Electricity: power supply or regulation systems – Output level responsive – Using a three or more terminal semiconductive device as the...
Reexamination Certificate
2007-03-27
2007-03-27
Patel, Rajnikant B. (Department: 2838)
Electricity: power supply or regulation systems
Output level responsive
Using a three or more terminal semiconductive device as the...
C323S266000, C307S402000
Reexamination Certificate
active
11061197
ABSTRACT:
An apparatus and method for regulating voltage levels. The apparatus includes a first transistor and a second transistor coupled to the first transistor. The first transistor is configured to receive a reference voltage, and the second transistor is configured to receive a feedback voltage and generate a first voltage. The first voltage is associated with a difference between the reference voltage and the feedback voltage. Additionally, the apparatus includes a third transistor coupled to the second transistor and configured to receive the first voltage from the second transistor and generate an output voltage in response to at least the first voltage. Moreover, the apparatus includes a fourth transistor coupled to the third transistor and configured to receive the output voltage from the third transistor and generate the feedback voltage, and a first current generation system coupled to the fourth transistor through at least a node.
REFERENCES:
patent: 4642482 (1987-02-01), Kasperkovitz et al.
patent: 5694076 (1997-12-01), Ishibashi
Luo Wenzhe
Ouyang Paul
Patel Rajnikant B.
Semiconductor Manufacturing International (Shanghai) Corporation
Townsend and Townsend / and Crew LLP
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