Power

Lithium-carbon dioxide batteries have theoretical promise, including in aviation where the lightweight materials are desirable – it might might make good use of Mars’ 96% CO2 atmosphere, for example. Headline figures are a theoretical specific energy density of 1,876Wh/kg and a ~2.8V discharge potential, but in practical terms the technology has not even reached infancy. To build a solid foundation for its development, a ...

There will be a new player in the dynamic silicon photonics sector, as Synopsys and Juniper Networks announce a partnership to form a new, separate company, with Synopsys as the majority owner. As yet, unnamed, the company will offer an open silicon photonics platform (integrated lasers, optical amplifiers) and photonic components. The companies believe that this platform will lower the ...

The CBI series of DC-UPS helps power system designers meet tight power budgets by intelligently managing the available power between the load and the battery, explains John Stone, Sales Director, Relec Electronics. Adel Systems has developed an integrated power solution, with diagnosis, back-up internal power sharing and the MODbus communication protocol. Today’s smart cities require a range of information and communications ...

GaN Systems is claiming “the world’s smallest 65W and 100W GaN chargers” at APEC this week. Made with power design company Rompower, the 65W charger is 30.5 x 35 x 46.6mm (21.4W/in3). Peak efficiency is ~94.5% (115Vac) or ~95% (230Vac). For the 100W unit, GaN Systems has given four dimensions: 28.6 x 44 x 35 x 67mm (Electronics Weekly has asked ...

NXP and Hitachi have co-designed a gate driver evaluation board for Hitachi’s 1.2kV RoadPak SiC mosfet half-bridges. The half-bridges are ~75 x 70mm and come in 580, 780 and 980A versions which are liquid-cooled – one side having a pin-fin array (just visible right) which has to be sealed into a water-glycol filled cooling manifold. Junction to fluid resistance is typically ...

A low-noise dc-dc converter and a low-noise LDO are debuting on TI’s APEC stand, alongside an 11kW 800V GaN three phase inverter design. LMQ66430 is a 36V 3A buck converter that includes two input bypass capacitors and one boot capacitor and includes the company’s ‘dual random spread-spectrum’ jittering technique, “enabling engineers to easily meet CISPR 25 Class 5 EMI standards while offering 1.5µA ...

Last month, government funding body UK Research and Innovation revealed the winners in its £22m Supply Chains for Net Zero Competition – announced in March 2021 and focused on supply chain development for power electronics, electric machines and drives (PEMD). “The coming electric revolution presents an opportunity to put the UK at the forefront of a burgeoning industry, creating manufacturing jobs and ...

Allegro MicroSystems has released two automotive magnetic sensors, one for crankshafts and one for camshafts, both using the giant magnetoresistance (GMR) effect. Although both come in a simple three-pin single in-line package, they are sophisticated digital processing ICs, and system-in-packages as they also incorporate a bias magnet and EMC protection components. Crankshaft The ATS16951 crankshaft sensor is designed to be a ...

Power over Ethernet (PoE) is rapidly gaining market share, in some rather unexpected places, writes Philip Lechner of Avnet Abacus. In fact, for a technology with relatively humble origins, PoE is shaping up very well indeed. A recent report from ResearchAndMarkets.com predicts that the global market for Power Over Ethernet (PoE) Solutions will reach $1.1 Billion by 2025, hitting a 10.8% ...

Alpha and Omega Semiconductor is aiming at servers with a pair of 600V super-junction mosfets in 8 x 8 x 0.9mm DFN8x8 packaging, with a Kelvin source. AONV110A60 has 110mΩ on-resistance, and AONV140A60 has 140mΩ. “Years ago, we could hardly imagine high voltage DFN8x8 devices widely adopted for server systems above 400W. People used packages such as TO-220(F) or D2PAK. Given the large ...