TI Korea (CEO Kent Jeon, www.ti.com/ww/kr ) March 20, 2012 – TI has added a new offline primary-side sensing controller (PSR) to its portfolio of non-dielectric LED drivers. The new TPS92310 AC/DC constant current driver, which provides PFC functionality, reduces costs and fits suitably reduces size for high-power LED retrofit bulbs such as the A19, PAR30/38, and GU10. (For samples, evaluation boards, and more information, please visit http://www.ti.com/tps92310-prkr)

The TPS92310 is the first product in the primary side control controller (PSR) family that provides PFC functionality. In May, TI will introduce the TPS92311, which integrates a 600V power FET with similar functionality and superior avalanche energy characteristics, further reducing solution size and the number of components. The TPS92310 and TPS92311 are part of TI’s offline LED lighting controller portfolio, which includes the National LM3445, the industry’s first TRIAC dimmable LED driver offering both full range and flicker-free dimming (for more information on TI’s full range of lighting products, see http://www.ti.com/lighting-prkr ).

Key Features and Benefits of the TPS92310 LED Driver
• AC input voltage supports all common line voltages (100V, 120V, 230V, 240V, 277V), including US commercial voltage.
• Provides true primary-side sensing and accurate LED current regulation, reducing the BOM by over 14% compared to existing solutions by eliminating optocouplers, secondary-side error amplifiers, and related passive components.
• Selectable in the following dual operation modes:
Adaptive COT (Constant on-time) provides unique Power Factor Correction (PFC) functionality without additional components, and PFC reduces EMI indications to ensure regulatory approval.
○ Peak current control function provides low LED current ripple characteristics, minimizing stroboscopic effects
• Critical-Conduction-Mode (CCM) with Zero-Current Detection (ZCD) functionality provides enhanced power conversion efficiency and low EMI characteristics through valley switching.
• Cycle current limiting, overvoltage/undervoltage protection, thermal shutdown protection, etc., protect the LED driver and user from failure and abnormal operation.

Supply timing, package, and price
The TPS92310 is currently available for purchase through TI and authorized distributors. It is provided in a 10-pin MSOP package and costs $0.49 per unit based on a quantity of 1,000.

More detailed information on the TI LED lighting portfolio
• Order new LED driver samples and evaluation modules:
www.ti.com/TPS92310-prkr and www.ti.com/TPS92311-prkr
• TI Full LED Driver Information: www.ti.com/lighting-pr
• Share questions and knowledge on the TI E2E™ community's LED forum: www.ti.com/ledforum-pr
• Download LED reference designs from TI's PowerLab™ design library: www.ti.com/powerlab-pr
• Use the TI AD/DC LED Driver Online Navigation Tool for developing complete LED drive solutions: www.national.com/en/led/bulb/selectortool.html