Print  |  Send  |   

Dual mode off-line controller for non-dimmable LED lighting

March 20, 2012 // Paul Buckley

Dual mode off-line controller for non-dimmable LED lighting

Texas Instruments Incorporated has introduced a new off-line primary side sensing controller to the company's portfolio of non-dimming LED drivers. The new TPS92310 AC/DC constant current driver with power factor correction (PFC) reduces cost and shrinks-to-fit in high-power LED retrofit bulbs, including A19, PAR30/38 and GU10.


The TPS92310 is the first in a family of primary side, regulated controllers with PFC.  In May, TI will offer the TPS92311 with similar features and an integrated, 600V power FET with avalanche energy capability, further reducing solution size and component count. The TPS92310 and TPS92311 join TI’s portfolio of off-line LED lighting controllers that include the National LM3445, the industry’s first TRIAC dimmable LED driver with both full-range and flicker-free dimming.

The TPS92310 LED driver’s AC input voltage supports all common line voltages (100 V, 120 V, 230 V, 240 V, 277 V), including US commercial.

The device’s true primary side sensing and regulation provides accurate LED current regulation, eliminating optocoupler, secondary error amplifier and associated passive components. B ill of materials is reduced by 14 percent or more compared to today’s solutions.

The device can select from dual operating modes.  Adaptive constant on-time (COT) provides inherent power factor correction with no external components. PFC reduces the EMI signature to ensure regulatory approval.  Peak current control provides low LED current ripple to minimize stroboscopic effects.  Critical-Conduction-Mode (CCM) with Zero-Current Detection (ZCD) provides valley switching for improved power conversion efficiency and low-EMI.  Cycle-by-cycle current limit, over/under voltage protection and thermal shutdown also protects the LED driver and user against fault and abnormal operating conditions.

www.ti.com/tps92310-preu

All news

Analog & Mixed Signal ICs

Follow us

Fast, Accurate & Relevant for Design Engineers only!

Technical papers     

Linear video channel

READER OFFER

Read more

This month, Arrow Electronics is giving away ten BeMicro Max 10 FPGA evaluation boards together with an integrated USB-Blaster, each package being worth 90 Euros, for EETimes Europe's readers to win.

Designed to get you started with using an FPGA, the BeMicro Max 10 adopts Altera's non-volatile MAX 10 FPGA built on 55-nm flash process.

The MAX 10 FPGAs are claimed to revolutionize...

MORE INFO AND LAST MONTH' WINNERS...

Design centers     

Automotive
Infotainment Making HDTV in the car reliable and secure

December 15, 2011 | Texas instruments | 222901974

Unique Ser/Des technology supports encrypted video and audio content with full duplex bi-directional control channel over a single wire interface.

 

You must be logged in to view this page

Login here :