Patent ID: 8138740

Claim:
A voltage regulator comprising: an input terminal configured to be coupled to a voltage source; an output terminal configured to be coupled to a load; a pulse width modulation (PWM) circuit for generating an output having a desired voltage level at the output terminal, the PWM circuit including a switch that is pulsed ON and OFF based on a first voltage that is a function of a voltage ramp that increases non-linearly with respect to time and a second voltage that is a function of a voltage appearing at the output terminal; and an inductor disposed between the input terminal and the output terminal, wherein the switch controls current flow from the inductor to ground, wherein the first voltage is equal to a sum of a voltage level of the voltage ramp and a voltage level sensed from a point between the inductor and the switch, and the second voltage is a difference between a reference voltage and a voltage level proportional to the voltage level appearing at the output terminal.