Single stage power converter and method of operation thereof
First Claim
1. A single stage power converter including an energy storage device and couplable to a source of electrical power, comprising:
- an inductor, coupled to said energy storage device, for affecting a voltage across said energy storage device;
an asymmetrical half-bridge power circuit coupled to said energy storage device and having first and second power switches capable of being alternately activated to conduct current from said inductor to said energy storage device and from said energy storage device to an output of said power converter without requiring a switch between said energy storage device and said asymmetrical half-bridge power circuit; and
a controller for controlling activation of said first and second power switches as a function of a characteristic of said output thereby to enhance a regulation of said output.
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Accused Products
Abstract
A single stage power converter has an energy storage device and is configured to receive electrical power. The single stage power converter includes: (1) an inductor, coupled to the energy storage device, for affecting a voltage across the energy storage device, (2) an asymmetrical half-bridge power circuit coupled to the energy storage device and having first and second power switches capable of being alternately activated to conduct current from the energy storage device to an output thereof and (3) a controller for controlling activation of the first and second power switches as a function of a characteristic of the output thereby to enhance a regulation of the output.
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Citations
21 Claims
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1. A single stage power converter including an energy storage device and couplable to a source of electrical power, comprising:
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an inductor, coupled to said energy storage device, for affecting a voltage across said energy storage device; an asymmetrical half-bridge power circuit coupled to said energy storage device and having first and second power switches capable of being alternately activated to conduct current from said inductor to said energy storage device and from said energy storage device to an output of said power converter without requiring a switch between said energy storage device and said asymmetrical half-bridge power circuit; and a controller for controlling activation of said first and second power switches as a function of a characteristic of said output thereby to enhance a regulation of said output. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of operating a single stage power converter including an energy storage device and couplable to a source of electrical power, comprising the steps of:
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affecting a voltage across said energy storage device with an inductor; alternately activating first and second power switches of an asymmetrical half-bridge power circuit, said first and second power switches conducting current from said inductor to said energy storage device and from said energy storage device to an output of said power converter without requiring a switch between said energy storage device and said asymmetrical half-bridge power circuit; and controlling activation of said first and second power switches with a controller, said control being a function of a characteristic of said output thereby to enhance a regulation of said output. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A power supply, comprising:
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an input for receiving an input AC voltage; an input low-pass filter, coupled to said input, for filtering said input AC voltage; an input rectifier, coupled to said input low-pass filter, for rectifying said input AC voltage; and a single stage power converter including an energy storage device, comprising; an inductor, coupled to said energy storage device, for affecting a voltage across said energy storage device, an asymmetrical half-bridge power circuit coupled to said energy storage device and having first and second power switches capable of being alternately activated to conduct current from said inductor to said energy storage device and from said energy storage device to an output of said power converter without requiring a switch between said energy storage device and said asymmetrical half-bridge power circuit; and a controller for controlling activation of said first and second power switches as a function of a characteristic of said output thereby to enhance a regulation of said output. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification