Controlling a skew time of switches of a switching regulator
AssigneeR2 Semiconductor, Inc.
InventorsLawrence M. Burns, James E. C. Brown
Life of this patent
Estimating the term…
Abstract
Embodiments for methods and apparatuses for controlling a skew time of switches of a switching voltage regulator are disclosed. One method includes generating a switching voltage through closing and opening of a series switch and a shunt switch as controlled by a series switch control signal and a shunt switch control signal. An error signal is generated that is proportional to a relative displacement of an on-interval of the series switch and an off-interval of the shunt switch. A relative delay of the series switch control signal and the shunt switch control signal is adjusted based on the error signal, and a regulated output voltage is generated based upon the switching voltage.
Claims22
A method of controlling a skew time of switches of a switching voltage regulator comprising:
- generating a switching voltage through closing and opening of a series switch and a shunt switch as controlled by a series switch control signal and a shunt switch control signal;
- generating an error signal proportional to a relative displacement of an on-interval of the series switch and an off-interval of the shunt switch, wherein the error signal is generated based on a gate voltage of the series switch and a gate voltage of the shunt switch;
- adjusting a relative delay of the series switch control signal and the shunt switch control signal based on the error signal;
- and
- generating a regulated output voltage based upon the switching voltage.
A switching voltage regulator, comprising:
- a series switch;
- a shunt switch;
- a switching controller operative to generating a switching voltage through closing and opening of the series switch and the shunt switch as controlled by a series switch control signal and a shunt switch control signal;
- a skew detector operative to generate an error signal proportional to a relative displacement of an on-interval of the series switch and an off-interval of the shunt switch;
- the switch controller further operative to adjust a relative delay of the series switch control signal and the shunt switch control signal based on the error signal, wherein the error signal is generated based on a gate voltage of the series switch and a gate voltage of the shunt switch;
- and
- the voltage regulator operative to generate a regulated output voltage based upon the switching voltage.
Dependencies are inferred from the claim text.