Electricity: power supply or regulation systems – In shunt with source or load – Using choke and switch across source
Reexamination Certificate
2006-07-25
2006-07-25
Vu, Bao Q. (Department: 2838)
Electricity: power supply or regulation systems
In shunt with source or load
Using choke and switch across source
C323S284000, C323S274000
Reexamination Certificate
active
07081740
ABSTRACT:
A digitally-controlled, DC/DC converter includes at least one switched-mode power stage for the purpose of converting an input voltage (Vin) into an output voltage (Vout); the power stage including at least one controllable switching device, which is turned ON and OFF by a control device with temporal resolution Δt. The converter further includes a duty cycle control mechanism for controlling the duty cycle of the controllable switching device, the duty cycle control mechanism including a mechanism for estimating the target duty cycle, a duty cycle quantization mechanism for determining, for a target duty cycle estimate, a set of quantized ON time/OFF time pairs suitable for controlling the switching device, and a sequencing mechanism for determining the turn ON and turn OFF times of said controllable switching device by choosing, cycle by cycle, an ON time/OFF time pair from the set of quantized ON time/OFF time pairs, choosing in such a manner that the time-averaged value of the resultant duty cycle is equivalent to the estimated target duty cycle.
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patent: 6801024 (2004-10-01), Bernardon
patent: 6815936 (2004-11-01), Wiktor et al.
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patent: 6977489 (2005-12-01), Isham
Kiawe Forest LLC
Vu Bao Q.
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