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Single-die LED achieves efficacy of 200 Lumens per Watt at 350mA Cree has introduced what the company claims is the first commercially available single-die LED to achieve breakthrough efficacy of up to 200 lumens per watt at 350 mA. The Cree XLamp XP-L LED delivers up to 1226 lumens in a 3.45x3.45mm package and claims to enable an immediate performance increase of 50 percent or more as a drop-in upgrade for lighting designs based on Cree’s market-leading XLamp XP-G LEDs. As the brightest member of the industry’s only family of high-density class discrete LEDs, the XP-L LED also claims the industry’s highest optical control factor (OCF). XP-L’s high OCF will enable lighting manufacturers to improve the performance of existing lighting designs in the XP footprint, reduce the size and cost of new designs and create innovative new solutions to address applications ranging from lamps to stadium lighting. Characterized and binned at 1050 mA, 85°C, the XP-L LED is available in up to 90 CRI and color temperatures ranging from 2700 K to 8300 K. As a ‘successor’ product to the XLamp XM-L2, lighting manufacturers seeking ENERGY STAR qualification can use 3,000 hours of LM-80 data, potentially saving up to four months in the approval process. Product samples are available now and production quantities are available with standard lead times. . Cree, Inc. www.cree.com Triple alliance has platform for camera-based ADAS Vision-based driver assistance systems are increasingly connected to steering and braking systems of cars. Developers and system integrators for this reason are demanding turnkey platforms that meet the tough requirements of automotive ruggedness and reliability as well as applicable functional safety standards, in particular ISO 26262. Chipmaker Freescale, Green Hill Software and Neusoft have devised such a platform. By providing a combined hardware and software solution for automotive-related image processing systems, the trio enables developers to significantly streamline the development of complex algorithms and porting these algorithms to the respective target hardware. The solution to be provided by the alliance utilises the Apex Image Processing IP (ICP) from CogniVue which is sold through Freescale. Neusoft - despite its name a Chinese company - contributes ADAS image processing software which automatically adapts to the underlying silicon; Green Hill adds its safety-certified Integrity operating system along with its MULTI tool chain. The result is a holistic, ready-to-use image processing solution custom-made for ADAS applications such as pedestrian Hall effect switch does away recognition, traffic sign recognition or collision avoidance. with mechanical adjustments The MLX92242 from Melexis is a highly integrated Hall effect switch/latch IC designed for automotive applications, such as seatbelt latch detectors, seat position sensors or window Current probes boost accuracy in harsh electrical environments Wide-band screened CWT Mini Rogowski current probes from Power Electronic Measurements (PEM) use an electrostatic screening strategy that enhances performance and accuracy in the presence of large electrostatic interference signals. Its shielding technique, using a low sensitivity coil and low-noise signal-conditioning circuitry, gives the wide-band screened CWT Mini probe improved immunity to local dV/dt transients while maintaining small size, flexibility, and 3dB bandwidth of up to 30 MHz for a 100 mm coil. The probes feature a coil 4.5 mm thick with 5 kV insulation voltage, and can handle maximum current slope of 70 kA/μsec. The enhanced accuracy of a screened probe is required for applications such as measuring complex current waveforms in equipment such as UPS circuits, switched-mode power supplies and Variable-Speed Drive (VSD) inverters where high power density leads to high field strengths, or where the high speeds and high blocking voltages of siliconcarbide (SiC) devices call for higher probe bandwidth and better common-mode immunity. The CWT Mini probes eliminate the extra bulk and bandwidth restrictions imposed by conventional screening techniques, while delivering the known advantages of a Rogowski coil. These include zero insertion impedance, freedom from flying leads, isolated measurement, high peakcurrent rating, and the ability to measure small AC currents in the presence of large DC current. Power Electronic Measurements (PEM) www.pemuk.com lifters. Its non-volatile memory enables car manufacturers to carry out end-of-line (EOL) programming, allowing cancellation of all mechanical tolerances within the application. Programmable memory is used to enable the various tolerances that need defining for a specific application to be set and if necessary readjusted, before finally being locked. The range and resolution of programmable magnetic thresholds and thermal sensitivity coefficients allows the sensor working in conjunction with a magnet to easily implement a ferrous metal proximity sensing system. Since its temperature compensation characteristics can be programmed, the MLX92242 can be used with all kind of magnets - including low cost ferrite materials. The resulting cost-effective and very small ferrous proximity switch handily serves many limit position, proximity detection and encoding applications. Another differentiator of the MLX92242 is that it supports 2-wire rather than a 3-wire implementation, only needing use of the VDD and GND pins, but still providing all the necessary diagnostic capacity to respond if malfunction conditions occur. The advantage of this is that less wiring/cable harnessing is needed, allowing deployment into confined spaces. Melexis www.melexis.com 54 Electronic Engineering Times Europe June 2014 www.electronics-eetimes.com


EETE JUN 2014
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