Products, Materials & Tools | Oct 21, 2011

Fairchild Semiconductor's Smart LED Lamp Driver IC Solves Small-Space Dimming Challenges for Designers

As LED lighting continues to grow in popularity, especially in residential lighting applications, designers are looking for efficient dimming solutions – when compared to TRIAC methods – that also fit within existing sockets. Additionally, these solutions need to work reliably in a small space while providing high efficiency.

To help designers meet this challenge, Fairchild Semiconductor (NYSE: FCS), a leading global supplier of high performance power and mobile products, developed the FL7701 Smart Non-isolated Buck LED Driver with power factor correction (PFC). The device uses a digital technique that allows it to automatically detect the AC input voltage condition, allowing it to create a special internal reference signal that results in high power factor correction. The FL7701 will also work from a DC input voltage condition, automatically sensing AC versus DC input voltage conditions. The traditional technique of using a transformer in an MR application incurs additional losses with the transformer conversion; this traditional inefficient method can now be replaced using the FL7701 connected directly to a DC or AC off-line input.

The FL7701 combines high functional density in a small form factor that provides designers up to 20 percent lower bill of material (BOM) costs and up to 60 percent board space savings. This combination creates a solution suitable for the space-constrained PCB sizes found in LED lighting applications and supports analog dimming.

The high degree of integration designed into the FL7701 provides the high reliability required to increase the luminary lifespan to more than five years, compared to the three years achievable by current solutions. Reliability is also improved since no electrolytic capacitors for the input, output, or the FL7701 VDD supply are required.

Digital power factor (PF) realization (>0.9) and lower total harmonic distortion (THD), along with the 90% electrical efficiency results in increased energy savings for the end system. Combined, these features allow the FL7701 to provide energy savings that meet the most stringent worldwide regulations, such as Energy Star®.

Fairchild's IC design technology results in high power efficiency (>90 percent) and provides high light quality required for residential applications. Available in an SOP-8 package, the FL7701 is ideal for interior decorating/ornamental lights; LED light bulbs or down lights in PAR, Reflector, MR or classic styles E26/E27 or Bi-Pin base, as well as LED lamps for low power lighting fixtures.

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 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.

To contact Fairchild Semiconductor about this product, please go to: http://www.fairchildsemi.com/cf/sales_contacts/
For information on other products, design tools and sales contacts, please visit:
http://www.fairchildsemi.com

About Fairchild Semiconductor:
Fairchild Semiconductor (NYSE: FCS) – 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. Please contact us on the web at www.fairchildsemi.com.

FEATURED

Nichia UV LED Technology Supports Evolving Markets

Nichia UV LED Technology Supports Evolving Markets Nichia, a leading global specialist in LED technology, is now aiming to extend its dominance to the UV market following its impressive showcase at the recent RadTech 2020 conference and exhibition in Orlando, Florida, USA. The company's latest solutions remain ideal for curing applications, but an ... Read more »

FEATURED

TLCI + CRI 90-95 LEDs for Broadcast Illumination

TLCI + CRI 90-95 LEDs for Broadcast Illumination Optimize sports lighting for broadcast videography with the best possible illumination for eyes and cameras. Cree XLamp XP-L2 and XHP50.2 LEDs provide a natural "daylight" experience to indoor & night events while reducing the lighting intensity and manual color correction needed for excellent ... Read more »

EDITORIAL

Ecosense Enters Replacement LED Lamp Business by Buying Soraa Shares

Ecosense Enters Replacement LED Lamp Business by Buying Soraa Shares Ecosense®, a leading LED technology company, announced today that it has acquired assets from Soraa, a designer and manufacturer of full-spectrum LED lamps based in Fremont, California. Under the terms of the deal, Ecosense acquires the Soraa name, intellectual property and lamps, including the ... Read more »

EDITORIAL

WEBINAR (May 14th): How to Achieve Better Products to the Eye Through Virtual Prototyping?

WEBINAR (May 14th): How to Achieve Better Products to the Eye Through Virtual Prototyping? In the CADFEM webinar on May, 14, 2020 you will learn, how physics-based simulations - virtual prototyping - contribute to develop better lighting products. The live presentation pictures the whole process - from editing the geometric model to the definition of light sources and sensors to the use ... Read more »