99.3% efficiency from soft-switched 100kW electric vehicle traction inverter

Silicon Valley start-up Pre-Switch is claiming >99.3% efficiency at 100kHz and 100kW from its 200kW space vector modulated automotive traction inverter design, which uses 18x 35mΩ SiC mosfets in its three-phase bridge. The company’s topology, ‘called auxiliary resonant commutated pole’, is soft-switched to save switching losses, using a separate bank of relatively-small carefully-timed silicon IGBT series ...

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Q2 DRAM prices up by 18-23% QoQ

Q2 DRAM prices will rise by between 18% and 23% over Q1, reports TrendForce. The ASP of DDR4 1G8 2666Mbps modules has already increased by nearly 25% QoQ and prices are rising across various DRAM product categories in 2Q21, including DDR3/4 specialty DRAM, mobile DRAM and graphics DRAM. Server DRAM  prices are expected to rise ...

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End is nigh for not-spots, says DCMS

Mobile signal blindspots will be wiped out under government plans to level up rural areas with better connectivity and unlock tech innovation in the countryside, says the Department for Culture, Media and Sport. The government is proposing law changes to boost ongoing efforts to improve connectivity for  people who live, work and travel in rural ...

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Amazon secures launchers for 3,236 satellites

United Launch Alliance (ULA) is to provide Amazon with nine Atlas V rockets to launch the 3,236 satellites in Amazon’s Project Kuiper aimed at delivering broadband to remote parts of the planet. “We’re determined to make affordable broadband a reality for customers and communities around the world,” says Jeff Bezos,“ULA is a fantastic partner that’s successfully launched ...

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Imec’s Neuropixels 2.0 track individual neurons

Imec’s Neuropixels 2.0 build on the original Neuropixels probes released in 2017 and currently used in more than 400 labs. Neuropixels 2.0 are much smaller — about a third the size of their predecessors. They’re designed to record the electrical activity from individual neurons and have the unique ability to track this activity over extended ...

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DARPA plans a DRACO nuclear-powered rocket to cislunar space

DARPA – the US Defense Advanced Research Projects Agency – has chosen General Atomics Electromagnetic Systems (GA-EMS) to lead the design of a novel Nuclear Thermal Propulsion (NTP) system that will allow a rocket to operate in cislunar space. This is the region outside of Earth’s atmosphere to just past the moon’s orbit. Specifically, the ...

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