Products, Materials + Tools | Feb 14, 2013

TI’s New LED Drivers to Simplify Retrofit Light Bulb Design

Texas Instruments Incorporated introduced the industry’s smallest off-line, phase-dimmable, constant-current lighting controller and an easy-to-use lighting driver that simplify the retrofit of a variety of LED bulbs, including E14, GU10, A19, PAR20/30/38, MR16 and AR111. The TPS92075 controller and TPS92560 driver reduce component count and solution size while improving compatibility with legacy lighting controls.

chipsThe TPS92075 is designed for phase-dimmable, offline AC/DC LED lamp and downlight applications.  Offered in a very small 6-pin TSOT package, it achieves power factor correction above 0.9 while delivering smooth, flicker-free dimming when used with conventional wall dimmers. The TPS92560 is intended for use in low-voltage AC or low-voltage DC LED lamp applications such as MR16 and AR111. It uses a proprietary input current control method, which improves compatibility with electronic transformers.

Key features and benefits of TPS92075 and TPS92560:

TPS92075 for E14, GU10, A19 and PAR20/30/38 bulbs:
•    Small 6-pin TSOT package measures 2.9 mm by 2.9 mm.
•    Step-down (buck) or step-up/step-down (buck-boost) operation suitable for 120-VAC or 230-VAC LED lamps and downlights.
Power factor correction greater than 0.9 meets regulatory requirements for lighting.
Flicker-free dimming compatible with TRIAC and trailing-edge dimmers.

TPS92560 for MR16 and AR111 bulbs:
•    Simple hysteretic input current control scheme requires no complicated loop compensation and enhances compatibility with electronic transformers.
•    Integrated active low-side input rectifiers improve efficiency, simplify design and lower bill of materials.
•    Step-up (boost) or step-up/step-down (SEPIC) operation suitable for use with a variety of LED loads.

Availability, packaging and pricing:
The TPS92560 and TPS92075 are available in volume now from TI and its authorized distributors. Offered in a 10-pin PowerPad™ MSOP package, the TPS92560 is priced at US$0.72 each in 1,000-unit quantities. Priced at US$0.75, the TPS92075 is offered in an 8-pin SOIC package, and a small 6-pin TSOT package that will be available in March.

For more information and samples, visit www.ti.com/tps92560-pr-eu
and www.ti.com/tps92075-pr-eu.
For more information on LED replacement lamp and downlighting solutions, visit www.ti.com/ledretrofit-pr.

About Texas Instruments:
Texas Instruments semiconductor innovations help 90,000 customers unlock the possibilities of the world as it could be – smarter, safer, greener, healthier and more fun. Our commitment to building a better future is ingrained in everything we do – from the responsible manufacturing of our semiconductors, to caring for our employees, to giving back inside our communities. This is just the beginning of our story. Learn more at www.ti.com.