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ELP225 packs mighty power in a small space

XP Power has revealed design features within its latest ac-dc power supply, dubbed ELP225, which can deliver 150W convection-cooled from a 51 x 102mm industrial ‘1U’ footprint package.

Only 32.3mm high, this is believed to be a power density record for the 1U open frame format. 225W…

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Simple BD768xFJ chip eases SiC into the mainstream

Rohm has introduced a silicon ac-dc controller chip for silicon carbide mosfets.

Rather than some multi-kW industrial motor drive, it is a simple 8pin ac-dc controller for 50W single-output designs.

“Until now there has not been a control IC that can sufficiently draw out the performance…

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3D printing novel optical fibres

Researchers at the University of Southampton will attempt to make novel optical fibres using 3D printing.

To make glass optical fibres, a block of glass called a ‘pre-form’ is heated close to melting point and pulled so that it gets longer and thinner – a process called ‘drawing’.

The fibre…

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LED-cooling dielectric beats copper in thermal conductivity

Dielectrics can conduct more heat than copper, claims Sheffield-based Litecool which achieves LED-cooling with a material it has branded Black X.

“It is an incredible material. We have always assumed dielectric materials will hinder the thermal performance of our LED packages but this material actually improves it,” said…

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Wood-derived substrate for microwave transistors

Fast flexible thin-film silicon electronics circuits that are bio-degradable can be assembled on a wood-derived substrate, claim researchers from the University of Wisconsin-Madison.

The transparent flexible biodegradable substrate is cellulose nanofibrillated fibre (CNF).

The team has to go to quite an effort to make its chip…

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Giant magnetoresistance could improve hard drives

German scientists have discovered giant magnetoresistance – the effect used in hard drive read heads – in niobium phosphide. They also identified graphene-like carriers in the 3D material.

“Until now, the computer industry has used various materials stacked on top of each other in a filigree structure to achieve this effect…

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30W dc-dc in one square inch from TDK

TDK has introduced 30W wide input range dc-dc converters in a 25.4×25.4mm (1x1inch) by 9mm high metal package.

Called CCG30, they operate over a 4:1 input range (9-36V or 18-76V) – so 12 and 24V, or 24 and 48V – and have six-sided shielding.

Output…

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Ultrasonic sensing MEMS predicts electric vehicle battery failure

French research lab CEA Leti is using ultrasonic sensing to detect imminent battery failure in electric vehicles, and has proposed a way to extend running life.

It has identified three causes of electric vehicle battery fires: connector failures, thermal runaway on charge or failure in associated electronics – at the same…

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LED lighting driver tunes to ZigBee for control

Yorkshire LED lighting driver maker Harvard Engineering has added ZigBee wireless control to its range of lighting power supplies.

The 33W driver, called CLZ and part of the firm’s CoolLED range, offers dimming down to 1% and includes a 2.4GHz radio – either built-in or remote (pictured).

Radio…

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30 years of satellites from deepest Surrey

Surrey Satellite Technology (SSTL) is celebrating 30 years of operations, from a tiny enthusiastic group at the University of Surrey in 1985, to 500 staff today with a satellite assembly line.

“We have come a long way together since the early days of our first microsatellites,” said founder Sir Martin…

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