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Fairchild Semiconductor’s LED Driver Compatible with Traditional TRIAC Dimming, Analog Dimming - Single-Stage PFC Primary Side Regulation LED Driver Minimizes Bill-of-Materials, Allows for More Compact, Longer Life, Lower System Cost Design (NYSE: FCS) - FairchildSemi.com
Fairchild Semiconductor’s LED Driver Compatible with Traditional TRIAC Dimming, Analog Dimming

 

NewswireToday - /newswire/ - San Jose, CA, United States, 2012/02/06 - Single-Stage PFC Primary Side Regulation LED Driver Minimizes Bill-of-Materials, Allows for More Compact, Longer Life, Lower System Cost Design (NYSE: FCS) - FairchildSemi.com.

   
 
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LED lighting has evolved into a promising solution for replacing conventional lighting sources, such as fluorescent and incandescent lights. However, designers face several obstacles in residential and commercial LED lighting applications up to 20W including bulb, down lighting (GU10/E17, E26/27, PAR30/38) and Tube/Bar. Implementing dimming capabilities in a conventional TRIAC dimmer infrastructure is challenging because of dimmer compatibility. Additionally, small space requirements remain a consideration.

To help designers address these challenges, Fairchild Semiconductor (NYSE:FCS) developed the FL7730 single-stage primary side regulation (PSR) controller with power factor correction (PFC), TRIAC and analog dimming compatibility, as well as the FL7732 for non-dimming applications.
The FL7730 is an active PFC controller for single-stage flyback topology application. The device supports both TRIAC and analog dimming. Implemented with Fairchild’s unique analog sensing technology, the device can achieve TRIAC dimming control without flicker over the full range of 0 to 100% light output.

The FL7730 and FL7732 combine primary-side regulation and a single-stage PFC topology to minimize total bill-of-material (BOM) count, such as an input electrolytic capacitor and feedback circuitry, therefore allowing for a more compact, longer life, and lower system cost design.

To improve power factor and THD, both devices feature constant on-time control with an internal error amplifier and low bandwidth compensator. Precise Constant Current accuracy/control (± 5 percent) regulates accurate output current, independent of input and output voltage, allowing designers to achieve high and improved lighting quality. Operating frequency is proportionally adjusted by output voltage in both devices to guarantee DCM operation with optimized PF/THD and simpler design.

Excellent PF (≥0.9), low total harmonic distortion (THD) (Class C) and power efficiency of up to 85 percent for the FL7730 – greater than 85 percent for the FL7732 in non-dimming applications – allows these devices to meet worldwide energy saving regulations.

Fairchild offers a total solution portfolio for low- (<20W), mid- (20W to 50W) and high- (>50W) LED driver applications. Our highly integrated PWM and PFC controller solutions reduce component BOM counts to enable smaller lamp sizes and eliminate design complexities, while improving overall lighting efficiency. Fairchild’s extensive product portfolio ranges from discrete devices to integrated solutions that contain PFC controllers, high voltage gate drivers and MOSFETs. With a commitment to energy savings and meeting the most stringent regulations, Fairchild has developed innovative products that maximize performance while reducing board space, design complexity and system costs. In addition, Fairchild’s Global Power ResourceSM Center comprised of online tools, FAEs and regional centers staffed by power engineers, is the industry standard for customer design support.

Fairchild Semiconductor: Solutions for Your Success™

Price:US $ in 1,000 quantity pieces: FL7730:$1.27; FL7732:$1.15

Availability: Samples available upon request. Delivery: 8-12 weeks ARO

About Fairchild Semiconductor

Fairchild Semiconductor (fairchildsemi.com) – global presence, local support, smart ideas. Fairchild delivers energy-efficient, easy-to-use and value-added semiconductor solutions for power and mobile designs. We help our customers differentiate their products and solve difficult technical challenges with our expertise in power and signal path products.

Follow us on Twitter @ twitter.com/FairchildSemi | Visit us on facebook.com/FairchildSemiconductor

Fairchild Semiconductor:
Paul R. Hughes, Product PR Manager
P: 1-800-341-0392 x3110 - E: paul.hughes[.]fairchildsemi.com.

Sarah Thomas, Topaz Partners
P: +1 781-404-2427 - E: Email: fairchild[.]topazpartners.com.

 
 
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Fairchild Semiconductor’s LED Driver Compatible with Traditional TRIAC Dimming, Analog Dimming

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Publisher Contact: Malorie Pastor - FairchildSemi.com 
207-761-3362 malorie.pastor[.]fairchildsemi.com
 
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