Electricity: power supply or regulation systems – In shunt with source or load – Using choke and switch across source
Reexamination Certificate
2011-01-11
2011-01-11
Vu, Bao Q (Department: 2838)
Electricity: power supply or regulation systems
In shunt with source or load
Using choke and switch across source
C323S271000, C323S225000, C323S226000, C323S270000, C323S282000
Reexamination Certificate
active
07868596
ABSTRACT:
A method of controlling a DC-DC step-up converter including at least one power switch and an energy storage inductor may include comparing a converter output voltage to a first threshold and generating a first comparison flag based on the converter output voltage comparison. The method may also include comparing a voltage across the energy storage inductor to a second threshold and generating a second comparison flag based on the second energy storage inductor voltage comparison. The method may further include controlling the at least one power switch as a function of a logic state of the first comparison flag and the second comparison flag, and stepwise adjusting the second threshold as a function of the first comparison flag and the second comparison flag to limit a ripple on the converter output voltage.
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EP Application No. 08104601.3, Extended European Search Report, mailed Apr. 23, 2010, 8 pgs.
Alessandro Agatino Antonino
Ribellino Calogero
Allen Dyer Doppelt Milbrath & Gilchrist, P.A.
Jorgenson Lisa K.
STMicroelectronics S.r.l.
Vu Bao Q
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