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VOLUME -26 NUMBER 9
Publication Date: 09/1/2011
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September 2011 Issue
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Fairchild Offers Designers Total LED Solutions
San Jose, CA — Fairchild Semiconductor is offering a broad portfolio of LED lighting solutions for low-, mid- and high-power lighting applications. With the increasing popularity of LED lighting applications, designers face challenges ranging from design complexity and the need for high system efficiency to limited PCB space and the management of multiple vendors to meet all of their design requirements.
The company's solutions include integrated components in a single IC, using highly efficient and effective technologies for power ranges that are 1W and above. Offerings include multiple topologies, which provide energy-efficient solutions for low-, mid- and high-power lighting applications. These topologies provide high power factor and low total harmonic distortion, enabling extended system life and reduced lifetime cost while meeting global energy regulations.
PSR flyback solutions target LED lighting applications that are <20W: In these designs, small lamp size is critical and cost pressure is high. To address this, Fairchild?s PSR technology provides TRUECURRENT? technology and distinct IP for leading-edge CV/CC performance in a multi-chip package option (7SOP/DIP) with the MOSFET included (1A/700V VDMOS ). A PSR controller using an external MOSFET is also available. By using PSR flyback solutions for LED lamps from ~5W to ~20W, designers can achieve high power efficiency (over 80 percent improvement from current methodologies) and eliminate the need for secondary feedback circuits, lowering bill of material costs, simplifying the design and saving PCB space.
Fairchild's single-stage PFC flyback is designed for 20 to 50W applications — lighting applications that require high power factor in a limited space, plus higher efficiency and reliability than traditional solutions provide.
The company also provides a CRM PFC PWM controller for single-stage flyback, suitable for 10 to 50W LED down lights and 20 to 50W LED L-lights, that provide high efficiency by offering high power factor and low THD performance without adding components, thus lowering the BOM count. In addition, no bulk capacitor is needed, which further extends the system lifetime.
PFC + QR Flyback Technology for <100W applications provides a QR flyback solution with high system efficiency and high reliability, and with the CRM PFC front-end resulting in high power factor and low THD. Through integration, this technology reduces BOM count, provides cost and space savings, thus allowing designers to achieve a small size application design. The PFC + QR flyback technology is well suited for applications such as flat lights, LED street lights, industrial lighting, stage lights, wall washing and signage.
Contact: Fairchild Semiconductor Corp., 3030 Orchard Parkway, San Jose, CA 95134
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