Voltage regulator including constant loop gain control

An integrated circuit for controlling a voltage regulator having a feedback loop with a loop gain, comprising:

• a pair of switching transistors for generating a phase voltage responsive to an input voltage and drive control signals;
• driver circuitry for generating the drive control signals responsive to a PWM signal;
• first circuitry for generating the PWM signal responsive to a voltage error signal, a filtered output voltage signal and a ramp voltage signal, wherein the filtered output voltage is used for substantially removing a loop gain change caused by a voltage divider circuit connected to an output of the voltage regulator;
• and
• a voltage compensation circuit for generating the voltage error signal responsive to a feedback voltage and a reference voltage.

A method of voltage regulation comprising the steps of:

• generating a regulated output voltage by utilizing a feedback loop having a loop gain, responsive to an input voltage and at least one PWM signal;
• monitoring a feedback voltage through a voltage divider;
• monitoring the regulated output voltage;
• filtering the regulated output voltage;
• generating a voltage error signal responsive to the feedback voltage and the reference voltage;
• removing a loop gain change caused by the voltage divider;
• generating the at least one PWM signal responsive to the voltage error signal.