REDUNDANT POWER SUPPLY ARCHITECTURE WITH VOLTAGE LEVEL RANGE BASED LOAD SWITCHING
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United States of America Patent
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Issued Date -
Jul 10, 2008
app pub date -
Jan 4, 2008
filing date -
Jan 4, 2007
priority date (Note) -
Abandoned
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Abstract
A voltage level range based redundant power supply architecture is described wherein at least two power supplies are connected to an external load and maintained in an energized state. However, only one of the power supplies sources all the current requirements of the load while the other power supply remains in standby mode. This is achieved by manually or programmatically adjusting the voltage output of a first power supply and a second power supply connected in parallel to the external load such that the first power supply always outputs a higher potential difference at the point of load than the second power supply, thereby implementing a voltage level range of outputs of the power supplies so as to guarantee that all the current requirement of the load is sourced from the first power supply. The second power supply remains energized and upon failure of the first power supply instantaneously takes over the function of the failed power supply and powers the load.
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