Zero Voltage Switching Half-Bridge Converters
First Claim
1. A converter comprising:
- a primary switch network coupled to a power source, wherein the primary switch network comprises a plurality of power switches;
a controller configured to generate gate drive signals for the plurality of power switches;
a secondary rectifier coupled to an output;
a first transformer having a first winding coupled to the primary switch network, a second winding coupled to the secondary rectifier and a third winding coupled to the controller; and
a second transformer having a fourth winding coupled to the primary switch network, a fifth winding coupled to the secondary rectifier and a sixth winding coupled to the controller, wherein a voltage signal from the third winding and/or the sixth winding is processed to provide a feedback of a voltage at the output.
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Accused Products
Abstract
A power converter comprises a primary switch network coupled to a power source, wherein the primary switch network comprises a plurality of power switches, a controller configured to generate gate drive signals for the plurality of power switches, a secondary rectifier coupled to an output, a first transformer having a first winding coupled to the primary switch network, a second winding coupled to the secondary rectifier and a third winding coupled to the controller and a second transformer having a fourth winding coupled to the primary switch network, a fifth winding coupled to the secondary rectifier and a sixth winding coupled to the controller, wherein a voltage signal from the third winding and/or the sixth winding is processed to provide a feedback of a voltage at the output.
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Citations
20 Claims
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1. A converter comprising:
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a primary switch network coupled to a power source, wherein the primary switch network comprises a plurality of power switches; a controller configured to generate gate drive signals for the plurality of power switches; a secondary rectifier coupled to an output; a first transformer having a first winding coupled to the primary switch network, a second winding coupled to the secondary rectifier and a third winding coupled to the controller; and a second transformer having a fourth winding coupled to the primary switch network, a fifth winding coupled to the secondary rectifier and a sixth winding coupled to the controller, wherein a voltage signal from the third winding and/or the sixth winding is processed to provide a feedback of a voltage at the output. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A power apparatus comprising:
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a half-bridge primary side circuit having two primary switches coupled to a power source; a secondary circuit having a first leg coupled to the half-bridge primary side circuit through a first transformer and a second leg coupled to the half-bridge primary side circuit through a second transformer, wherein the first transformer and the second transformer are coupled to an output of the power apparatus; and a controller configured to generate gate drive signals for power switches of the half-bridge primary side circuit based upon a voltage signal detected from an auxiliary winding of one of the transformers. - View Dependent Claims (9, 10, 11)
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12. A method comprising:
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providing a power converter comprising a half-bridge primary side circuit having primary switches coupled to a power source and a secondary circuit having a first leg coupled to the half-bridge primary side circuit through a first transformer and a second leg coupled to the half-bridge primary side circuit through a second transformer, wherein the first transformer and the second transformer are coupled to an output; and configuring a controller to sense an output voltage of the power converter through an auxiliary winding of one of the transformers. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification