Science & Technology
Science and Technology
Science and Technology 
Thu, August 25, 2011
Wed, August 24, 2011
Power Integrations Releases Compact 25-Watt LED Lighting Ballast Reference Design Sized for T8 Tubes
SAN JOSE, Calif.--([ BUSINESS WIRE ])--Power Integrations (NASDAQ:[ POWI ]), the world leader in LED driver ICs for general lighting applications, today published a new reference design for a 25-watt LED T8 tube ballast power supply. Notable for industry-leading efficiency of greater than 91%, the design ([ DER-287 ]) also meets commercial requirements for power factor (PF greater than 0.9) and harmonic distortion (EN61000-3-2 Class C). [ DER-287 ] is a single-stage converter built around LNK409EG, a member of the [ LinkSwitch-PH ] family of LED driver ICs. Single-stage technology greatly increases product lifetime by eliminating the opto-isolators and large aluminum electrolytic input bulk capacitors required by conventional two-stage solutions.
"Most regions require either low THD or high PF in commercial and industrial lighting installations a" specifications that the LinkSwitch-PH LED driver IC easily meets, enabling designs that can be used worldwide. Details are available in this new report."
Explains Andrew Smith, product marketing manager at Power Integrations: aAchieving very high power-conversion efficiency is as critical as LED choice in maximizing overall luminous efficacy of a lighting fixture. Efficiencies above 88% are extremely difficult to achieve cost-effectively in a T8 tube form factor unless a single-stage topology is used; this design easily exceeds 91%.a Smith added: aMost regions require either low THD or high PF in commercial and industrial lighting installations a" specifications that the [ LinkSwitch-PH ] LED driver IC easily meets, enabling designs that can be used worldwide. Details are available in this [ new report ].a
In addition to the highly integrated monolithic design that combines controller, driver, and switching MOSFETs into a single package, Power Integrationsa™ [ LinkSwitch-PH ] family features a number of protection features, including over-temperature and over-current protection. This means that very few external components are required to implement the solution a" a very important consideration in compact T8 tube enclosures.
This new design example report ([ DER-287 ]) can be downloaded from the Power Integrations website at [ www.powerint.com/sites/default/files/PDFFiles/der287.pdf ]. The [ LinkSwitch-PH ]video, data sheet, application notes, and other design examples are available on the companya™s website at [ http://www.powerint.com/linkswitch-ph ].
About Power Integrations
Power Integrations is the leading supplier of high-voltage integrated circuits used in energy-efficient power conversion. The company's innovative technology enables compact, energy-efficient power supplies in a wide range of electronic products, in AC-DC, DC-DC, and LED lighting applications. Since its introduction in 1998, Power Integrations' EcoSmarta" energy-efficiency technology has saved an estimated $4.9 billion of standby energy waste and prevented millions of tons of CO2 emissions. The company's [ Green Room ] web site provides a wealth of information about "energy vampires" and the issue of standby energy waste, along with a comprehensive guide to energy-efficiency standards around the world. Reflecting the environmental benefits of EcoSmart technology, Power Integrationsa™ stock is included in The Cleantech Index® and the NASDAQ®[ Clean Edge ]® Green Energy Index. For more information, please visit [ www.powerint.com ].
Power Integrations, LinkSwitch, eSIP, EcoSmart, and the Power Integrations logo are trademarks or registered trademarks of Power Integrations, Inc. All other trademarks are the property of their respective owners.