Author Archives: steve bush

Magnetic mono-layer boosts graphene spintronics

2D spin-logic devices could benefit from magnetic graphene that can efficiently convert charge to spin current, and can transfer this spin-polarisation over long distances, according to the University of Groningen. Graphene is a favoured amongst 2D materials for transporting spin information, but is cannot generate spin current unless its properties are modified – conventionally cobalt ferromagnetic ...

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Processes a trillion edge graph without touching main memory

Korean research institute Kaist has found a way to develop a one trillion edge graph algorithm on a single computer without storing the graph in the main memory or on disc. ‘Develop’ is the important word here, as the research covers honing algorithms on synthetic data sets rather than on real big data. “Graphs are ...

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PCIM: On’s 1.2kV SiC diodes and 650V superjunction mosfets

On Semiconductor announced 1,200V SiC diodes with automotive AECQ101 and industrial qualification at virtual PCIM. Of the diodes, On said: “The new design improves on the first generation SiC diodes thanks to a smaller die size and lower capacitance. NVDSH20120C, NDSH20120C, NVDSH50120C, and NDSH50120C deliver a lower forward voltage drop and a 4x increase in ...

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PCIM: IGBT gate drivers for MW-scale railway traction

Power Integrations is aiming at railway traction with a set of gate drivers for 130 x 140mm IGBT modules from manufacturers including Infineon, Mitsubishi, Hitachi and ABB. Numbered 1SP063xxxx1R, the drivers match the footprint of single-channel IHM IGBT-modules with 1.2 to 1.4kA outputs and 3.3kV blocking voltage. There are three boards in the set: the ...

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PCIM: Fast switching trench Schottky rectifiers are AEC-Q101 approved

Nexperia has extended its trench Schottky rectifier range with devices rated at up to 100V and 20A in the company’s ‘CFP’ packages with an internal copper clip (right), intended to have smaller footprints than SMA, SMB or SMC diodes. “Nexperia’s trench Schottky rectifiers combine low forward voltage and low Qrr to enable efficiency at high switching ...

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PCIM: IC generates 12V from 30V to 1,200V for automotive emergency traction inverter PSU

Power Integrations has announced a 900V version of its InnoSwitch3-AQ automotive-qualified isolated fly-back dc-dc converter IC family, and a reference design using it for a PSU that will create 12V from anywhere between 30V and 1.2kV. This huge input range is needed within the emergency dc-dc PSU built into electric vehicle traction inverters – the ...

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Tiny optical proximity detector works up to 200mm and down to 7μA

Vishay has created a complete proximity sensor inside a single surface-mount package – integrating laser (940nm VCSEL), photodiodes, amplifiers, ADC and DSP into 2 x 1.25 x 0.5mm. Called VCNL36825T, it can detect objects up to 200mm away through a hole as small as 1.6mm, and pulsed operation allows power to be reduced, to an average ...

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Eval kit for ventilator flow rate and pressure

Sensirion and Nicolay have teamed up to offer an evaluation kit that measures air flow and pressure for human ventilator development. The companies already have an evaluation kit for proximal measurements of inspiratory and expiratory respiratory gas flow rates – Sensirion makes the flow sensors and Nicolay the connector and cable. “Having received many inquiries from ...

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PCB-mount common-mode chokes for 10 to 50A and 300Vac

Schurter has introduced a series of through-hole PCB-mount common-mode chokes for use at between 10A and 50A and up to 300Vac or 450Vdc. For single-phase applications, DKIV-1 chokes are available with ferrite or nano-crystalline cores. “Like all other aspects of electronic design, the power section is often-times built today using discrete components on printed circuit ...

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Nvidia Jetson SBC supports Ubuntu, Jetpack 4.5 and Secureboot

Taiwanese computer maker Aaeon has signed a deal with Canonical to pre-install Nvidia Ubuntu on Aaeon’s Boxer-8200 embedded PCs which are built around Nvidia Jetson system-on-modules – removing the need for customers to flash an operating system image before first start-up. Systems with the Ubuntu OS will also include Jetpack 4.5 drivers and its toolkit ...

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