Design Con 2015

LED drivers provide ease of retrofit

-February 19, 2013

The industry’s smallest off-line, phase-dimmable, constant-current lighting controller and an easy-to-use lighting driver that simplifies retrofit of LED bulbs, the TPS92075 controller and TPS92560 driver by Texas Instruments reduce component count and solution size.

The controller is designed for phase-dimmable, offline AC/DC LED lamp and downlight use. Housed in a small 6-pin TSOT package it has a power factor correction above 0.9 and delivers smooth, flicker-free dimming with conventional dimmers. The driver targets low-voltage AC or low-voltage DC LED lamp applications such as MR16 and AR111.

Key features of both devices include:

 

  • 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.

The TPS92560 and TPS92075 are available in volume. 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 will be available soon.

 

For more information visit Texas Instruments.

 

 

For controller and driver datasheets visit Datasheets.com.

 

 

 

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