Power supply control
AssigneeIntersil Americas Inc.
InventorsWeihong Qiu, Shangyang Xiao, Jun Liu
Life of this patent
Estimating the term…
Abstract
A method includes simultaneously driving a load via first and second magnetically coupled regulator phases for a first duration, uncoupling one of the phases from the load after the first duration, and, after uncoupling the one phase from the load, allowing a current through the one phase to decay. For example, such a method allows energy stored in the uncoupled phase to be recaptured to the output transient response of a power supply.
Claims32
A method, comprising:
- simultaneously driving a load via first and second magnetically coupled regulator phases for a first duration;
- uncoupling one of the phases from the load after the first duration;
- and
- after uncoupling the one phase from the load, allowing a current through the one phase to decay.
A method, comprising:
- causing a first current to flow from an input power source, through a first regulator phase, and into a load;
- and
- magnetically inducing with the first current a second current that flows through a second regulator phase and into the input power source.
A controller operable to:
- simultaneously drive a load via first and second magnetically coupled windings for a first duration;
- uncouple one of the windings from the load after the first duration;
- and
- allow a current through the one winding to decay after uncoupling the one winding from the load.
A controller operable:
- to direct a first current from an input power source, through a first regulator phase, and into a load;
- and
- to direct into the input power source a second current magnetically induced by the first current in a second regulator phase.
A power supply, comprising:
- first and second magnetically coupled windings;
- and
- a controller operable
- to simultaneously drive a load via the first and second magnetically coupled windings for a first duration;
- to uncouple one of the windings from the load after the first duration;
- and
- to allow a current through the one winding to decay after uncoupling the one winding from the load.
A power supply, comprising:
- first and second regulator phases;
- and
- a controller operable
- to direct a first current from an input power source, through the first regulator phase, and into a load;
- and
- to direct into the input power source a second current magnetically induced by the first current in the second regulator phase.
A system, comprising:
- a load;
- and
- a power supply including
- first and second magnetically coupled windings;
- and
- a controller operable
- to simultaneously drive the load via the first and second magnetically coupled windings for a first duration;
- to uncouple one of the windings from the load after the first duration;
- and
- to allow a current through the one winding to decay after uncoupling the one winding from the load.
A system, comprising:
- a load;
- and
- a power supply including
- first and second regulator phases;
- and
- a controller operable
- to direct a first current from an input power source, through the first regulator phase, and into the load;
- and
- to direct into the input power source a second current magnetically induced by the first current in the second regulator phase.
Dependencies are inferred from the claim text.