Patent ID: 8664923

Claim:
A buck converter that includes an inductor, a first capacitor having an internal first series resistor having a first value and a controller arranged to monitor an output voltage of the converter, the controller comprising: a comparator that includes a differential pair that includes a first field effect transistor, a second field effect transistor and a current control device, wherein a source of the first field effect transistor is coupled to a source of the second field effect transistor and to the first current control device, and wherein the first and second field effect transistors are arranged to compare a feedback signal representative of an output voltage at an output of the buck converter with a reference voltage, and a modification circuit that includes an integrator, and converting circuitry that includes at least one field effect transistor, wherein the integrator is coupled to produce a voltage in response to voltage changes at a first terminal of the inductor, wherein the converting circuitry is coupled so as to convert the voltage to a correction current and to couple the correction current to at least one of the first and second field effect transistors so as to modify current flowing through at least one of the first and second field effect transistors to dampen out potential instability.