Electricity: electrical systems and devices – Safety and protection of systems and devices – With specific voltage responsive fault sensor
Reexamination Certificate
2011-08-16
2011-08-16
Fureman, Jared J (Department: 2836)
Electricity: electrical systems and devices
Safety and protection of systems and devices
With specific voltage responsive fault sensor
Reexamination Certificate
active
08000073
ABSTRACT:
A current-mode under voltage lockout (UVLO) circuit provides an output signal that indicates to connected devices whether a connected power supply is sufficient (i.e., of sufficient strength and stability) based on a comparison of a current that is proportional to the power supply and a reference current. The current-based UVLO circuit employs a reference current generator that is capable of providing a stable reference current and a voltage-to-current converter that provides a current proportional to the power supply voltage. A comparator compares the reference current to the current proportional to the power supply voltage and determines based on the magnitudes of the two currents whether the power supply voltage is sufficient or ‘good’ and generates an output signal indicating the status of the power supply voltage.
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patent: 2009/0303641 (2009-12-01), Abe
Rausch Gregory J.
Schuelke Robert John
Bauer Scott
Fureman Jared J
Kinney & Lange , P.A.
Polar Semiconductor, Inc.
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