Power fault protection in a computer system having multiple powe

Details Power fault protection in a computer system having multiple powe Power fault protection in a computer system having multiple powe

1994-05-09

1997-04-22

Beausoliel, Jr., Robert W.

G06F 132

Patent

active

056235968

ABSTRACT:
A power system fault handling mechanism for portable electronic devices having multiple power supplies. A safety-net circuit is triggered when a power fault condition is detected. The safety-net circuit is a diode-based bridging circuit which couples all available power supplies to the power load, yet avoids feeding power back from any of the supplies to one another. This ensures that the load continues to receive power after a fault condition occurs without interruption. A microcontroller may then implement a routine to switch to a working power supply so that the device may resume normal operation. The power system fault detection mechanism therefor allows for the switching between system power supplies without disrupting a running process.

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