Interleaved resonant converter
AssigneeTexas Instruments Incorporated
InventorHrishikesh Ratnakar Nene
Life of this patent
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Abstract
One example includes an interleaved resonant converter circuit. The circuit includes a plurality of resonant converter circuits that are each coupled to an output node and are configured to collectively generate an output voltage on the output node in response to a respective plurality of sets of switching signals at each of a respective plurality of phases. The circuit also includes a switching controller configured to generate each of the plurality of sets of switching signals having a variable duty-cycle relative to each other at each of the plurality of phases.
Claims14
An electronic apparatus comprising:
- a plurality of resonant converter circuits that are each coupled to an output node and are configured to collectively generate an output voltage on the output node in response to a respective plurality of sets of switching signals;
- and
- a switching controller configured to generate each of the plurality of sets of switching signals, the plurality of sets of switching signals including a first set of switching signals and a second set of switching signals;
- wherein the switching controller is configured to substantially align a falling-edge of each of at least one switching signal in the first set of switching signals with a falling-edge of a respective switching signal of the second set of switching signals when each switching signal of the first set of switching signals has a first duty-cycle and each switching signal of the second set of switching signals has a second duty-cycle that differs from the first duty-cycle.
An interleaved resonant converter circuit comprising:
- a plurality of resonant converter circuits that are each coupled to an output node and are configured to generate an output voltage on the output node at each of a plurality of phases, wherein each resonant converter circuit comprises:
- a transformer configured to induce a switching current from a primary winding of the transformer to a secondary winding of the transformer, wherein the output voltage is generated in response to the induced switching current through the secondary winding of the transformer;
- and
- at least one switch configured to be activated in response to a respective one of a plurality of sets of switching signals to provide the switching current through the primary winding during a respective one of the plurality of phases;
- and
- a switching controller configured to generate each of the plurality of sets of switching signals based at least partially on a current mismatch associated with each of the plurality of resonant converter circuits and to substantially align a falling-edge of each of at least one switching signal of a first set of switching signals of the plurality of sets of switching signals with a falling-edge of a respective switching signal of a second set of switching signals of the plurality of sets of switching signals when each switching signal of the first set of switching signals has a first duty-cycle and each switching signal of the second set of switching signals has a second duty-cycle that differs from the first duty-cycle.
Dependencies are inferred from the claim text.