Electricity: power supply or regulation systems – Output level responsive – Using a three or more terminal semiconductive device as the...
Reexamination Certificate
2006-09-27
2008-10-07
Patel, Rajnikant B (Department: 2838)
Electricity: power supply or regulation systems
Output level responsive
Using a three or more terminal semiconductive device as the...
C323S285000, C323S222000, C363S021040
Reexamination Certificate
active
07432694
ABSTRACT:
Various systems and methods for implementing feedback in a switching regulator are disclosed. For example, various current feedback circuits are disclosed that include a current feedback node and a sense node. In addition, the current feedback circuits include an operational amplifier with two inputs. One of the inputs is electrically coupled to a power source via a first resistor, and may further be electrically coupled to a ground by closing a first switch or to the sense node by closing a second switch. The other input is electrically coupled to the ground via a second resistor, and may further be electrically coupled to the sense node by closing a third switch or to the power source by closing a fourth switch. The operational amplifier drives the current feedback node.
REFERENCES:
patent: 4672518 (1987-06-01), Murdock
patent: 4686617 (1987-08-01), Colton
patent: 4837495 (1989-06-01), Zansky
patent: 4885674 (1989-12-01), Varga et al.
patent: 7019507 (2006-03-01), Dittmer et al.
Brenden Jason
Lucore Brendan
Agere Systems Inc.
Hamilton DeSanctis & Cha
Patel Rajnikant B
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