AC/DC LED driver
16 May 2012
Opto-Electronics
New from Marvell is the 88EM8183 deep dimming single-stage AC/DC LED driver IC. It delivers high dimmer compatibility and low component count, while providing light quality and dimming performance comparable to incandescent bulbs.
Leveraging Marvell’s mixed-signal architecture and advanced dimming control technology, the device is designed to achieve smooth deep dimming as low as 1% LED current. It is also designed to be compatible with more than 100 different types of TRIAC wall box dimmers from various manufacturers. By reducing the number of components needed for LED drivers and shrinking necessary board space, the IC enables OEMs and ODMs to bring LED lighting to all kinds of lamp form-factors, including A19, PAR, BR, GU10 and candle, without compromising dimming performance.
The 88EM8183 supports universal AC input and a wide range of LED output power from a few Watts up to 100 Watts. It employs a primary side current control method, which eliminates the need for an optocoupler and associated feedback circuit while delivering high regulation accuracy over wide range AC input. It also integrates a high-voltage startup circuit to supply power to the chip during power-up, eliminating an external field-effect transistor (FET) and associated power circuits.
The device monitors dimmer status and manages dimmer load to maintain proper operations through the internal digital core and analog circuit, eliminating external dimmer bleeder circuits required by other solutions. It delivers up to 90% efficiency, power factor above 0,95 and lower than 20% total harmonic distortion. The IC supports both flyback and buck-boost topologies for isolated and non-isolated bulbs.
Further reading:
Industrial time-of-flight proximity sensor
EBV Electrolink
Opto-Electronics
STMicroelectronics’ VL53L4ED is a compact, high accuracy time-of-flight proximity sensor designed for industrial and embedded applications that require precise short range distance measurement.
Read more...
Flexible enclosure lighting solutions
IOT Electronics
Opto-Electronics
Phoenix Contact’s range of enclosure lights is designed to provide uniform illumination throughout control cabinets, while offering flexible installation and energy-efficient operation.
Read more...
Industry’s smallest laser firing system IC
Opto-Electronics
Silanna Semiconductor recently announced that its FirePower laser firing system ICs for smaller, more efficient LiDAR and rangefinder applications are available in production quantities.
Read more...
More light, greater efficiency, better growth
Würth Elektronik eiSos
Opto-Electronics
Würth Elektronik has expanded its WL-SMDC Horticulture product line with new LEDs with wavelengths of 450, 660, and 730 nm in the 3535 package.
Read more...
Intelligent control boosts tunnel safety
IOT Electronics
Opto-Electronics
Intelligent tunnel lighting systems are helping operators by delivering adaptive illumination that enhances both safety and energy efficiency.
Read more...
Case Study: Turning data into insight
Hamamatsu Photonics UK
Editor's Choice Opto-Electronics
Hamamatsu Photonics’ InGaAs PIN photodiode detector has proven consistent, reliable, and robust for more than a decade, helping Axetris to deliver stable, repeatable measurements.
Read more...
Reliable imaging for industrial applications
Vepac Electronics
Opto-Electronics
Combining a high-performance camera with an integrated high-speed processor, these compact systems enable advanced image sensing directly at the device level.
Read more...
Panasonic Industry launches its first flat lens, high-performing PIR sensor
Opto-Electronics
Panasonic Industry has announced the launch of its latest innovation in PIR motion sensors: the Flat Wide Detection Type (12 lens), being the first product incorporating its new PaPIRs+ technology.
Read more...
Africa’s future internet could be on overland submarine cables
Opto-Electronics
SEACOM aims to explore an innovative new concept: utilising submarine cable technology to address the longstanding challenges in Africa’s terrestrial infrastructure.
Read more...
Versatile range of camera modules
EBV Electrolink
Opto-Electronics
The CAM-66GY pro-modules from ST are a full range of sample camera modules made for a seamless evaluation and integration of the VD66GY 1,5-megapixel colour image sensor.
Read more...
printer friendly version