Author Archives: steve bush

Photo-acoustic chemical cell miniaturised by micromachining

This photo-acoustic sensor has been constructed from two silicon wafers: A sensor wafer includes a MEMS mechanical diaphragm microphone and piezoresistive gauges, together with capillaries and fluidic ports, and a second wafer caps the first, and includes the photo-acoustic cell, an expansion volume, SiGe waveguides to get light into the cell and electric contacts. It was made ...

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650V SiC FET scores 34mΩ in 8×8 package

UnitedSiC has introduced what it claims is industry’s lowest Rds(on) 650V SiC FET in a low-profile DFN 8×8 surface-mount package. Called UF3SC065030D8S, its Rds(on) is 34mΩ, and  UF3SC065040D8S is a cheaper partner device that achieves 45mΩ. “Both SiC FETs have a current rating of 18A (limited by wire count in the package), and a maximum operating ...

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More on: CMOS quantum chip solves ‘travelling salesman’ problem for 22 cities

Electrical engineers at the Tokyo University of Science have created a CMOS chip that implements a quantum annealing processor capable of solving the traveling salesman problem for 22 cities in a second. According to the researchers, a conventional 30Goperation/s, high-performance von Neumann architecture CPU that can solve a 16 city travelling salesman problem in 12 minutes, would require about ...

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ML algorithm judges ‘fairness’ in AI results

Artificial intelligence algorithms can be embedded with fairness notions, according to Queen’s University Belfast, where such a machine learning (ML) algorithm has been developed. This is not the first time a fairness algorithm has been created, explained Queen’s researcher Dr Deepak Padmanabhan, but it is the first time that an algorithm can handle more than ...

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PoL dc-dc is rad hard for satellites

Intersil has announced a radiation hardened power chip combining buck and linear regulators for medium Earth orbit (MEO) and geosynchronous (GEO) long duration space flight, claiming it to be the first. Intended to support FPGAs and DDR memory, the part has been dubbed ISL70005SEH and combines a 95% synchronous buck with 75mV drop-out linear regulator. ...

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915MHz radio sensor module reaches 10km

Würth Elektronik is aiming at the American market with a 915MHz wireless sensor with 10km range as well as FCC and IC module certification. Called Themisto-I, it is intended for proprietary IIoT/M2M networks. Point-to-point, star or mesh operation is possible. RF output from the 17 x 27 x 3.8mm module is 25dBm. “With the appropriate broadband profiles and ...

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2W blue laser for stage lighting

Osram is aiming at rock and pop gig lighting with a bright blue laser for spotlights and vector projectors. “Lasers combine an outstanding form factor with excellent beam quality, making them particularly suitable light sources for show lasers and stage lighting. In terms of brightness, laser diodes offer some advantages over LEDs,” according to the ...

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Controller for USB Type-C power delivery

Diodes has announced a controller chip for mains-powered USB Type-C chargers between 18 and 33W. Called AP43771, it supports the USB power delivery (PD) revision 3.0 V1.1 and Qualcomm’s Quick Charge 2.0, 3.0, and 4/4+, as well as battery charging (BC) revision 1.2. It is intended to be designed into the secondary side of an ac-dc ...

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Quantum chip solves ‘travelling salesman’ problem for 22 cities

Tokyo University of Science researchers have built a chip-based quantum annealing processor that can solve the classically thorny ‘travelling salesman’ mathematical puzzle, which gets far more complex every time a new city is added, for up to 22 cities. According to the university, this is “something that would take about 1,200 years for a high-performance von ...

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Deeply-on-chip magnetics make agile PCUs and slash PCB footprint

New York-based fabless chip firm Ferric has teamed up with TSMC to put magnetic components on the metal layers of integrated circuits. The first product of the collaboration, Fe1038D, has a 2.0 x 3.2mm flip-chip die (<400μm thick) that includes all magnetics and passives needed to deliver 3A at between 0.6V and 1.5V from 1.8V-2.5V, with efficiency peaking ...

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