26 October 2011

Cree launches high-voltage XLamp XT-E and XM-L LEDs

Cree Inc of Durham, NC, USA has announced the commercial availability of high-voltage XLamp XT-E and XM-L LEDs. The new LEDs can enable the use of more efficient, smaller drivers to lower costs for compact lighting applications such as candelabras and retrofit lamps, the firm claims.

“The XLamp XM-L High-Voltage LED eliminates the trade-off between size and efficacy, allowing us to take advantage of the efficacy of high-voltage drivers,” comments Ken Chakravarti, chief technology officer of LED lamp maker Ledzworld. “This translates to more efficient, better and more cost-effective small LED lamps and luminaires such as the B10 replacement lamp,” he adds.

Small-form-factor lighting, like candelabras, historically presented a host of challenges for LED technology, says Cree. Prior LEDs were unable to deliver the required system-level performance in the form factor that consumers demand. “Maximizing the LED voltage, as Cree has done in the new high-voltage XM-L and XT-E LEDs, is a very effective way to minimize current through the LED driver output rectifier,” comments Peter Vaughan, director of applications engineering at IC maker Power Integrations Inc of San Jose, CA, USA. “This can reduce losses and heat dissipation in the driver and increase the overall system luminous efficacy by several percentage points,” he adds.

“Never before have lighting OEMs been able to leverage the benefits of high-voltage LEDs with this level of performance,” claims Paul Thieken, Cree’s director of marketing, LED components. The XLamp XM-L LED delivers up to 600lm in cool white (6000K) and up to 462lm in warm white (3000K) at 6W, 85ºC. The XLamp XT-E LED delivers up to 300lm in cool white (6000K) and up to 228lm in warm white (3000K) at 6W, 85ºC. Both LEDs have a typical voltage of 46V at binning conditions.

XLamp XT-E and XM-L LEDs are available now in production quantities with standard lead times.

Tags: Cree XLamp LEDs

Visit: www.creehighvoltage.com