Opto-Electronics


Constant-current LED driver

2 May 2012 Opto-Electronics

Texas Instruments added a new off-line primary side sensing controller to its portfolio of non-dimming LED drivers. The TPS92310 AC/DC constant current driver with power factor correction (PFC) is suitable for high-power LED retrofit bulbs, including A19, PAR30/38 and GU10.

The device’s AC input voltage supports common line voltages of 100 V, 120 V, 230 V, 240 V and 277 V. True primary side sensing and regulation provides accurate LED current regulation, eliminating optocoupler, secondary error amplifier and associated passive components.

Two operating modes are available: adaptive constant on-time (COT) mode provides inherent power factor correction with no external components, while peak current control provides low LED current ripple to minimise 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 protect the LED driver and user against faults and abnormal operating conditions.



Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

Low inductance SiC power module gate driver kit
31 August 2020, Altron Arrow , Analogue, Mixed Signal, LSI
The transformation to electrify transportation – from trains, trams and trolleys to buses, automobiles and EV chargers – continues at a rapid pace, as countries shift toward improved modes of transit ...

Read more...
DACs with 1 or 2 channels
31 August 2020, Altron Arrow , Analogue, Mixed Signal, LSI
The MCP47CXBXX/MCP48CXBXX are single- and dual-channel 8-bit, 10-bit and 12-bit buffered voltage output digital-to-analog converters (DAC), with volatile or MTP memory and an I2C/SPI interface. The MTP ...

Read more...
Functional safety Ethernet PHY
29 July 2020, Altron Arrow , Telecoms, Datacoms, Wireless, IoT
A ubiquitous Ethernet architecture simplifies the design, configuration, and control of many different applications. This is especially true for connected mobility that requires more high-speed data delivery ...

Read more...
Time-of-flight proximity sensor and IR emitter two-in-one module
29 July 2020, Altron Arrow , Analogue, Mixed Signal, LSI
The VL6180 is the latest product based on STMicroelectronics’ patented FlightSense technology. This is a ground-breaking technology allowing absolute distance to be measured independent of target reflectance. ...

Read more...
Person presence detection demo video
31 August 2020, Altron Arrow , Multimedia, Videos
Person presence detection is one of the demonstrations available in STMicroelectronics’ new FP-AI-VISION1 function pack. Running on STM32H7 and STM32L4, this demo shows how wide the range of artificial ...

Read more...
Functional safety Ethernet PHY
31 August 2020, Altron Arrow , Telecoms, Datacoms, Wireless, IoT
A ubiquitous Ethernet architecture simplifies the design, configuration, and control of many different applications. This is especially true for connected mobility that requires more high-speed data delivery ...

Read more...
OLED module with yellow and blue display
31 August 2020, iCorp Technologies , Opto-Electronics
Raystar’s REA012864M is a COG (chip-on-glass) 0,96-inch dual colour OLED in the form of a PCB module. The module is built on an SSD1306 IC, supporting an I2C interface, 1/64 driving duty cycle, and supply ...

Read more...
Protection for single-cell Li-ion batteries
31 August 2020, Altron Arrow , Circuit & System Protection
The AP9221 is a single-package protection solution specially designed for single-cell Li+ rechargeable batteries in portable and wearable equipment. Made by Diodes Incorporated, it provides rich battery ...

Read more...
Variety of photoelectric sensors
31 August 2020, Vepac Electronics , Opto-Electronics
The Tri-Tronics Mini-Eye photoelectric sensors are designed to be low in cost and high in value. The sensors are waterproof and are enclosed in a high-impact plastic housing. Thru-Beam models utilise ...

Read more...
Energy harvesting for wireless sensor nodes
31 August 2020, Altron Arrow , Telecoms, Datacoms, Wireless, IoT
The concept of energy harvesting has been around for over a decade; however, the implementation in real-world environments has been cumbersome, complex, and costly.

Read more...