Patent 7327128 was granted and assigned to Intel on February, 2008 by the United States Patent and Trademark Office.
A number of output phases of a switching power supply are controlled, to regulate its output. An under-voltage condition is responded to, by overriding the control of the output phases, forcing some or all of the phases on, depending on a detected magnitude of a change in the power supply load. Other embodiments are also described and claimed.