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US 2011/0255310 A1Published application
Method and apparatus for implementing an unregulated dormant mode with an event counter in a power converter
AssigneePower Integrations, Inc.
InventorsAlex B. Djenguerian, Leif Lund
Life of this patent
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Abstract
A method for controlling an output of a power converter includes generating a drive signal with a control circuit, entering a dormant mode of operation that includes powering down the control circuit if a flow of energy to an output of the power converter is less than a threshold value for more than a first period of time, and powering up the control circuit after it is in the dormant mode of operation for a second period of time.
Claims9
A method for controlling an output of a power converter, the method comprising:
- generating a drive signal with a control circuit to control a power switch to regulate a flow of energy to the output of the power converter in response to a feedback signal;
- entering a dormant mode of operation if the flow of energy to the output of the power converter is less than a threshold value for more than a first period of time, wherein the dormant mode of operation includes powering down the control circuit to cease the generation of the drive signal and to stop regulating the flow of energy to the output, wherein the control circuit is unresponsive to the feedback signal when in the dormant mode of operation;
- and
- powering up the control circuit to resume generating the drive signal and to resume regulating the flow of energy in response to the feedback signal after in the dormant mode of operation for a second period of time.
1 more element
Dependencies are inferred from the claim text.