Power switch for battery protection

A new battery charging, discharging, and protection circuit is achieved. The circuit comprises, first, a FET switch having gate, source, drain, and bulk. The FET switch may comprise either a NMOS device or a PMOS device. The source is coupled to a load terminal, and the drain is coupled to a battery...

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Bibliographic Details
Main Author STELLBERGER ACHIM
Format Patent
LanguageEnglish
Published 30.12.2003
Edition7
Subjects
CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
GENERATION
SYSTEMS FOR STORING ELECTRIC ENERGY
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Summary:A new battery charging, discharging, and protection circuit is achieved. The circuit comprises, first, a FET switch having gate, source, drain, and bulk. The FET switch may comprise either a NMOS device or a PMOS device. The source is coupled to a load terminal, and the drain is coupled to a battery terminal. Second, a means of controlling the FET switch gate and the bulk is included. The FET switch gate voltage determines the OFF and ON state of said FET switch. The bulk is switchably coupled between the battery terminal and the load terminal. A cascaded version is disclosed.
Bibliography:Application Number: US20010017601