Skip to content. | Skip to navigation

Personal tools

The Global
Information Hub for
Lighting Technologies
and Design

Sections
Home > Technologies > Electronics & Smart Controls > Power Integrations Sets New Standard for Power Density in LED-Driver Reference Design for T8-Tube Replacement
White Paper | Technology | Dec 05, 2012

Power Integrations Sets New Standard for Power Density in LED-Driver Reference Design for T8-Tube Replacement

Power Integrations, the leader in high-voltage integrated circuits for energy-efficient power conversion, today announced two new reference designs describing high-efficiency, non-isolated, high-power-factor (PF) LED drivers for T8 tubes. The designs feature low component count and leverage simple magnetics and single-sided boards yielding industry-leading power densities of 14.2 W/in³. Based on the LNK460KG LED driver from Power Integrations’ LinkSwitch-PL family of ICs, the circuits detailed in DER-337 (high-line) and DER-345 (low-line) use single-stage non-isolated topologies which result in a profile of only 8 mm - small enough to be mounted behind the LEDs in the T8 tube.

The buck-boost (DER-337) or buck (DER-345) configurations deliver a power factor greater than 0.9 and low THD, meeting EN61000-3-2 C limits. The designs are EMI compliant, easily meeting the EN55015 (EMI) class B specification. The integrated single-stage driver IC controls both PFC and constant-current output resulting in a solution that uses fewer than 30 components. Both drivers deliver 20 W (85 V at 240 mA) at an efficiency as high as 92 % (DER-337) and 89 % (DER-345).

Comments Andrew Smith, product marketing manager at Power Integrations: “The LED tube market is moving to non-isolated drivers, which boost system efficiency and reduce the temperature of the driver board and components. These boards use approximately half the number of components of isolated designs and are typically 3 - 4 % more efficient. With a high PF and low THD they perfectly suit commercial and industrial lighting applications anywhere in the world.”

Download DER-337 at http://www.powerint.com/sites/default/files/PDFFiles/der337.pdf; DER-345 at http://www.powerint.com/sites/default/files/PDFFiles/der345.pdf. Each document contains the LED driver specification, schematic, PCB details, bill of materials, transformer documentation and detailed performance characteristics.

About Power Integrations:
Power Integrations, Inc., is a Silicon Valley-based supplier of high-voltage integrated circuits and other high-voltage components used in energy-efficient power conversion. The company’s innovative technologies enable compact, reliable AC-DC power supplies for a vast range of electronic products including mobile devices, TVs, PCs, appliances, smart utility meters and LED lights. Since its introduction in 1998, Power Integrations’ EcoSmart® energy-efficiency technology has prevented billions of dollars’ worth of energy waste and millions of tons of carbon emissions. Reflecting the environmental benefits of the company’s products, Power Integrations’ stock is included in the NASDAQ® Clean Edge® Green Energy Index, The Cleantech Index®, and the Ardour Global IndexSM. For more information, including design-support tools and resources, please visit www.powerint.com; visit Power Integrations’ Green Room for a comprehensive guide to energy-efficiency standards around the world.


FEATURED

Zhaga Summit: "Sustainable Lighting for Smart Cities and Buildings"

Zhaga Summit: "Sustainable Lighting for Smart Cities and Buildings" Sustainability is a major trend in the lighting industry, driven by regulations and requested by customers and society. The Zhaga Consortium is hosting this online event on 29 September, 15:00 – 18:00 CEST with speakers from national authorities, cities, industry association, lighting design and ... Read more »

FEATURED

Near-field Analysis of VCSEL Arrays

Near-field Analysis of VCSEL Arrays The VTC 4000 is Instrument System‘s VCSEL testing camera for comprehensive near-field analysis of complete VCSEL arrays. It enables the absolutely calibrated, traceable and polarization-controlled 2D characterization of all relevant parameters for every single emitter on the array. The VTC 4000, ... Read more »

FEATURED

LUXEON 7070: For High Light Output & Efficiency Applications

LUXEON 7070: For High Light Output & Efficiency Applications More lumens, higher efficacy, and lower system costs are the driving forces behind new designs for a broad range of indoor and outdoor high light output applications. Lumileds new LUXEON 7070, introduced today, is designed to outperform similar lead-frame and ceramic high-power solutions with ... Read more »

FEATURED

LUXTECH Launches Fingerboards: 4 Versatile Area LED Modules

LUXTECH Launches Fingerboards: 4 Versatile Area LED Modules Fingerboards are designed to make it easier than ever to fill area fixtures with architectural-grade light; available in White, Tunable White, RGB, and RGBW to suit the demands of any lighting application. Read more »

page_peel