Output capacitor array of a switched-mode power supply

DETAILED DESCRIPTION It is accordingly an object of the invention to provide an output capacitor array of a switched-mode power supply, which overcomes the hereinafore-mentioned disadvantages of the heretofore-known devices of this general type and which provides an output filter array with low-inductance coupling of parallel-connected capacitors to current rails that carry direct current.
With the foregoing and other objects in view there is provided, in accordance with the invention, an output capacitor array of a switched-mode power supply, comprising at least one substrate having a layered stack of a positive-pole metal foil, an insulating foil, and a negative-pole metal foil; a plurality of electrically parallel connected individual capacitors disposed on the at least one substrate, the capacitors having positive poles each being electrically conductively connected to the positive-pole metal foil, and the capacitors having negative poles each being electrically conductively connected to the negative-pole metal foil; and a solid negative-pole metal rail being electrically conductively connected to the negative-pole metal foil, and a solid positive-pole metal rail being electrically conductively connected to the positive-pole metal foil and being insulated from the negative-pole metal rail, for carrying direct current in at least one of an input and output range of the output capacitor array.
In accordance with another feature of the invention, the metal foils of the at least one substrate are from 20 to 500 m and preferably 100 .
mu.
m thick.
In accordance with a further feature of the invention, the substrate is folded at least once in a meandering manner.
In accordance with an added feature of the invention, the metal rails and the metal foils are formed of copper.
In accordance with an additional feature of the invention, one of the rails is flat and is a cooling device or is mounted directly onto and is electrically insulated from or not insulated from a heat sink.
In accordance with yet another feature of the invention, the substrate assembled with the capacitors is disposed between and is electrically connected to the current rails with low inductance over a large surface area