Electricity: power supply or regulation systems – In shunt with source or load – Using a three or more terminal semiconductive device
Reexamination Certificate
2006-11-14
2006-11-14
Patel, Rajnikant B. (Department: 2838)
Electricity: power supply or regulation systems
In shunt with source or load
Using a three or more terminal semiconductive device
C323S268000
Reexamination Certificate
active
07135841
ABSTRACT:
Method and circuit for automatic correction of emulated inductor current without knowledge of actual inductor current ramp for an emulated current mode (ECM) PWM switching regulator. In an ECM-PWM switching regulator a compensation ramp component is usually added to an up-slope. An excess ramp component may also be added compared to actual inductor current. According to one embodiment of the present invention, an integrating negative feedback circuit is employed to reduce both extra components. According to another embodiment, a single integrating negative feedback loop is added to the ECM-PWM regulator to retain the compensation ramp component while reducing the excess ramp component. According to a further embodiment, excess ramp component is reduced by adding the integrating negative feedback loop at an end stage of the circuit. Finally, the feedback loop with two duplicate track-and-hold circuitry may be added to reduce the excess ramp component, while retaining the compensation component.
REFERENCES:
patent: 5428267 (1995-06-01), Peil
patent: 6377032 (2002-04-01), Andruzzi et al.
patent: RE38940 (2006-01-01), Isham et al.
U.S. Appl. No. 10/835,616, Tomiyoshi.
U.S. Appl. No. 10/703,960, Broach et al.
U.S. Appl. No. 10/780,375, Broach et al.
U.S. Appl. No. 10/780,207, Broach et al.
U.S. Appl. No. 10/861,872, Broach et al.
Robert W. Erickson and Dragan Maksimovic, Editors,Fundamentals of Power Electronics, pp. 439-487, 654-657, 834-839, 2ndEdition, Kluwer Academic Publishing, Norwell, Massachusetts, 2001.
Abraham I. Pressman,Switching Power Supply Design, pp. 143-165, 2ndEdition, McGraw Hill, New York, New York, 1998.
Raymond B. Ridley, “A New Continuous Time Model for Current-Mode Control,”IEEE Transaction on Power Electronics, vol. 6, No. 2, Apr. 1991, pp. 271-280.
Hariman George A.
Tomiyoshi Kenji
Darby & Darby PC
Gaffney Matthew M.
Patel Rajnikant B.
LandOfFree
Emulated inductor current automatic correction without... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Emulated inductor current automatic correction without..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Emulated inductor current automatic correction without... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3624283