Driving circuits and methods for controlling light source
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United States of America Patent
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Feb 6, 2018
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N/A
app pub date -
Dec 14, 2015
filing date -
Dec 26, 2014
priority date (Note) -
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Abstract
A method for powering a load by a light source driving circuit is disclosed. The method includes: acquiring a first sensing signal indicative of an average current flowing through the load; generating a first temperature detecting signal indicative of an ambient temperature of the light source driving circuit; and adjusting the average current flowing through the load based on the first temperature detecting signal and the first sensing signal to make the average current flowing through the load to be inversely proportional to the ambient temperature of the light source driving circuit if the ambient temperature of the light source driving circuit is between a first temperature threshold and a second temperature threshold.
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