042-043_EETE-VF

EETE JULAUG 2013

Smart-meter SoC supports Meters-and-More open communication standard STMicroelectronics has announced a smart-meter IC with builtin support for the Meters-and-More open communication standard, which enables widespread interoperability among smart metering equipment using Power Line Communication (PLC). The ST75MM is claimed to be the first to embed hardware and communication protocol support for Meters-and- More, simplifying meter design to ultimately enable faster, lower-cost and reliable deployments. The IC enables designers to benefit from the protocol’s strong features for smart meter and advanced metering infrastructure applications, such as short messages, robust encryption and authentication features, support for network configuration and management, and retransmission management. First samples of the ST75MM, in the 7x7mm QFN 48 package, will be available to selected customers by October 2013. STMicroelectronics www.st.com PCB terminations enable flexible power distribution in lighting and control systems Harting’s new Han-Fast Lock PCB termination system provides simple solder-free push-fit single-wire connection to printed-circuit boards, greatly enhancing the ease and flexibility of power distribution for entertainment equipment such as lighting dimmers, Power Supplies and winch/hoist motor controllers. Powerline terminations can now be taken from any point on the printed-circuit board without the need for tracks to be extended to one specific connection area. As a result, costs are reduced because of the simplified design and savings in real estate. This approach also eliminates the possibility of concentrated “hot spots” and therefore allows higher currents to be handled. The easy “push/click” Han-Fast Lock PCB termination fits securely in the standard plated-through hole with pad and can handle up to 60 A for discrete wire stranded conductors from 4 to 10 mm2. Undamaged contacts can be extracted and re-fitted up to ten times, simplifying equipment maintenance. In addition, during the production assembly process the connection for the external power wiring can be done after the soldering of the sensitive electronic components. Harting www.harting.com 125°C, ROHS compliant multilayered polymer capacitors Cornell Dubilier’s Type CS multilayered polymer capacitors are designed for 125 °C applications with 6/6 ROHS compliance. Terminated with multiple pin connections, Type CS capacitors have low equivalent series resistance making them an excellent choice for switching power supplies, DC to DC Converters and other high ripple current applications. Available in capacitance values ranging from 2.0 μF to 10.0 μF, voltage ratings of 50, 100, 250, 400 and 500 Vdc, and current ratings up to 18A rms, Type CS capacitors cover a broad range of applications in power electronics where high capacitance and high current are needed for DC filtering. Type CS capacitors have multiple pin leads, up to 18 on the larger sizes, and UL94V-O rated epoxy exterior with the ability to pass 85 °C/ 85% RH requirements for demanding applications in military vehicles and aerospace. Cornell Dubilier www.cde.com Long-range RFIC platform has a range of up to 15km for M2M deployments With a range of up to 15km, the SX1272 RFIC from Semtech enables metering, control and sensor applications. This device integrates Semtech’s new LoRa (long range) modulation technology to enable drastic range improvements over alternative modulation methods. In comparison, the maximum distance today of a smart meter transceiver in Europe using FSK modulation is between one and two kilometers. The additional range provided by LoRa will eliminate the need for repeaters in these applications, significantly simplifying the system design and lowering the total cost of deployment. The range extension provided by LoRa also makes the device suitable for emerging smart city, Internet of things (IOT) and machine-to-machine (M2M) applications. The SX1272 achieves receiver sensitivity up to -137 dBm using a low-cost crystal. This compares to today’s stateof the-art FSK devices that can achieve sensitivity of -115 dBm with a comparable crystal or -125 using an expensive temperature controlled crystal oscillator (TCXO). Additionally, the SX1272 has a 25 dB improvement over FSK devices for rejecting in-band interfering signals. The SX1272 supports GFSK, FSK, GMSK, and OOK modulation in addition to LoRa and is designed to support WMBus, IEEE 802.15.4g (SUN), FCC 15.247, ARIB T96/108, EN 300-220 as well as other worldwide standards and regulations. Operating from a 1.8 to 3.7V supply range, the SX1272 draws 9.7 or 10.8mA for the receiver, 28mA for the transceiver at +13dBm, and has a sleep current of 100nA. It supports bit rates up to 300 kbps. Semtech www.semtech.com www.electronics-eetimes.com Electronic Engineering Times Europe July/August 2013 41


EETE JULAUG 2013
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