Patent ID: 8766613
Filing Date: 2014-07-01
Classification: G05F,H02M

Abstract:
1. A method of operating a voltage regulator circuit, comprising generating a control signal by an amplifier of the voltage regulator circuit, the control signal being generated based on a reference signal at an inverting input of the amplifier and a feedback signal at a non-inverting input of the amplifier; generating, by a driver responsive to the control signal, a driving current flowing toward an output node of the voltage regulator circuit, the driver being coupled between a first power node and the output node; generating the feedback signal responsive to a voltage level at the output node; and causing a transistor, coupled between the output node and a second power node, to operate in saturation mode during a period while the voltage regulator circuit is operating, wherein the causing the transistor to operate in saturation mode comprises supplying a bias signal at a gate of the transistor by a bias circuit outside the amplifier.