DC-DC converter
AssigneeInternational Rectifier Corporation
InventorRay King
Life of this patent
Estimating the term…
Abstract
A DC/DC converter interconnecting a first DC voltage source having a first potential and a second DC voltage source having a second potential and having a stepup/stepdown transformer coupled between the two voltage sources; a controlled switching circuit coupled to the transformer for switching pulsed direct current through the transformer between the voltage sources; and a controller controlling a switching operation of the switching circuit to allow the pulsed direct current to flow between the two voltage sources, whereby current flows between the two voltage sources in dependence on load demands imposed on respective ones of the two voltage sources.
Claims20
A DC-to-DC converter for interconnecting two DC voltage sources comprising a first source having a first potential and a second source having a second potential, the converter allowing current to be drawn from either voltage source by a load connected to either voltage source, the converter comprising:
- a transformer coupling the first and second voltage sources and loads connected to each voltage source;
- a first controlled switch coupling the transformer and the second voltage source;
- a second controlled switch coupling the transformer and the second voltage source;
- a third controlled switch coupling the transformer and the first voltage source;
- a fourth controlled switch coupling the transformer and the first voltage source;
- a controller for repetitively turning on and off the first and fourth controlled switches simultaneously and alternately turning on and off the second and third controlled switches simultaneously;
- whereby current flows from the first voltage source to the second voltage source or from the second voltage source to the first voltage source depending on power demands placed on the first and second voltage sources.
A DC/DC converter interconnecting a first DC voltage source having a first potential and a second DC voltage source having a second potential, the converter comprising:
- a stepup/stepdown transformer coupled between the two voltage sources;
- a controlled switching circuit coupled to the transformer for switching pulsed direct current through the transformer between the voltage sources;
- and
- a controller controlling a switching operation of the switching circuit to allow the pulsed direct current to flow between the two voltage sources, whereby current flows between the two voltage sources in dependence on load demands imposed on respective ones of the two voltage sources.
A DC-to-DC converter comprising:
- a transformer having a first pair of windings on opposite sides of a central tap and a second pair of windings each connected to an outer terminal of a winding of the first pair;
- a first pair of alternately operable electronic switches each connected between an outer terminal of the first pair of windings and one pole of a first direct current voltage source, the first direct current voltage source having another pole connected to a ground connection;
- a second pair of alternately operable electronic switches each connected between an outer terminal of the second pair of windings and one pole of a second direct current voltage source, the second direct current voltage source having another pole connected to the ground connection;
- and
- respective drivers for the electronic switches and a controller for the drivers to turn on one switch of the first pair and turn on one switch of the second pair simultaneously and alternately turn on a second switch of the first pair and turn on a second switch of the second pair simultaneously, thereby allowing pulsed direct current to flow between the two voltage sources in dependence on load demands imposed on the two voltage sources.
Dependencies are inferred from the claim text.