Products, Materials & Tools | Jun 02, 2008

ROHM’s High-Efficiency Isolated Driver Modules Optimized for High-Intensity LEDs

ROHM Electronics , introduces the industry’s first AC/DC-isolated LED driver modules that utilize constant-current circuits optimized for driving LEDs. The new BP58xx series integrates LED-driving control circuits, switching elements, Isolation transformers and constant-current circuits into a single SIP package.

The result is an all-in-one solution that increased power-conversion efficiency in a broad range of illumination/lighting applications, including theater, landscape, residential, commercial and emergency lighting.The six new AC/DC isolated driver modules’ constant-current output and adjustable brightness control offer designers a highly accurate, high-performance device for simplifying designs while saving valuable board space.

Key features of the BP58xx series include:
• Constant-current output optimized for driving LEDs (current set via external resistor)
• Minimal ambient temperature-based, constant current fluctuation (±1 percent accuracy)
• Industry’s highest power-conversion efficiency of 85 percent (2 to 8 percent improvement over conventional discrete solution)
• Isolated AC/DC Circuit
• Compact SIP11 package with built-in switching transformer (32.9 mm x 25.0 mm x 15.1 mm max.)

The BP58xx series was developed using energy-saving technologies culled from AC/DC converter designs. Unlike discrete solutions, these modules integrate all the necessary functionality for driving LEDs, making it possible to configure power supply circuits using fewer external components. The modules offer pin-compatibility with a wide range of products to enable easy modification based on each specification as well as adjustable constant-current isolation of 150-1000mA to enhance design flexibility. Additionally, BP58xx series modules are ROHS compliant.

“ROHM’s new BP58xx series LED driver modules mark an industry milestone for simplifying AC to DC output in high-power LED designs compared with previously available solutions,” said Avi Elmaleh, Field Application Engineer. “Now designers have an easy-to-use and cost-effective alternative to discrete solutions when implementing their lighting and illumination applications.”

About ROHM:
ROHM is the industry leader in system LSI, discrete components and module products, utilizing the latest in semiconductor technology. ROHM’s proprietary production system, which includes some of the most advanced automation technology, is a major factor in keeping it at the forefront of the electronic component manufacturing industry. In addition to its development of electronic components, ROHM has also developed its own production system so that it can focus on specific aspects of customized product development. ROHM employs highly skilled engineers with expertise in all aspects of design, development and production. This allows ROHM the flexibility to take on a wide range of applications and projects and the capability to serve valuable clients in the automotive, telecommunication and computer sectors as well as consumer OEMs.

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