Power converter with an adaptive controller and method of operating the same
First Claim
1. A power converter including a power switch configured to conduct for a duty cycle and provide a regulated output characteristic at an output thereof, comprising:
- a controller configured to provide a signal to control said duty cycle of said power switch as a function of said output characteristic, said controller regulating an internal operating characteristic of said power converter to improve an operating efficiency of said power converter depending on a value of one of a parameter of said power converter measured after a manufacturing step and an environmental parameter for said power converter.
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Accused Products
Abstract
A controller for a power converter, and method of operating the same. The controller improves power converter operating efficiency by regulating an internal power converter operating characteristic depending on a value of a power converter parameter measured after a manufacturing step, or an environmental parameter, preferably employing a table with entries dependent on the parameter value. The internal operating characteristic may be an internal bus voltage, a voltage level of a drive signal for a power switch, a number of paralleled power switches selectively enabled to conduct, or a basic switching frequency of the power converter. The controller may regulate an internal operating characteristic of the power converter using a functional relationship dependent on the parameter value. The environmental parameter may be received as a signal from an external source. The parameter measured after a manufacturing step may be a parameter measured from representative power converter(s).
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Citations
20 Claims
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1. A power converter including a power switch configured to conduct for a duty cycle and provide a regulated output characteristic at an output thereof, comprising:
a controller configured to provide a signal to control said duty cycle of said power switch as a function of said output characteristic, said controller regulating an internal operating characteristic of said power converter to improve an operating efficiency of said power converter depending on a value of one of a parameter of said power converter measured after a manufacturing step and an environmental parameter for said power converter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of controlling a power converter including a power switch configured to conduct for a duty cycle and provide a regulated output characteristic at an output thereof, comprising:
providing a signal to control said duty cycle of said power switch as a function of said output characteristic, thereby regulating an internal operating characteristic of said power converter to improve an operating efficiency of said power converter depending on a value of one of a parameter of said power converter measured after a manufacturing step and an environmental parameter for said power converter. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
Specification