Patent ID: 9128505
Filing Date: 2015-09-08
Classification: G05F

Abstract:
1. A voltage regulator circuit, comprising: an amplifier having a first input coupled to a first reference voltage node; a power pass element having a control terminal coupled to an output of the amplifier, an input coupled to a power-supply input of the voltage regulator circuit, and an output coupled to an output of the voltage regulator circuit; a feedback circuit having an input coupled to the output of the power pass element and an output coupled to a second input of the amplifier; and a compensation module comprising a transistor operating in a saturation region, wherein a gate or base terminal of the transistor is coupled to a second reference voltage node, a drain or collector terminal of the transistor is coupled to the output of the amplifier, and a source or emitter terminal of the transistor is coupled to the power-supply input of the voltage regulator circuit, the transistor operative to increase a power gain of a combination of the amplifier and the compensation module.