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Optoelectronics/Displays??

Tool provides complete design for bright LEDs

Posted: 20 Jun 2007 ?? ?Print Version ?Bookmark and Share

Keywords:high-brightness LEDs? HB LEDs? PSoC Express? embedded visual design tool?

EZ-Color device

Cypress SEMIconductor Corp. introduces a complete design solution for high-brightness (HB) LED intelligent lighting systems that offers high ease-of-use and performance.

Cypress' new EZ-Color family of HB LED controllers is supported by the PSoC Express embedded visual design tool.

For the first time, engineers can simply input the selected LEDs, choose a color and the combination of the unique EZ-Color architecture and PSoC Express software delivers a complete design solution for growing applications such as architectural lighting, general signage, rechargeable flashlights, entertainment lighting, emergency vehicle lighting and more.

Today, LED design requires a complex set of calculations to deliver consistent color. The two biggest problems that HB LED engineers face today are having to account for differing LED performance specifications based on manufacturing bins and the LEDs' degradation (such as output flux, wavelength) over different temperatures.

With PSoC Express, designers simply select a color from a gamut presented on-screen. Pre-loaded manufacturers' bin specifications and temperature feedback algorithms are automatically applied to the selected design and programmed into the EZ-Color Controller. This can save anywhere from weeks to months of design time for a complex design.

In addition to ease-of-design advantages, EZ-Color controllers can support up to 16 LED channels, compared to four or five channels for competitive devices. The additional channels can mean a savings of dozens or even hundreds of controllers in very large designs, saving on design complexity, power consumption and board space.

The EZ-Color controllers are also powered by Cypress patent pending PrISM or Precise Illumination Signal Modulation technology. The PrISM modulation technology significantly reduces low-frequency flicker and radiated EMIcommon problems with HB LED designs. Designers also have the flexibility to add additional functionality to the EZ-Color controllers, including battery charging, motor control and other features.

The EZ-Color family is supported by the CY3261A-RGB evaluation kit. The evaluation kit showcases EZ-Color's flexibility and ease of use for high-brightness LED color mixing applications and employs temperature compensation for consistent color. Included with the evaluation kit is an interactive GUI enabling quick color mixing via a CIE diagram or by directly controlling each HB LED. The kit is available for $149.

The EZ-Color family includes devices that drive up to four (CY8CLED04), eight (CY8CLED08) and 16 (CY8CLED16) LEDs." All devices are available today with the CY8CLED04 priced under $4 in high volumes.




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