Patent ID: 7570035

Claim:
A hybrid loop voltage regulator circuit for voltage regulation of a load, said hybrid loop voltage regulator comprising: an amplifier having a first input terminal coupled to a reference voltage node, a second input terminal, and an output terminal; a pass element having a first terminal coupled to said output terminal of said amplifier, a second terminal coupled to a regulated voltage node, a third terminal for controlling the drive capability of said pass element, and a fourth terminal coupled to an unregulated input voltage node; a feedback network coupled to a regulated voltage node, a ground voltage node, and said second input terminal of said amplifier, said feedback network having nodes at various intermittent potentials from said regulated voltage node to said ground node; and a compare and control circuit coupled to said feedback network and said third terminal of said pass element; wherein said compare and control circuit augments the drive capability of said pass element in response to variations in the voltage of one of said nodes of said feedback network to improve the transient performance of the circuit.