Resonance conversion device
AssigneeAcer Incorporated
InventorTzu-Tseng Chan
Life of this patent
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Abstract
A resonance conversion device including an LLC synchronous resonance converter, a synchronous rectification controller, and a dead time adjustment circuit is provided. The LLC synchronous resonance converter includes a resonance tank and multiple synchronous rectification switches. The synchronous rectification controller controls the synchronous rectification switches, which are turned on with a delay based on a dead time length. The dead time adjustment circuit inductively couples electric energy at an output of the LLC synchronous resonance converter to the resonance tank, and provides a dead time control signal according to a resonance voltage variation of the resonance tank so that the synchronous rectification controller adjusts the dead time length according to the dead time control signal.
Claims10
A resonance conversion device, comprising:
- an LLC synchronous resonance converter comprising a resonance tank, a main transformer, and a plurality of synchronous rectification switches;
- a synchronous rectification controller coupled to the LLC synchronous resonance converter and configured to control the plurality of synchronous rectification switches, wherein the plurality of synchronous rectification switches are turned on with a delay based on a dead time length;
- and
- a dead time adjustment circuit coupled to the LLC synchronous resonance converter and the synchronous rectification controller, configured to inductively couple an electric energy at an output of the LLC synchronous resonance converter to the resonance tank, and providing a dead time control signal according to a resonance voltage variation of the resonance tank for allowing the synchronous rectification controller to adjust the dead time length according to the dead time control signal.
Dependencies are inferred from the claim text.