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The CS163X LED Controller From Cirrus Logic Allows LED Bulb Manufacturers To More Efficiently Create Warm, Natural Light Quality. (Photo: Business Wire)

Cirrus Logic entered the LED market in March 2012 with the first product in its roadmap of LED controllers, the CS161X family, which focused on solving dimmer compatibility issues. Fundamental to Cirrus Logic’s LED product family is the company’s digital TruDim technology, which was the result of a three-year investment in TRIAC interface algorithms, LED driver topologies and system architectures. TruDim digital intelligence allows the controller to identify the type of dimmer in use and adapt its dimmer compatibility algorithm to provide smooth dimming in much the same way the consumer has come to expect from decades of using incandescent light bulbs.

“Cirrus Logic’s roadmap of digital LED controllers is helping LED retrofit lamp manufacturers accelerate consumer adoption by solving critical challenges such as dimmer compatibility and color quality,” said Will Draper, strategic marketing manager for LED Lighting Products. “The CS163X family builds upon the near-perfect dimmer compatibility of our first family of digital LED drivers, the CS161X family, by adding two-channel color mixing technology to create improved light quality with up to 30 percent more energy savings compared to single-channel white LED bulbs. Having established performance benchmarks in both dimming and color quality, future generation products will focus on lowering system costs while maintaining this performance leadership.”

Market Background

LED retrofit bulbs are considered by many as the heir apparent to incandescent and compact fluorescent lamps, due to their superior energy efficiency and long life. Key barriers to mass adoption have been higher cost and, like compact fluorescent lights (CFL), poor dimmer compatibility and color quality. The challenge posed by color quality improvements represents a significant opportunity for solid-state lighting (SSL) technology, given that consumers are largely dissatisfied with the color quality performance of existing CFLs. Improved color quality is a fundamental advantage for LEDs due to their more uniform optical characteristics. As a result, SSL products can more closely replicate the user experience of incandescent lighting by simultaneously delivering warm correlated color temperature (CCT) with high Color Rendering Index (CRI).

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