Detecting circuit for short of LED array and LED driving apparatus using the same
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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 4, 2012
filing date -
Dec 7, 2011
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Abstract
A detection circuit configured to detect a short in a plurality of LED arrays is provided. The detection circuit includes a voltage measuring unit, a short detecting unit, and a detection control unit. The voltage measuring unit is configured to measure respective feedback voltages of the plurality of LED arrays and output a lowest measured feedback voltage as a first feedback voltage. The short detecting unit is configured to detect the short in the LED arrays using the measured feedback voltages. The detection control unit is configured to control the short detecting unit to stop short detection operation, when the first feedback voltage exceeds a first preset reference voltage.
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