30W dc-dc converter for railway and industrial use

P-Duke has announced a rugged 30W dc-dc converter in a 1 x 1inch (~25 x 25mm) package for railway and industrial applications. Called the RCD30W series, the converters have 4:1 input voltage ranges suited to rolling stock, with a choice of 9-36V, 18-75V or 36-160V. There are single and dual output models including: 3.3, 5, 5.1, ...

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Another reason why Li-ion cells don’t like fast charging

Argonne National Laboratory has been looking into lithium-ion cells in great detail, and its scientists have found a nano-scale deterioration mechanism to add to the reasons that fast-charged Li-ion batteries degrade in electric vehicles. In use, lithium ions move in and out of the anode, which is usually made from graphite particles. The ions slide ...

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Superjunction mosfets for server power supplies

Alpha and Omega Semiconductor has announced a series of super-junction power mosfets. Branded αMOS5, its first members are both 600V 250A transistors in TO-247 packaging: the 40mΩ AOK040A60, and the 42mΩ AOK042A60FD ‘fast body diode’ device – reverse recovery is typically 252ns (25A, 100A/μs, 400V) compared with 525ns in the 40mΩ part. “The optimised capacitance of the 40mΩ ...

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US FTC sues to stop Nvidia takeover of Arm

The US FTC has initiated legal action to prevent Nvidia’s acquisition of Arm. Theis follows prolonged investigations into the deal by the UK and EU. The FTC’s action action the merger will be heard at an administrative trial starting August 9th 2022. ‘ The proposed vertical deal would give one of the largest chip companies control ...

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Melexis launches compact LIN BLDC-motor pre-drivers

Melexis, the Belgian auto IC specialist, has revealed new LIN BLDC-motor pre-drivers that combine small size with high performance and power capability for automotive mechatronic applications. The MLX81340 (32KB Flash) and MLX81344 (64KB Flash) integrate three channels of high-side and low-side drivers. They control external NFETs with up to 60nC capacitance to handle applications up to ...

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