Invention Grant
- Patent Title: Method and apparatus for implementing an unregulated dormant mode with an event counter in a power converter
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Application No.: US15246138Application Date: 2016-08-24
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Publication No.: US09774268B2Publication Date: 2017-09-26
- Inventor: Alex B. Djenguerian , Leif Lund
- Applicant: Power Integrations, Inc.
- Applicant Address: US CA San Jose
- Assignee: Power Integrations, Inc.
- Current Assignee: Power Integrations, Inc.
- Current Assignee Address: US CA San Jose
- Agency: Christensen O'Connor Johnson Kindness PLLC
- Main IPC: H02J1/00
- IPC: H02J1/00 ; H02J3/14 ; G05F1/577 ; H02M3/335 ; H02M1/08 ; H02M1/00

Abstract:
A method for controlling an output of a power converter includes switching a switching element with drive signals that are generated for switching a switching element during normal operation when an energy requirement of one or more loads at the output are above a low-load threshold. A non-regulated dormant mode of operation is entered when the flow of energy to the output is detected to be less than the low-load threshold value for more than a first period of time. The control circuit is powered down when in the non-regulated dormant mode of operation the control circuit is unresponsive to stop regulating the flow of energy to the output of the power converter. The control circuit remains in the non-regulated dormant mode of operation for a second period of time before powering up again to resume generating the drive signal and regulating the flow of energy.
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