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Tyco Electronics' Nevalo solution aids lighting suppliers

Posted: 03 Feb 2011 ?? ?Print Version ?Bookmark and Share

Keywords:LED manufacturing? solid-state lighting? LED?

According to an LED market report just published this month by IMS Research, the next growth spurt in LEDs is expected to come from general lighting, rather than from its use in backlighting LCD TVs.

The packaged LED market grew from $6.1 billion in 2009 to $10.2 billion in 2010, a revenue growth of 67 percent, according to IMS Research. The $4.1 billion increase in 2010 versus 2009 is by far the largest in the history of LEDs.

Half the total LED market growth was driven by packaged LED sales for TVs, which grew from $0.4 billion to $2.5 billion. However, the market research firm projects all major backlighting applications to get saturated in 2013. Instead, from 2013, "LEDs in general lighting are forecast to account for most growth."

Temperature: the biggest challenge in solid-state lighting
One can't possibly stress enough the significant impact of excessive temperature in solid-state lighting. It adversely affects the performance, lifetime and reliability of LEDs. It also affects nearby circuitry and connectors.

While it is imperative to install large heat sinks to keep LED temperatures within safe operating limits, advanced solid-state lighting designs often demand a thermal management systemfully equipped with temperature sensorsto provide monitoring, detection and protection for the light source. But the story doesn't end there. How to properly measure and calculate LED temperature is a critical issue for solid-state lighting designers.

Indeed, it is well known that LED luminaire life is not identical to estimated LED life. For example, centrally located temperatures are not sufficient to monitor, detect and project multiple LED designs, according to Tyco Electronics.

Tyco Electronics believes that specially designed test tools that accurately record temperatures can simplify the task of verifying that the temperature design has been done correctly. The Nevalo system offers a tool box that includes a thermal test instrument to help designers instantly test a system's thermal performance, according to the company. Tyco Electronics believes such additional design tools will help lighting fixture designers shorten the testing and approval process for their new solid-state lighting systems.

The Nevalo system offers more than 60 LED light module options (ranging from 300- 3400 lumens); optics in total internal reflection and reflector styles; drivers with constant current output, dimming-control capabilities and temperature monitoring; a new ribbon-based, four-wire configuration wiring system that is physically keyed and color coded for polarity, accurate power connections and ease of manufacturing. It also includes heat sinks matched to the LED light modules.

Tyco Electronics' lighting business unit has more than 72 engineers around the world, including those in Eindhoven, the Netherlands and Shanghai.

- Junko Yoshida
??EE Times

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