Power converters with GaN

by Alex Lidow, CEO, Efficient Power Conversion Corp. It can be tricky to analyze power supply designs incorporating GaN power devices. Here are the basics of calculating losses…

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High switching frequencies come to laptop chargers

New designs for switch-mode power supplies are pushing frequencies higher as a way of cramming circuitry into smaller and smaller volumes. An indication of the trend can be…

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Move over, wave power — Vortex device aims to harvest energy from water

Pilot projects aimed at generating electrical energy from the motion of ocean waves have gotten a lot of press. The Scottish government, for example, has now approved the…

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Better barriers make lithium batteries hard to beat

An advanced barrier between the electrodes in lithium-ion batteries could help head off fires and overheating that occasionally arises in laptops or industrial applications. The barrier uses nanofibers…

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Gallium Nitride power FETs go into mass production

Fujitsu Semiconductor group’s CMOS-compatible, 150-mm wafer fab in Japan has started mass production of Gallium Nitride (GaN) power devices for switching applications. The facility is providing GaN foundry…

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Power supply makers get ready for tighter energy efficiency regs

Tougher Energy Star standards kick in next year. Some manufacturers may not be able to handle its more stringent mandates. The latest round of energy efficiency standards for…

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The next generation of power electronics engineers

by Leland Teschler, Executive Editor, @DW_LeeTeschler Who do you suppose can ace a ten-question quiz about using power transistors? We asked ourselves that question recently when we ran…

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Thermal management and cost of ownership in power systems

by Jerry Hovdestad, Director COTS Engineering, Behlman Electronics To an engineer, power management is also thermal management. Excess heat generated by power systems places additional burdens on their…

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Small batteries pack big wallop for wireless devices

by Sol Jacobs, Tadiran Batteries Battery makers have devised chemistries that put a lot of energy in a tiny volume. Generally speaking, every penny counts when it comes…

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Choking off EMI/RFI in off-line switchers

by Jim Earley, President, Premier Magnetics Electromagnetic interference (EMI) and radio frequency interference (RFI) are natural byproducts of switching power supplies. Much of this noise arises as a…

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Cool calculations

by Steve Griffiths, Manager of Technical Sales and Marketing, Ametek, Dynamic Fluid Solutions Business Unit It pays to do a back-of-the-envelope thermal analysis before cranking up a CFD…

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Working with Wirewounds

by Kory Schroeder, Director of Product Marketing and Engineering, Stackpole Electronics Inc. For high currents, axial-leaded wirewound resistors are often good candidates because they can handle up to…

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How to evaluate cutting-edge power semiconductors

by Ryo Takeda and Alan Wadsworth, Keysight Technologies Investments in power semiconductor devices continue to grow. Performance and reliability also improve each year through the employment of new…

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Selecting power supply connector pins

by David Norton, TDK-Lambda Americas Designers can avoid reliability problems by acquainting themselves with the way connector pin materials stand up to repeated use and corrosion. Examine the…

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Carrying the Heat Away from Power Module PCB Designs

ShareBy Jerome Johnston Power system designers are always seeking higher power capability built on smaller footprints. This is especially true for datacenter servers and LTE basestations that support…

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Methode SmartPower Stack

Methode Electronics’ Power Solutions Group, a division of Methode Electronics, Inc.(NYSE: MEI), a global manufacturer of custom designed electro-mechanical devices, announced its SmartPower Stack™ family of power conversion products is now TUV-Rheinland recognized for use per UL508c requirements. These products are capable of power conversion outputs from 30kW up to 100kW in both DC/DC (single

This week’s top power electronic posts from

Two different grounds, one transformer — On switched mode power supplies….I have seen many circuit block diagrams where the ground connections on either side of the transformer have…

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AVX (1)

High-voltage stacked capacitors handle 5 kV

AVX Corporation, a manufacturer of passive components and interconnect solutions, has introduced a new RoHS-compliant series of high voltage, DIP-leaded stacked SMPS capacitors. Rated for 1,000–5,000V and capacitance…

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Allegro (1)

Multiple-output regulator handles auto LCDs

Allegro MicroSystems, LLC announces a new AEC-Q100 qualified, multiple-output regulator for powering automotive LCD displays. Allegro’s A8603 operates with fixed switching frequency that can be either programmed or…

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Excelsys (1)

500-W certified for medical, industrial uses

Excelsys Technologies announces the XS500 series of high-efficiency, 500W convection-cooled AC/DC power supplies. With typical efficiency of 92%, and operating from 90-264VAC, the XS500 delivers 500W of output…

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1 (1)

Understanding opamp input stages

Choosing an opamp and getting the best out of it involves some understanding of what is inside the chip, particularly the input stage. Simple bipolar input stage A…

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Littelfuse (1)

ESD diode arrays optimized for USB circuits

Littelfuse, Inc. (NASDAQ:LFUS) introduced its PULSE-GUARD® PGB2 0201 Series Surface Mount Polymeric ESD Suppressors, which are the smallest size polymer composite electrostatic discharge (ESD) suppressors in the market….

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Varistors handle automotive transients

AVX Corporation, a manufacturer of advanced passive components and interconnect solutions, has extended the voltage and energy ratings of its radial leaded TransGuard® Automotive Series with the addition…

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l-com (1)

DIN-mounted surge protector

L-com Global Connectivity, a designer and manufacturer of wired and wireless connectivity products, announced that they have released a new DIN mountable 3-stage lightning protector to protect RS232…

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Cree (2)

Cree MOSFET, Schottky diode design kit

Cree, Inc. has introduced a new Cree MOSFET design kit that includes all of the components needed to evaluate Cree® MOSFET and Schottky diode performance in a configurable…

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