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EETE APR 2014

Reader O f f er Get creative with free LED application kit This month, Arrow Electronics is giving away ten XMC1200 lighting application kits, worth 100 Euros each, for EETimes Europe’s readers to win. Each kit combines Infineon’s brightness and colour control XMC1200 CPU board to drive flicker free LED dimming and colour changing, together with a colour LED card and a white LED card. Designed to shorten development times, this application kit is compatible with drivers spanning a wide power range, providing comprehensive and user-adjustable dimming controls. It can be configured within the accompanying DAVE graphical microcontroller development environment. The XMC1200 card comes with 200KB of Flash and a detachable Segger J-Link. The colour LED card features three RGB LEDs (10mA per channel) while the white LED card comes with 20 LEDs on four strings (20mA per channel). Both LED cards are equipped with an ambient light sensor, and connectivity options for DALI and RF, with additional DMX512 connectivity for the colour LED card. A temperature sensor completes the white LED card for optimum power management. Check the reader offer online at www.electronics-eetimes.com Audio converter has voice detection feature for home appliances IP-for-SoC provider Dolphin Integration has announced sCODp-MT1-VD.02, a voice-oriented converter supporting both analogue and digital microphones. The code builds a converter that focuses on voice recognition capabilities that include high Dynamic Range over gain range (DRgr) on ADC of 105 dB, a voice detection feature to automatically wake-up the system by voice, microphone inputs with independent Programmable Gain Amplifiers, and Automatic Gain Control (AGC) preventing saturation of the audio signal. Further, motor and wind noise filters to reduce the environment disturbance and enhance voice recognition quality. The small area and the low EMI emission of sCODp-MT1-VD.02 position it as a cost-effective converter for fabless companies which are active in the growing market of white electronic devices (smart Air conditioner, smart Fridge…) and brown appliance devices (Smart TV, Smart Radio…). sCODp-MT1-VD.02 includes unique features, such as spread spectrum and PLL-less functioning, to protect against any performance drop due to noise propagation issues. This product is delivered with its “noise tolerance template” and with advanced views (behavioural models) enabling noise propagation checks by the user. Further specifications include high SNR of up to 105 dB on the DAC (depending on the sound amplifier); 95 dB on the ADC, and THD of -85 dB on the DAC The IP is initially targeted at 130 nm processes, but is retargetable from 180 nm to 40 nm at both TSMC and SMIC. Dolphin Integration www.dolphin.fr Limiting post amplifiers operational at 12.5Gbps Micrel’s SY88073L and SY88083L limiting post amplifiers are designed for FTTH XGPON.2 ONU/ONT (Optical Network Unit / Optical Network Terminal) applications. They could also find use in continuous mode fibre optic or copper cable SFP+ transceiver modules for multi-rate applications from 1G to 12.5Gbps. Both devices offer user selectable LOS or SD status signals and a wide differential input voltage range of 10mVPP to 1800mVPP for extended link distance operation. Electrical hysteresis of 4dB is provided across a wide LOS/SD threshold range of 4.5mVPP to 30mVPP. Integrated 50 Ohm input and output impedances with CML output, with 30ps typical rise/ fall times, optimize high speed signal integrity while reducing external component counts and BOM cost. The TTL compatible JAM input enables a SQUELCH function by routing back the LOS or SD signal. Other features include selectable RXOUT+ / RXOUT- signal polarity (SY88073L). The SY88073L enables user adjustable decision threshold adjustment for optimized Bit Error Rate operation in noisy applications with asymmetrical noise distribution while the SY88083L provides a user selectable Digital Offset Correction function. Both devices offer a power supply range of 3.3V +/-10 percent and come in an industrial temperature range of 40 to +85-degC and a 3x3mm, 16 lead QFN package. Micrel www.micrel.com IGBT driver cores implement short-circuit soft shutdown IGBT driver manufacturer CT-Concept Technologie GmbH, a Power Integrations company, has announced products that include its SCALE-2+ gate driver chip set. SCALE-2+ technology enables soft shutdown (SSD) to be implemented in the event of a short circuit without requiring additional components. This is beneficial in applications with low stray-inductance where full Advanced Active Clamping – a method invented by Concept for shutting down IGBTs or MOSFETs in a controlled manner under any circumstances - may not be necessary. Concept’s SCALE-2 IGBT driver cores deliver cost, performance, size and reliability benefits. SCALE-2+ driver technology offers high levels of integration by including an integrated trigger mechanism which limits IGBT MOSFET Collector-Emitter, or MOSFET Source-Drain voltages in the event of a short circuit. The first product to ship with the SCALE-2+ chip set is Concept’s 2SC0106T2A0-12. This is a high-performance two-channel IGBT/MOSFET gate driver core for 1200V IGBTs in the 37 kW to 110 kW power range. The 2SC0106T2A0-12 is suited for servo drives used in industrial applications, UPS and solar inverters. It meets IEC 61800-5-1 and IEC 60664-1 standards for reinforced insulation. Power Integrations www.IGBT-Driver.com 46 Electronic Engineering Times Europe April 2014 www.electronics-eetimes.com


EETE APR 2014
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