Controller for complementary switches of a power converter and method of operation thereof
First Claim
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1. 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.
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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.
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Citations
20 Claims
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1. A controller for use with a power converter including first and second alternately conducting switches, comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of controlling first and second alternately conducting switches of a power converter, comprising:
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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. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A power converter having an input that receives an input voltage and provides an output voltage at a output thereof, comprising:
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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. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification