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US Patent 9572224 Bleeder protection using thermal foldback

Patent 9572224 was granted and assigned to Power Integrations on February, 2017 by the United States Patent and Trademark Office.

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Patent abstractTimelineTable: Further ResourcesReferences
Is a
Patent
Patent

Patent attributes

Patent Applicant
Power Integrations
Power Integrations
Current Assignee
Power Integrations
Power Integrations
Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
Patent Number
9572224
Patent Inventor Names
Mingming Mao6
Michael Yue Zhang6
Ricardo Luis Janezic Pregitzer6
Tiziano Pastore6
Yury Gaknoki6
Date of Patent
February 14, 2017
Patent Application Number
14731014
Date Filed
June 4, 2015
Patent Citations Received
‌
US Patent 11856670 Systems and methods for providing power supply to current controllers associated with LED lighting
1
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US Patent 12089302 Systems and methods for dimming control related to TRIAC dimmers associated with LED lighting
2
‌
US Patent 12009825 Switch control systems for light emitting diodes and methods thereof
3
‌
US Patent 11937350 LED lighting systems with TRIAC dimmers and methods thereof
4
‌
US Patent 11997772 Systems and methods for controlling power factors of led lighting systems
5
‌
US Patent 11784638 Switch control systems for light emitting diodes and methods thereof
‌
US Patent 11792901 Systems and methods for bleeder control related to TRIAC dimmers associated with LED lighting
Patent Primary Examiner
‌
Tung X Le
Patent abstract

Thermally protected bleeder circuits for maintaining an input current of a power converter above a dimmer circuit holding current are disclosed. In one example, a bleeder control circuit may generate a bleeder control signal to control a bleeder current of the bleeder circuit based on an input current signal and a temperature signal. The bleeder control circuit may cause the bleeder current to be substantially equal to zero in response to the input current signal being greater than or equal to a reference signal, and may cause the bleeder current to be proportional to a difference between the input current signal and the reference signal in response to the input current signal being less than the reference signal. The reference signal may be constant for temperatures less than a threshold temperature, but may decrease with respect to increases in temperature for temperatures greater than the threshold temperature.

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