Power converter with a dynamically configurable controller based on a power conversion mode
First Claim
1. A controller, comprising:
- an error amplifier with first and second input terminals configured to receive one of an operating characteristic from an output of a power converter and a reference voltage of said power converter; and
a switch configured to selectively cause said first and second input terminals to receive one of said operating characteristic and said reference voltage as a function of a power conversion mode control signal produced by a comparator in accordance with an input voltage of said power converter and an output voltage of said power converter, said error amplifier being responsive to said operating characteristic being greater or less than a desired value and said power conversion mode control signal indicating one of a buck power conversion mode and a boost power conversion mode.
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Accused Products
Abstract
A controller and an output filter for a power converter, and a power converter employing at least one of the same. In one embodiment, the controller includes an error amplifier with first and second input terminals coupled to one of an operating characteristic and a reference voltage of the power converter, and a switch configured to couple the first and second input terminals to one of the operating characteristic and the reference voltage as a function of a power conversion mode of the power converter. In one embodiment, the output filter includes an output filter capacitor with a first terminal coupled to a first output terminal of a power converter, and an output filter inductor coupled between a second terminal of the output filter capacitor and a second output terminal of the power converter.
343 Citations
20 Claims
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1. A controller, comprising:
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an error amplifier with first and second input terminals configured to receive one of an operating characteristic from an output of a power converter and a reference voltage of said power converter; and a switch configured to selectively cause said first and second input terminals to receive one of said operating characteristic and said reference voltage as a function of a power conversion mode control signal produced by a comparator in accordance with an input voltage of said power converter and an output voltage of said power converter, said error amplifier being responsive to said operating characteristic being greater or less than a desired value and said power conversion mode control signal indicating one of a buck power conversion mode and a boost power conversion mode. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of operating a controller, comprising:
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providing an error amplifier including first and second input terminals; providing an operating characteristic from an output of a power converter and a reference voltage of said power converter; and selectively causing said first and second input terminals to receive one of said operating characteristic and said reference voltage as a function of a power conversion mode control signal produced by a comparator in accordance with an input voltage of said power converter and an output voltage of said power converter, said error amplifier being responsive to said operating characteristic being greater or less than a desired value and said power conversion mode control signal indicating one of a buck power conversion mode and a boost power conversion mode. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A power converter, comprising:
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a power train including at least one power switch and configured to operate in a power conversion mode; and a controller, including; an error amplifier with first and second input terminals configured to receive one of an operating characteristic from an output of said power converter and a reference voltage of said power converter, and a switch configured to selectively cause said first and second input terminals to receive one of said operating characteristic and said reference voltage as a function of a power conversion mode control signal produced by a comparator in accordance with an input voltage of said power converter and an output voltage of said power converter, said error amplifier being responsive to said operating characteristic being greater or less than a desired value and said power conversion mode control signal indicating one of a buck power conversion mode and a boost power conversion mode. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification