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NXP Semiconductors says that its LED driver ICs can match the lifetime figures of the LEDs themselves. The chipmaker has carried out accelerated lifetime tests on its SSL2101 range of LED drivers. With LED lighting offering the potential to be ten times more efficient than incandescents, manufacturers are commonly reporting lifetime figures exceeding 50,000 hours.
As a result the issue of reliability shifts to the associated devices particularly the LED driver.“Through our ongoing lifetime test, which has now surpassed 7,000 hours, we’ve set a new benchmark and proven that NXP’s mains LED controller and driver ICs are up to the challenge of supporting extreme long-life lamps,” said Jacques le Berre, director of marketing and business development for lighting solutions, NXP Semiconductors. NXP has been conducting the long-running test of LED driver ICs, running continuously since December 2008. "As of today, the test has reached 7,000 hours and continues to run, demonstrating that NXP mains LED controller and driver ICs are capable of matching LED lifetimes.
The test goes well beyond traditional lifetime testing procedures in the semiconductor industry, which are typically based on 1,000 hours’ testing time," said the company.The extrapolated lifetime of the SSL2101 in real lighting applications, based on a lifetime acceleration model, is estimated as follows:* Over 60,000 hours lifetime at 105°C * Over 35,000 hours lifetime at 115°C * Over 20,000 hours at 125°C * Over 7,000 hours at 150°CThe test is part of an NXP project dedicated to assessing the actual lifetime of its latest LED drivers, running reliability tests until product end of life.
The SSL2102 is suitable for high-efficiency and high-power factor SSL applications, including SSL retrofit lamps from 8W to 15W; LED modules such as LED spots and down-lights from 15W and 25W; and LED strings for retail display up to a maximum of 25W. See: LED Lighting - Your Electronics Weekly Guide
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