Author Archives: steve bush

PCIM: 200kW SiC inverter for automotive

Silicon Valley start-up Pre-Switch is showing a 200kW silicon carbide soft-switching automotive inverter at PCIM in Germany this week. Called CleanWave, it is an “evaluation system that enables power design engineers to investigate the accuracy of the company’s soft switching architecture and platform over varying load, temperature, device tolerance and degradation conditions”, according to Pre-Switch. ...

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PCIM: Exagan GaN applications centre in Toulouse, and USB 3.0 charger design

GaN-on-silicon power transistor maker Exagan has opened an applications design centre in Toulouse. Called ‘Power Solutions Center’, it will be operated with the firm’s technology partner CEA Tech, and follows the launch a GaN applications centre in Taiwan last year. “The Toulouse facility provides customers with new application-development and product-validation capabilities using specialised electronic equipment,” ...

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Buck-based USB-C battery charger can boost for USB-OTG

Maxim is aiming at charging lithium-ion or lithium-polymer cells from USB Type-C sources with the MAX77860 switch-mode buck charger that can flip direction, becoming a boost converter to power USB on-The-Go loads using the same inductor. Inputs can span 4V to 13.5V, and there is protection from input over-voltage up to 14V, according to Mouser, which is stocking ...

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Water means a second chance for over-looked organic semiconductors

Tiny quantities of water might be ruining potentially useful organic semiconductors, according to researchers at Linköping University, who have a way to fix it. Key to the issue are ‘traps’ – places where carriers – holes or electrons – get stuck and are unable to contribute to semiconductor action. “There are traps in all organic ...

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One day heatsinks might be made of polythene

MIT engineers have fabricated polythene films that conduct heat – not as well as copper (401W/mK), aluminium (237) or aluminium nitride (140–180) but, at 62W/mK, as good as steel and better than alumina (30), and much better than normal polythene which is an insulator at ~0.4W/mK. “We think this result is a step to stimulate ...

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Boost converter drives LED backlights and dims 100:1

Diodes has introduced a boost converter that can supply constant voltage or constant current to drive backlights, with a dimming ratio of 100:1. Called AL3353, it has an input voltage of 9V to 40V – maximum output voltage is dependent on the external mosfet used as a power switch Dimming is internally analogue, controlled by ...

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Green Hills adds support for Robot Operating System framework

Green Hills Software has up-graded two of its software tools for product developers working with Robot Operating System (ROS) middleware. The changes “enable ROS developers on Linux to develop and deploy their projects to Green Hills Integrity RTOS to meet the functional safety requirements that many ROS programs require”, according to the company. “Adding support ...

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Sat nav module adds inertial navigation for self-driving cars

U-blox is planning to inertial dead-reckoning to satellite-based signals to improve navigation in locations with poor reception – like challenging urban environments. To be implemented in ZED-F9K – samples planned from July – will be a multi-band GNSS (global navigation satellite system) receiver, inertial sensors (3d accelerometer, 3d gyroscope), signal processing algorithms and correction services ...

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Cyber attacks on UK companies, and advice on repelling them

UK manufacturing and technology sectors are vying for first and second place as the most cyber-attacked industry sectors, according to the 2019 Global Threat Intelligence Report (GTIR) from US firm NTT Security – the report is compiled from trillions of logs and millions of attacks, said NTT, whose data is analysed across 18 industry sectors. “While ...

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