REDUCING HIGH-FREQUENCY NOISE IN PULSE-SKIPPING MODE OF A VOLTAGE REGULATOR

摘要

Embodiments of systems, methods and apparatuses of a voltage regulator are disclosed. One apparatus of the voltage regulator includes a series switch element, wherein the series switch element comprises a plurality of partitioned series switch elements, a shunt switch element, and a switching controller. The switching controller is operative to control the series switch element and the shunt switch element in an idle state, wherein none of the plurality of partitioned series switch elements are active, control the series switch element and the shunt switch element in a burst state, wherein N of the plurality of partitioned series switch elements are active, and control the series switch element and the shunt switch element in a transition state, wherein M of the plurality of partitioned series switch elements are active, and wherein M is less than N.

主权项

1. A voltage regulator, comprising:
a series switch element connected between a first voltage supply and a common node, wherein the series switch element comprises a plurality of partitioned series switch elements; a shunt switch element connected between a second voltage supply and the common node; a switching controller that controls closing and opening of the series switch element and the shunt switch element, generating a switching voltage at the common node, and is operative to:
control the series switch element and the shunt switch element in an idle state, wherein none of the plurality of partitioned series switch elements are active;control the series switch element and the shunt switch element in a burst state, wherein N of the plurality of partitioned series switch elements are active; andcontrol the series switch element and the shunt switch element in a transition state, wherein M of the plurality of partitioned series switch elements are active, and wherein M is less than N.