Front End I News
TRIAC-dimmable LYTSwitch-7 LED driver ICs from Power Integrations cut BOM count by 40 per cent P
ower Integrations has announced its LYTSwitch-7 single-stage, non- isolated, TRIAC-dimmable, buck topology LED driver IC family. Capable of delivering up to 22 watts without a heatsink in a very small SO-8 footprint, these high-efficiency devices are suitable for bulbs, tubes and fixtures. LYTSwitch-7 designs do not require bleeders; employing simple, passive damping for TRIAC management and an off-the-shelf, single- winding inductor, reducing component count to just 20, as compared to approximately 35 parts for typical dimmable LED driver boards. LYTSwitch-7 ICs deliver a phase-cut (TRIAC) dimming solution with a wide dimming range and monotonic dimming response. The LED drivers enable efficiency of greater than 86 per cent - around two per cent higher than conventional dimmable products – with high PF, accurate regulation and comprehensive protection. They suit low- or high-line input as well as wide-range universal-input designs for U.S. commercial lighting applications, which operate from 90 VAC to 305 VAC with TRIAC dimming enabled in low-line installations.
Comments Hubertus Notohamiprodjo,
director of product marketing at Power Integrations: “Our new LYTSwitch-7 LED driver ICs provide a highly robust solution while requiring a BOM count that is approximately 40 per cent less than conventional circuits. The internal 725 V MOSFET delivers better withstand performance during line surges, while the bleeder-less design has high TRIAC compatibility but does not produce wasted
Why the Industrial Internet Revolution will be the next economic revolution that changes the world
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heat, resulting in a more efficient and reliable driver.”
Like all Power Integrations LED drivers,
LYTSwitch-7 ICs have a host of protection features including thermal foldback with end-stop shutdown, which protects the IC, driver and fixture at abnormally-high ambient temperatures by automatically reducing the current flow and dimming the lamp. Developers find that thermal foldback is the key to reducing costs associated with over-design of both electrical and mechanical components to meet reliability goals since the IC automatically limits unusual temperature excursions without extinguishing the lamp.
Devices are also protected from open- and short-circuit conditions, input and output OV, overcurrent and SOA. LYTSwitch-7 ICs meet international standards including: DOE Level 6 (external power supply), CEC Titles 20 and 24, ENERGY STAR Lamps Program Requirements Version 2.0, NEMA SSL-7A and EN61000-3-2 (C&D). Key applications include low-cost A19 lamps, small-form-factor lamps such as candle-style and GU10 bulbs, commercial & industrial applications, ceiling lamps and downlight fixtures. LYTSwitch-7 IC samples are available now.
www.power.com
Lime Microsystems announces LimeSDR crowd-funding initiative a success
L
ime Microsystems has announced that the crowd-funding campaign to bring its LimeSDR software defined radio platform into full-scale production has been a resounding success with over 120 per cent of the goal pledged at the end of campaign. $610.659 has been raised and still continues to rise. The campaign, hosted on the Crowd Supply platform, was created to fund the final stages of development and mass production of the LimeSDR platform which will now go ahead.
The LimeSDR campaign has been both hugely ambitious and unique from the start, with an unusual feature of the campaign being the support of the UK’s largest operator, EE. This is the first time that a leading industry corporation has so publically backed a crowd-funding campaign of this sort.
A large aspect of the success of the campaign has also come down to the support and enthusiasm of individuals supporting the LimeSDR and pledging for boards. This community will now be able to develop the applications that will ensure
6 July/August 2016
the campaign’s vision of democratising wireless communication becomes a reality.
The LimeSDR platform is a low cost application- enabled software defined radio (SDR) platform that can be programmed to support virtually any type of wireless standard. From Wi-Fi, ZigBee and Bluetooth through to cellular standards such as UMTS, LTE and GSM and to the emerging IoT communication protocols such as LoRa - the platform offers endless wireless connectivity opportunities. Ebrahim Bushehri, CEO of Lime
Microsystems said, “We are absolutely delighted that the LimeSDR has succeeded. We have been blown away by the support from both the crowd, our partners and EE. However, this is only the start of the journey and we have an
Components in Electronics
ver a century ago, the Industrial Revolution (physical) changed our economy for the better as it
led to the growth of towns and cities with consequent mass production and movement of population. More recently, we have seen the Internet (digital) Revolution transform society, marking a major turning point for the economy too as most companies could apply digital technology with greater efficiencies and successes. The Industrial Internet Revolution is the next frontier, but what does this mean for our future? The Industrial Internet Revolution merges the physical with the digital giving the world a platform to exchange large amounts of data leading to huge economic developments and social advantages, such as: • GE predicts that by 2030, the industrial internet revolution will add between 10-15 trillion dollars to the global economy
• Business energy costs can be reduced by 70/80 per cent
• Arguably this will be the biggest driver of productivity and growth in the next decade
The technology that has made this possible is long range wireless technology (LoRa) and low cost sensors. LoRa targets tracking and monitoring applications with low data rates and a low-duty cycle for a variety of markets such as energy, location, utility infrastructure, environment, agriculture and public safety. The technology will allow greater automation of previously human- intensive meaning that there is greater productivity output per man-hour that is invested.
The arrival of low-cost sensors and LoRa will make the following a reality: • Smart farming using mapping and moisture sensors to keep track of changes in the soil
• Smart energy grids and meters allowing energy distribution to be managed in real time based on immediate data rather than historic patterns of energy use reducing overall costs
• Smart manufacturing that will transform traditional factories into profit centres
aggressive and ambitious roadmap around RF technology. With the success of the campaign we are determined to build on the momentum and are committed to making ever more powerful SDR technology available to an ever wider community.”
www.limemicro.com
• Smart cities that will use technology to improve the efficiency of services such as transport and street lighting to transform the quality of life of residents
There is little doubt that we are moving towards the Industrial Internet Revolution and it has the potential to change the world.
www.cieonline.co.uk
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