Patent ID: 8766612

Claim:
An SMPS (switched mode power supply) controller operable in a switching converter including an energy storage inductor coupled between a power source and a load, and including a transistor switch coupled to the inductor at a switch node, the switching converter being controlled to supply a regulated voltage from the power source to the load by controlling a switching duty cycle of the transistor switch, comprising: a switching signal generator coupled to, or configured to couple to, the transistor switch, and configured to provide a switching signal to the transistor switch with a switching duty cycle based in part on a difference signal; an error amplifier including a first input receiving a reference signal having a voltage; and a second input receiving a feedback signal having a voltage representing the load voltage; the error amplifier configured to provide the difference signal representing a difference between the reference signal and the feedback signal; and a compensation circuit electrically connected to an output of the error amplifier, and configured to provide slew rate control for the difference signal output from the error amplifier, the compensation circuit including: a control circuit configured to provide a control signal generated as a function of the difference between the reference signal and the feedback signal; and a compensation amplifier configured to adjust the slew rate of the difference signal output from the error amplifier, the compensation amplifier responsive to the control signal to adjust an operating current of the compensation amplifier, and thereby correspondingly adjust the slew rate of the difference signal.