functional circuit boards, a plurality of adjacently disposed said connectors representing fully defined bus functions, said backplane having a rearward face with a surface region within a border and disposed opposite said connectors representing fully defined bus functions, said system having a path of fan driven air and a power input location, the improvement comprising:a plurality of power input connectors at said backplane rearward face adjacent said surface region border;a substantially rigid power circuit board having a plurality of regulated power output terminals, each being mechanically and electrically coupled with a select one of said power input connectors and fixedly supporting said power circuit board in parallel adjacency with said rearward face at said surface region, said power circuit board having a first surface and a second surface disposed oppositely from said first surface;at least one power converter mechanically coupled to said first surface having an input terminal for receiving a power input, having an output terminal assembly for providing a regulated d.c. output at a specified voltage level, and having an outwardly disposed heat transfer surface;a printed circuit supported upon said power circuit board having flat leads electrically coupled between said output terminal assembly and predetermined ones of said power output terminals; anda heat-sink mounted over said power circuit board in intimate heat transfer association with said heat transfer surface.