ALEXANDRIA, Va., July 15 -- United States Patent no. 12,665,506, issued on June 23, was assigned to Rambus Inc. (San Jose, Calif.).

"Methods and circuits for constant on-time control of switching power supplies" was invented by Xin Zhang (San Jose, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A switching power supply employs constant-on-time control to maintain an output-voltage signal across a load. The output-voltage signal includes DC and ripple components. An error amplifier issues an error signal responsive to deviations between the DC component and a reference. A ripple injector integrates the DC and ripple components into a feedback signal. A constant on-time control circuit uses both the err...