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Digital LED controller features two-color mixing for efficient, high-quality light

Cirrus Logic Inc. announces its second family of digital LED controllers with digital TruDim dimmer compatibility technology designed to accelerate worldwide adoption of LED retrofit bulbs. In addition to providing near 100% compatibility with the world’s installed base of dimmers, the new CS163X family provides two-channel LED color mixing capabilities. This allows LED bulb manufacturers to more efficiently create warm, natural light quality while also lowering the cost barrier for two-channel LED retrofit bulbs.

The CS163X family enables improved color quality at up to 30% greater efficacy than with single-channel white LEDs. An advanced digital architecture provides the CS163X family with the ability to control two LED strings using components typically used to control a single LED string, resulting in lower system costs compared to today’s two-channel solutions. In addition, the CS163X incorporates powerline calibration technology, allowing manufacturers to calibrate bulb characteristics such as light output and color temperature by sending commands via the ac mains terminals during the final manufacturing stage. This patent-pending technology allows manufacturers to utilize LEDs with a wider variation in performance characteristics, resulting in lower LED costs while maintaining consistency in light output and color temperature from bulb to bulb.

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.

For more information, contact Cirrus Logic Inc., 2901 Via Fortuna, Austin, TX 78746. Phone: (800) 888-5016.

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