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EETE FEB 2015

A49E_EETimes_2_375x10_875_A45.qxd 1/5/15 3:59 DC-DC AC power analysis and oscilloscope display, in a single instrument CONVERTERS Keysight Technologies has introduced a power analyser with touch-operated oscilloscope NEW AVP/AVN SERIES! 10,000 VDC Outputs Now in Miniature Design 0.5” x 1.0” x 0.5” • Isolated • High Reliability • 6,000, 7,000, 8,000, 9,000, 10,000 VDC, positive and negative output models • 1.25 watt output power, -25° to +70°C operating temperature standard, no de rating • 5-12-15-24 and 28 VDC inputs standard • Military Upgrades Available Expanded operating temperature, -55° to +85°C available - Selected MIL-STD-883 screeening available • Free review of any additional requirements and specifications you may have to comply with • Fully encapsulated for use in harsh environmental conditions For full characteristics of these and the entire PICO product line, see PICO’s Full line catalog at www.picoelectronics.com PICO ELECTRONICS, Inc. 143 Sparks Ave., Pelham, New York 10803 Call Toll Free 800-431-1064 FAX 914-738-8225 E Mail: info@picoelectronics.com Pico Representatives Germany ELBV/Electra Bauemente Vertrieb E mail: info@elbv.de Phone: 49 089 460205442 Fax: 49 089 460205442 England Ginsbury Electronics Ltd E-mail: rbennett@ginsbury.co.uk Phone: 44 163 429800 Fax: 44 163 4290904 waveform display functions; engineers will no longer need two separate instruments to characterise power waveforms. There will be two basic versions, for single-phase and 3-phase power analysis. Combining accurate power measurements and touch-driven oscilloscope waveform viewing capability in a single instrument, the IntegraVision power analyser is intended for engineers who are designing and testing electronic power conversion systems to access dynamic views of current, voltage and power. Keysight contends that although some available power analysers offer good measurement accuracy, they are cumbersome to use and lack the ability to characterise power consumption under dynamic conditions. Engineers have needed a power analyser to make accurate measurements and an oscilloscope to visualize repetitive and single-shot events such as turn-on and occurrences of transients. The IntegraVision power analyser has isolated inputs rated up to 1,000 Vrms (Cat II). The instruments offer external sensor inputs and 2A(RMS) and 50 A(RMS) direct current inputs, standard on all channels. The external sensor input supports current probes and transducers up to 10V full scale. Eliminating a separate oscilloscope in the measurement setup decreases test complexity and reduces configuration time, Keysight says; its IntegraVision power analysers are designed to quickly and interactively measure AC and DC power consumption, power conversion efficiency, operational response to stimulus, and common AC power parameters such as frequency, phase and harmonics – all with 0.05% basic accuracy and 16-bit resolution. The power analyser enables engineers to characterise power consumption under highly dynamic conditions with 5 Msamples/sec digitising rate and 2 MHz bandwidth. Keysight Technologies www.keysight.com Cell-balancing IC facilitates energy recuperation application design The BD14000EFV-C from ROHM Semiconductor is a cell-balancing chip that helps reducing the size of electric double layer capacitors (EDLCs) in energy regeneration applications in hybrid electric vehicles and industrial equipment. The device also improves stability of such circuits as well as the operating life for EDLCs. The chip integrates over 20 discrete components required for EDLC cell balancing on a single chip, reducing mounting area by 38% over conventional solutions while eliminating component variations, making it easier to configure compact, high reliability EDLC systems with up to six cells. Multiple ICs can be connected in series to enable simultaneous control of even more cells. The cell balancing voltage can be set between 2.4V and 3.1V, ensuring support for a variety of EDLCs. Flag output is also built in, along with an over-current detection voltage function with adjustable detection voltage setting based on the cell balancing voltage. The chips is qualified for automotive use according to AEC-Q100. Compared to other storage devices, EDLC offers faster charge/discharge performance, longer life, and greater safety while minimizing environmental impact, making it the solution of choice for a variety of applications including automotive and industrial systems. When connecting multiple EDLCs in series to support higher voltages, the voltage applied to each EDLC cell may vary, which can adversely affect the lifetime and shorten the amount of time they can be safely used. Up to now cell balancing operation has been achieved through discrete configurations, making it necessary to address a number of issues such as board space and design load in order to minimize fluctuations while maintaining reliable cell balancing operation. ROHM Semiconductor www.rohm.com/eu www.electronics-eetimes.com Electronic Engineering Times Europe February 2015 45


EETE FEB 2015
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