Over-voltage protected battery charger with bypass

Details Over-voltage protected battery charger with bypass Over-voltage protected battery charger with bypass

2011-03-08

2011-03-08

Tso, Edward (Department: 2858)

Electricity: battery or capacitor charging or discharging

Battery or cell charging

C320S128000

Reexamination Certificate

active

07902794

ABSTRACT:
A battery charger comprises charging circuitry for providing a battery charging voltage responsive to an input voltage. First circuitry provides both over-voltage protection and an input voltage bypass signal responsive to the input voltage. The first circuitry includes a low impedance switch having a resistance of at least 500 mΩ for connecting the input voltage to an output voltage node. The first circuit also includes a higher impedance switch having a resistance of at least 1000 mΩ for providing the input voltage as a voltage bypass signal.

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patent: 1999-0044601 (1999-06-01), None
patent: 2005-0057693 (2005-06-01), None
Jin-Yong Bae; Office Action, Korean Patent Application No. 2008-57720; Apr. 29, 2010.

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