Technical Features

November 2015

Figure 1a here

Figure 1a: Saturation current (Isat) comparison between a hard saturation ferrite power inductor (orange color) and soft saturation powdered alloy power inductor (blue color) at different ambient temperatures displayed by REDEXPERT. Saturation at an ambient temperature of 20ºC

Molded Power Inductors

By: Carlos Farnos, Dr.-Ing. Efrain Bernal / Editor: Gerhard Stelzer, Würth Elektronik eiSos GmbH & Co. KG

Higher power requirements and miniaturization expose passives to rising temperatures, increasing the probability of thermal aging. This article explores how to select molded high-current power inductors, which are exposed to high temperatures for an extended time. The constant market demand to increase power density

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Date:

09/28/2024

Improving BLDC motors with sensor-less control

Thomas Freitag, Melexis

The implementation of 3-phase brush-less direct current (BLDC) motors is becoming increasingly widespread in contemporary automobile designs. There are now a multitude of different places inside the latest vehicles (from luxury right through to economy models) where they can be found - having proved themselves to

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Date:

11/06/2015

Powering wearable wellness tech

Steve Knoth, Linear Technology

Once limited to simple devices like walking or running step counters, wearable devices have become more advanced seemingly overnight. From vibration-from-speech generating vests for the deaf, to Google Glass, to advanced fitness activity trackers, to night vision equipment, to heads-up imaging displays, wearable de

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Date:

11/05/2015

Using point-of-load modules

Alan Elbanhawy, Exar

Despite the development of ultralow power integrated devices, the overall demand for power at a system level is only increasing. At the same time, OEMs remain under pressure to make their end-applications physically smaller, which continues to drive demand for smaller and more efficient power supplies. While improveme

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Date:

11/05/2015

Assessing next-generation discretes

Dr. Thomas Barbieri, Wolfspeed, A Cree Company

When the first generation of silicon carbide (SiC) Schottky diodes was introduced more than 10 years ago, their widespread adoption was somewhat challenged by unforeseen dV/dt limitations within certain manufacturers’ devices. In particular, devices with lower dV/dt capability were susceptible to failure from larg

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Date:

11/05/2015

The power in small cells

Maurizio Salato, Vicor

The longstanding worldwide trend in telecommunication has been away from fixed (wireline) service and towards wireless communication (see Figure 1). Meanwhile, as part of the convergence of tele- and data-communication, network traffic has been increasing by an order of magnitude roughly every four to five years. Fo

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Date:

11/05/2015

Improving power density and efficiency in servers and telecom

Milko Paolucci, Application Engineer, Infineon Technologies

The explosion of Internet applications and data usage has put a great deal of pressure on servers and their related infrastructures. This massive growth of resources poses questions on energy demand to the major Internet providers and server makers, increasing the demand for more efficient energy utilization. Every wasted wa

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Date:

11/05/2015

Connecting mobile medical devices

Anthony Kalaijakis, Molex

Advanced technologies are driving innovations in mobile healthcare delivery - exciting diagnostic and monitoring telehealth and eHealth devices that allow physicians to reach more people more efficiently, even in remote regions of the world. Optimal patient comfort and mobility depends on packaging more features in

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Date:

11/01/2015