Patent ID: 8754620
Filing Date: 2014-06-17
Classification: G05F

Abstract:
1. A circuit arranged as a voltage regulator, the circuit comprising: an output terminal to produce an output signal; a first feedback path to monitor the output signal to detect variations in the output signal and to adjust the output signal to compensate for the variations, the first feedback path being adapted to compare a level of the output signal to a reference signal identifying a desired level of the output signal; a second feedback path to monitor the output signal to detect the variations in the output signal and to adjust the output signal to compensate for the variations, the second feedback path being adapted to respond to the variations in the output signal more quickly than the first feedback path; a pass transistor producing the output signal based on a state of the pass transistor; and a control transistor coupled to the pass transistor to control the state of the pass transistor according to variations in a drain current of the control transistor, wherein the first feedback path adjusts a gate voltage of the control transistor to adjust the drain current of the control transistor, and wherein the second feedback path adjusts a drain-to-source voltage difference of the control transistor to adjust the drain current of the control transistor.