Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
February 10, 2009
Patent Application Number
11369440
Date Filed
March 7, 2006
Patent Citations Received
Patent Primary Examiner
Patent abstract
A selector circuit configured to select among a DC power source and a plurality of batteries for an electronic device. The selector circuit is responsive to an output signal from an associated power management unit. The selector circuit is further configured to permit parallel operation of two or more of the batteries. The selector circuit may further act to independently verify power conditions and override instructions from the PMU in certain instances to enhance power supply safety and battery life such as by preventing inter battery current flow from a higher potential battery to a lower potential battery coupled in parallel.
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