Patent ID: 7205828
Filing Date: 2007-04-17
Classification: G05F

Abstract:
1. A voltage regulator configured to provide a regulated voltage to a load having a first conductance, the voltage regulator comprising: a feedback circuit configured to generate the regulated voltage; and a frequency compensation circuit comprising a first MOSFET device having a second conductance; wherein the frequency compensation circuit is configured to operate the first MOSFET device so that the second conductance varies in response to the first conductance of the load, wherein the feedback circuit comprises a second MOSFET device having a transconductance, wherein the frequency compensation circuit comprises a third MOSFET device having a third conductance, wherein the frequency compensation circuit is configured to operate the third MOSFET device so that the third conductance varies in response to the transconductance of the second MOSFET device, wherein the frequency compensation circuit comprises a first bias circuit and a second bias circuit, wherein the first bias circuit is configured to provide a first voltage to the third MOSFET device to cause the third conductance to vary in response to the transconductance of the second MOSFET device, wherein the second bias circuit is configured to provide a second voltage to the first MOSFET device to cause the second conductance to vary in response to the first conductance, wherein the first bias circuit comprises a fourth MOSFET device having a gate connection and a drain connection and a first current source connected to the gate connection, the drain connection, and a ground node, and wherein the first current source is configured to draw a first current from the fourth MOSFET device to generate the first voltage.