Controller for complementary switches of a power converter and method of operation thereof
AssigneeTyco Electronics Power Systems, Inc.
InventorJouni Uusitalo
Life of this patent
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Abstract
A controller for, and related method of, controlling first and second alternately conducting switches of a power converter. In one embodiment, the controller includes a sensing circuit configured to sense a parameter representative of an input voltage of the power converter. The controller also includes a modification circuit configured to alter a drive signal to one of the first and second switches thereby modifying a delay between conduction intervals of the first and second switches as a function of the input voltage.
Claims20
A controller for use with a power converter including first and second alternately conducting switches, comprising:
- a sensing circuit configured to sense a parameter representative of an input voltage of said power converter;
- and
- a modification circuit configured to alter a drive signal to one of said first and second switches thereby modifying a delay between conduction intervals of said first and second switches as a function of said input voltage.
A method of controlling first and second alternately conducting switches of a power converter, comprising:
- sensing a parameter representative of an input voltage of said power converter;
- and
- altering a drive signal to one of said first and second switches thereby modifying a delay between conduction intervals of said first and second switches as a function of said input voltage.
A power converter having an input that receives an input voltage and provides an output voltage at a output thereof, comprising:
- a primary circuit, coupled to said input, including first and second alternately conducting switches;
- a transformer including a primary winding and a secondary winding, said primary circuit being coupled to said primary winding;
- a secondary circuit, coupled to said secondary winding, including first and second synchronous rectifier switches;
- and
- a controller, including:
- a sensing circuit that senses a parameter representative of said input voltage of said power converter, and
- a modification circuit that alters a drive signal to one of said first and second switches thereby modifying a delay between conduction intervals of said first and second switches as a function of said input voltage.
Dependencies are inferred from the claim text.