Patent ID: 8618779
Filing Date: 2013-12-31
Classification: H02M

Abstract:
1. A regulator circuit, comprising: a first switch configured to controllably connect a first voltage to an inductor; a second switch configured to controllably connect a second voltage to the inductor; a switch control circuit configured to control the first and second switches using a timer circuit; wherein the switch control circuit is configured to turn off the first switch and to turn on the second switch for a duration proportional to a difference between the first voltage and a third voltage, divided by the first voltage; wherein the switch control circuit is configured to turn on the first switch and to turn off the second switch for a duration proportional to the third voltage divided by the first voltage; wherein one of the first or third voltages corresponds to a desired output voltage; wherein the second voltage is less than the first and third voltages; and wherein the switch control circuit includes at least one of a peak threshold control circuit and a valley threshold control circuit and wherein the switch cycling period is adjustable using the at least one of the peak threshold control circuit and the valley threshold control circuit.