Dual mode off-line controller for non-dimmable LED lighting
March 20, 2012 // Paul Buckley
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.
Quantum entanglement now on-a-chip
January 30, 2015
Quantum computing promises to revolutionize future computers, enabling pint-sized hardware to outperform room-filing supercomputers, ...
Single crystal perovskites promise cheaper solar cells and LEDs
Wafer-scale perovskite solar cells on the horizon
Spread Spectrum Frequency Modulation Reduces Automotive LED Driver EMI
Privately-owned car not on the red list, study says
Private equity buys Canadian MEMS foundry
January 29, 2015
Private equity investor FTC Technologies Inc., based in western Canada, has purchased 98 percent of the shares in MEMS foundry ...
Tronics launches IPO
Samsung shows Europe its technology shopping list
Fuel cells in trucks: silent power instead of idling motors
- Sensing Elements for Current Measurements
- Investigating Die attach Failure in IGBTs using Power Cycling Tests
- Power Semiconductor Failure Diagnosis using Thermal Characterization and Power Cycling
- Top 5 Trends in Product Development and Test Engineering
InterviewCEO interview: Bosch's IoT startup is all about the system
Thorsten Mueller, CEO of Bosch Connected Devices and Solutions GmbH (Reutlingen, Germany), has been guiding the latest startup subsidiary of Robert Bosch GmbH since 2013 when he started the initiative ...
Filter WizardCheck out the Filter Wizard Series of articles by Filter Guru Kendall Castor-Perry which provide invaluable practical Analog Design guidelines.
Linear video channel
READER OFFERRead more
To ensure you have a good start in 2015, Freescale is giving away five of its QorIQ TWR-LS1021A Tower system modules, worth USD269 each, for EETimes Europe's readers to win.
The module is the most feature-rich and high-performance Tower system offered by Freescale, enabling compatibility and interoperability with the growing list of Tower expansion modules, offering an easily accessible...MORE INFO AND LAST MONTH' WINNERS...
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.