TI Home > TI E2E Community (Beta) > Videos > Analog > 100W LED Street light demo
TI E2E Community (Beta)
Welcome to the TI E2E (Engineer-to-Engineer) Community! We invite you to freely and openly interact with your peer Engineers, TI Engineers, and other experts in order to ask questions, share knowledge, explore ideas, and help solve problems.
More Search Options

100W LED Street light demo

Previous | Next | View all files
100W LED Street light demo
30 Jan 2009
File size: 38.6MB
Views: 1,707
Duration: 01:31
Embed


The PR788 shown in this short clip is a 100W offline AC to DC LED current driver with power factor correction. This design is a two stage converter design with a universal input*  boost PFC stage providing a 240V to 400V DC output and a low side buck stage providing the current source to power the LED’s. This design has been designed to support up to 30 high brightness LED’s in series up to 900mA average current, while in this demo we have used 3 strings with 30LEDs in Series, driven with a current of 300mA each. So in sum achieving the same result as with a 30LED string powered with 900mA. In addition the design incorporates interface for microprocessor control to allow for shutdown into a low power mode (<0.5W) and PWM dimming** of the LED’s.

The PR788 is as well now available as a web orderable EVM for US$49.

Further information on the PR788 can be found here

*90VAC-264VAC
** Supports PWM dimming frequency range of 200Hz up to 1kHz

ALL CONTENT AND MATERIALS ON THIS SITE ARE PROVIDED "AS IS". TI AND ITS RESPECTIVE SUPPLIERS MAKE NO REPRESENTATIONS ABOUT THE SUITABILITY OF THESE MATERIALS FOR ANY PURPOSE AND DISCLAIM ALL WARRANTIES AND CONDITIONS WITH REGARD TO THESE MATERIALS, INCLUDING BUT NOT LIMITED TO, ALL IMPLIED WARRANTIES AND CONDITIONS OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT OF ANY THIRD PARTY INTELLECTUAL PROPERTY RIGHT. NO LICENSE, EITHER EXPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE, IS GRANTED BY TI. USE OF THE INFORMATION ON THIS SITE MAY REQUIRE A LICENSE FROM A THIRD PARTY, OR A LICENSE FROM TI.

Content on this site may contain or be subject to specific guidelines or limitations on use. All postings and use of the content on this site are subject to the Terms of Use of the site; third parties using this content agree to abide by any limitations or guidelines and to comply with the Terms of Use of this site. TI and its suppliers reserve the right to make corrections, deletions, modifications, enhancements, improvements and other changes to the content and materials, its products, programs and services at any time or to move or discontinue any content, products, programs, or services without notice.