Power supply distribution system employing non-isolated DC/DC converters
First Claim
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1. A power supply module for a backplane comprising:
- a plurality of independent voltage converter units distributed in parallel between a voltage input and a voltage output, said voltage converter units maintaining current sharing between multiple units;
the voltage converter units each comprising a non-isolated back-end DC-to-DC converter, wherein the voltage input comprises an intermediate DC power source sharing a common return with the voltage output; and
means for monitoring the status of each voltage converter unit to identify a power supply fault.
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Abstract
In a method and apparatus for partitioning and packaging a power generation and distribution system, a plurality of power supply modules are distributed along the length of the backplane such that backplane voltage drops are minimized and such that power supply currents flow essentially orthogonal to the signal connections between the backplane slots. In this manner, signal interference is minimized and the need for bus bars on the backplane are substantially reduced or eliminated.
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Citations
10 Claims
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1. A power supply module for a backplane comprising:
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a plurality of independent voltage converter units distributed in parallel between a voltage input and a voltage output, said voltage converter units maintaining current sharing between multiple units;
the voltage converter units each comprising a non-isolated back-end DC-to-DC converter, wherein the voltage input comprises an intermediate DC power source sharing a common return with the voltage output; and
means for monitoring the status of each voltage converter unit to identify a power supply fault. - View Dependent Claims (2, 3)
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4. A power supply system for a backplane for receiving daughter cards comprising:
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an isolated front end for generating an intermediate DC voltage coupled to a system backplane having signal traces between a plurality of daughter card connectors; and
at least one non-isolated back-end voltage converter coupled to said system backplane for convertng said intermediate DC voltage to an output voltage required as a daughter card input voltage by the daughter cards, said at least one back-end voltage converters being configured such that current flow over power traces between the at least one back-end voltage converters and the daughter card connectors is substantially orthogonal to current flow through said signal traces of said system backplane. - View Dependent Claims (5, 6, 7, 8, 9, 10)
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Specification