Energy lockout in response to a planar catastrophic fault
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United States of America Patent
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Jun 14, 2016
Grant Date -
Nov 19, 2015
app pub date -
May 15, 2014
filing date -
May 15, 2014
priority date (Note) -
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Abstract
A computer planar includes an enable signal line for providing an enable signal to an external power supply, wherein the external power supply will not turn on unless the enable signal is active high. During normal operation, an auxiliary power source maintains an active high enable signal on the enable signal line, which includes a fuse. However, a fault protection circuit coupled to the enable signal line can pull down the enable signal line in response to a fault, such that the fuse is permanently opened. Once the fuse is open, the external power supply cannot be enabled and further damage to the computer planar is prevented.
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