Electricity: electrical systems and devices – Safety and protection of systems and devices – With specific voltage responsive fault sensor
Reexamination Certificate
2006-12-12
2006-12-12
Easthom, Karl (Department: 2838)
Electricity: electrical systems and devices
Safety and protection of systems and devices
With specific voltage responsive fault sensor
C323S901000, C381S018000
Reexamination Certificate
active
07149068
ABSTRACT:
A circuit is provided for controlling a minimum operating voltage of an integrated control circuit of a switching power supply. The circuit includes at least one switch for switching the minimum operating voltage from a first voltage value to a second voltage value under conditions of low or null load of the switching power supply, and for switching the minimum operating voltage from the second voltage value to the first voltage value if the load of the switching power supply is greater than a predetermined load and the supply voltage is greater than the first voltage value. The minimum operating voltage can assume at least the first voltage value and the second voltage value, and the first voltage value is greater than the second voltage value. Also provided is a method for controlling a minimum operating voltage of an integrated control circuit of a switching power supply.
REFERENCES:
patent: 5757635 (1998-05-01), Seong
patent: 5861737 (1999-01-01), Goerke et al.
patent: 6381151 (2002-04-01), Jang
patent: 6597221 (2003-07-01), Hall et al.
patent: 6841977 (2005-01-01), Huang et al.
patent: 2002/0166073 (2002-11-01), Nguyen et al.
European Search Report dated Sep. 25, 2003 for European Application No. 03-4252320.0.
Adragna Claudio
Fagnani Mauro
Behm Harry R
Bongini Stephen
Easthom Karl
Fleit Kain Gibbons Gutman Bongini & Bianco P.L.
Jorgenson Lisa K.
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