Electricity: power supply or regulation systems – In shunt with source or load – Using choke and switch across source
Reexamination Certificate
2007-01-09
2007-01-09
Vu, Bao Q. (Department: 2838)
Electricity: power supply or regulation systems
In shunt with source or load
Using choke and switch across source
C323S284000, C323S282000, C323S285000
Reexamination Certificate
active
11225532
ABSTRACT:
A phase removal control system for a multiphase DC/DC converter including combination logic, disable logic, and a current detector. The multiphase DC/DC converter includes first and second output phase circuits and a controller providing first and second PWM signals for the first and second output phase circuits, respectively. The combination logic combines the second PWM signal with the first PWM signal when a phase enable signal is de-asserted and while a current detect signal indicates current above a predetermined minimum current level. The disable logic passes the second PWM signal to the second output phase circuit when the phase enable signal is asserted and blocks the second PWM signal from the second output phase circuit when the phase enable signal is de-asserted. The current detector has an input for sensing current through the second output phase circuit and an output providing the current detect signal indicative thereof.
REFERENCES:
patent: 6912144 (2005-06-01), Clavette
patent: 7019502 (2006-03-01), Walters et al.
patent: 7023182 (2006-04-01), Kleine et al.
patent: 7030596 (2006-04-01), Salerno et al.
patent: 7031174 (2006-04-01), Lipcsei
Jochum Thomas A.
Kleine John S.
Intersil America's Inc.
Stanford Gary R.
Vu Bao Q.
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