Regulation of bi-directional flyback converter
AssigneeKoninklijke Philips Electronics N.V.
InventorsLaurence Bourdillon, Demetri Giannopoulos, Nai-Chi Lee
Life of this patent
Estimating the term…
Abstract
A bi-directional flyback circuit includes a primary side switch that regulates the re-circulated energy to achieve substantially zero voltage switching (ZVS) and a secondary-side switch that regulates the output voltage. No feedback circuit between an output side and an input side of the bi-directional flyback circuit is needed for regulating the output voltage. The amount of recirculating energy required to achieve ZVS, and to maintain output regulation is kept substantially at a minimum.
Claims17
An electronic circuit, comprising:
- a dc—dc bi-directional flyback circuit which has a primary side switch that operates at zero voltage switching without a feedback circuit between an output side and an input side of the dc—dc bi-directional flyback circuit;
- and
- a primary side controller that regulates an on-time of said primary side switch to substantially achieve a condition optimal circulating energy in said flyback circuit.
A method of controlling a do-dc bi-directional flyback circuit, comprising:
- providing a primary side switch;
- controlling said primary side switch to achieve substantially optimal circulating energy in the circuit, without providing feedback from a secondary side to a primary side of the circuit;
- providing a primary side controller that regulates an on-time of said primary side switch to substantially achieve a condition of optimal circulating energy in said flyback circuit.
Dependencies are inferred from the claim text.