Military, Aerospace & Hi-Rel

April 2016

8µA Quiescent Current Surge Stopper

Linear's 8µA IQ surge stopper protects electronics from overvoltage & overcurrent transients

Linear Technology introduced the LTC4380, an ultralow quiescent current (IQ) surge stopper, providing compact overvoltage and overcurrent protection for always-on 4V to 72V electronics in automotive, industrial and avionic systems. The LTC4380 replaces traditional shunt circuits composed of bulky inductors, ca

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Date:

04/27/2016

Freebird Semi partners with EPC to develop rad-hard GaN power systems

Freebird Semiconductor announced the signing of an agreement with Efficient Power Conversion (EPC), a leading provider of enhancement-mode gallium nitride power transistors to develop products for use in high reliability, space, and harsh environment applications based upon EPC’s eGaN technology. Dr. Simon Wai

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Date:

04/18/2016

SiC MOSFET Intelligent Power Module

CISSOID delivers first SiC IPM prototypes to Thales

CISSOID, a leader in high-temperature and extended lifetime semiconductor solutions, announced the delivery of the first prototypes of a 3-phase 1200V/100A SiC MOSFET Intelligent Power Modules (IPM) to Thales Avionics Electrical Systems. This module, developed with the support of Clean Sky Joint Undertaking, wil

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Date:

04/18/2016

High isolation voltage flyback transformers - Part 1

Edgar C. Taculog, TT Electronics

Transformers can often provide an inexpensive solution for a variety of applications. The purpose of the transformer is to isolate the secondary side of the circuit from the primary power source, transfer power efficiently from the electrical source to the target load and protect users from hazards like electric sh

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Date:

04/17/2016

Optimizing LED power chains

Chester Firek, Vicor

LED technology has developed over recent years, and is now the obvious choice for many applications from energy-efficiency architectural lighting to outdoor displays. These applications tend to vary considerably, each requiring a different number, type, color and configuration of the LEDs, which means that driver ci

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Date:

04/17/2016

Ferrite Bead Demystified

Jefferson Eco and Aldrick Limjoco, Analog Devices

An effective method for filtering high-frequency power supply noise and cleanly sharing similar voltage supply rails (i.e. analog and digital rails for mixed-signal ICs) while preserving high-frequency isolation between the shared rails is the use of ferrite beads. A ferrite bead is a passive device that fi

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Date:

04/15/2016

Current-mode control part III

Ray Ridley, Ridley Engineering

In the third part of this series, we’ll see how Dr. Fred Lee’s analysis of current-mode control resulted in a high modulator gain, and also look at the consequences of this gain on current-loop predictions. Current-Mode Control Circuit Figure 1 shows a buck converter with peak current-mode control. T

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Date:

04/13/2016