Power converter with noise immunity
First Claim
1. A power adapter system comprising:
- a. a power supply for supplying an input power;
b. a power converter coupled with the power supply, wherein the power converter produces an output voltage on a load using the input power;
c. a controller coupled with the power converter; and
d. a noise detection element coupled with the controller, wherein the noise detection element is configured to detect noise and produce a noise feedback voltage based on the detected noise;
wherein the controller adjusts the operation of the power converter based on the noise feedback voltage.
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Abstract
A power adapter system, method and device having two feedback loops that produces an output voltage on a load with a power converter using an input power. A feedback element coupled with the power converter comprises a first feedback loop that compensates for error on the output voltage. A noise detection element coupled with the power converter comprises a second feedback loop that detects noise and produces a noise feedback voltage based on the detected noise. Based on the noise feedback voltage a controller coupled with the power converter adjusts the operation of the power converter in order to compensate for or not respond to the effects of high frequency noise such as radio frequency noise on the first feedback loop of the system.
142 Citations
29 Claims
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1. A power adapter system comprising:
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a. a power supply for supplying an input power; b. a power converter coupled with the power supply, wherein the power converter produces an output voltage on a load using the input power; c. a controller coupled with the power converter; and d. a noise detection element coupled with the controller, wherein the noise detection element is configured to detect noise and produce a noise feedback voltage based on the detected noise; wherein the controller adjusts the operation of the power converter based on the noise feedback voltage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A power adapter comprising:
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a. a power converter coupled with a power supply, wherein the power converter produces an output voltage on a load using an input power provided by the power supply; b. a controller coupled with the power converter; and c. a noise detection element coupled with the controller, wherein the noise detection element is configured to detect noise and produce a noise feedback voltage based on the detected noise; wherein the controller adjusts the operation of the power converter based on the noise feedback voltage. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A method of providing a high frequency noise immunity feature to a power adapter, the method comprising:
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a. producing an output voltage on a load with a power converter using an input power provided by a power supply; b. detecting noise with a noise detection element and producing a noise feedback voltage based on the detected noise with the noise detection element; and c. adjusting the operation of the power converter with a controller based on the noise feedback voltage. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification