6

XLamp a19 RefeRence Design

trademarks of Cree, Inc. For product specifications, please see the data sheets available at www.cree.com. For warranty information, please contact Cree Sales at sales@cree.com.

design gOALs

To be familiar with the rapidly evolving product space for leD replacement lamps, application engineers at cree have

built at least a dozen different A19 lamp prototypes. Our team has experimented with a broad selection of XLamp LEDs,

drivers and enclosures. We have developed a few examples as models as being the most cost-effective, for a variety of

reasons. For example:

Constraint

solution

Rationale

Maximize driver efficiency

Xlamp mX-6S

High voltage leDs in series all for more-

efficient driver implementations

minimize leD in bulb Bom

Xlamp Xp-e Hew

Extremely high lumen/$ ratio, optimized

for diffused lighting applications

minimize production and inventory costs

Xlamp cXa-2011

Reduced manufacturing complexity;

simplified inventory

table 4: A19 design goals and Led solutions

We will explore aspects of each of these designs.

figure 2: A19 bulbs using a variety of Cree XLamp Leds

The 3 snow cones