Selector circuit for power management in multiple battery...

Details Selector circuit for power management in multiple battery... Selector circuit for power management in multiple battery...

2006-03-07

2006-03-07

Tibbits, Pia (Department: 2838)

Electricity: battery or capacitor charging or discharging

Battery or cell discharging

Regulated discharging

Reexamination Certificate

active

07009364

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.

REFERENCES:
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patent: 5497066 (1996-03-01), Drouillard et al.
patent: 5956222 (1999-09-01), Wittner et al.
patent: 6140801 (2000-10-01), Aoki et al.
patent: 6172478 (2001-01-01), Leppo et al.
patent: 6262562 (2001-07-01), Cummings et al.
patent: 6879134 (2005-04-01), Stanesti et al.
patent: EP-1074851 (2001-02-01), None
International Preliminary Examination Report from related PCT case, dated Aug. 12, 2005 (7pgs).

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