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The Acrich3 IC is a follow-on product to the driver IC Acrich2 Announced That was first as the heart of an LED light engine family of product back in 2011 and later Promoted as a standalone IC product. The IC is indeed a good match for the high-voltage LEDs packaged Seoul That Refers to as Multi Junction Technology (MJT) Because each LED LEDs includes a number of series-connected emitters That result in the high input voltage That Can Also lead to more efficient driver stages. The Acrich2 / 3 driver ICs Also will not work with LEDs from other vendors.
Dimming enhancements
Provides Acrch3 three primary improvements relative to the prior generation IC and two are in the area of dimming. The IC Responds to legacy more smoothly or phase-controlled triac dimmers. Indeed, an LFI demonstration Showed That Respond to light engine smoothly across the scale with no evident or sparkling flicker and a very uniform appearance With the LEDs behind a single diffuser.
Seoul Semiconductor LED driver Acrich3 AC-IC
But many professional applications Also need to have good support for dimming schemes: such as 0-10V dimming. Dave Neal, director of applications engineering at Seoul, the Acrich3 ASSERTS That works much better with 0-10V dimmers, Especially at the low end of the range where smooth dimming low-light adjustment is key for lighting designers / specifiers.
, Moreover, the better 0-10V support will lead to adoption of smart lighting Acrich3 in applications with network support, According to Neal. Such Implementations require 0-10V dimming good support, and Neal said the Acrich3 That Easily can be combined with microcontrollers to add support for ZigBee, Wi-Fi, Bluetooth, or other networks.
The ultimate advantage comes in the area of the quality of the AC mains. Since Acrich3 is Intended to Directly connect to the mains, it is inherently Also going to experience what can be a less than perfect input signal. Neal said Acrich3 That Could adapt to line-voltage variations as great as 20% and still deliver power-level regulation Within 5%. That feature will result in the more uniform lighting performance required in professional applications.
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That Seoul said it will shortly deliver LED light engines based on the Acrich3 LED. Based on past offerings, you can expect modular products in a variety of round and rectangular form factors. Jay Kim, executive vice president of sales Seoul's lighting division, said "Seoul Semiconductor plans to launch several new modules with Acrich3 technology for the use in residential, commercial, and Industrial lighting systems."
MJT 5050 LEDs
While not Announced together, the IC Acrich3 Also would work well with the new LEDs MJT 5050 Launched the week prior to LFI. The 5 x 5-mm LEDs deliver typical output of 180 lm at 20 mA of drive current and can be driven as high as 60 mA.
MJT 5050 Seoul Semiconductor LEDs
The new LEDs específicamente target the outdoor lighting market. According To Seoul's Kim, the LEDs offer the combination of high efficacy required in street lights and a low overall cost of ownership (TCO) When combined with AC-driver technology. The assertion TCO Refers to the fact That the driver electronics in an AC-LED system are far simpler and occupy a very small footprint Directly on a light engine as Opposed to DC-That Often LED products use a more-bulky and separate modular driver.
The MJT 5050 LEDs come in 3000K CCT 5000K warm-white and cool-white CCT versions. At 20 mA of drive current at 25 ° C operating conditions, the LEDs deliver 121 lm / W and 141 lm / W, respectively. The cooler LEDs feature a CRI of 70 and the warmer versions CRI of 80.
More info you can visit:http://www.lead-lighting.com/led--high-bay-light/led-high-bay-light-200w-cl4.htm
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