Technical Features

October 2019
Optimizing Flying Capacitor Multilevel Converters for GaN Technology

Figure 1: Power schematic circuit for the bi-directional three-level, two-phase converter

Introduction Modern power systems demand higher efficiency, increased power density, and reduced electromagnetic interference (EMI)—all while adhering to shrinking size constraints. Among the converter topologies addressing these challenges, the Flying Capacitor Multilevel (FCML) converter stands out for it
Date:
05/30/2025
Moving from Electromechanical to Solid-State in Relays and Circuit Breakers

Click image to enlarge

Figure 1: Contact wear in an electromechanical relay

As a mature technology, electromechanical relays and circuit breakers are well established, however they continue to suffer from some inherent weaknesses. Moving to solid-state technology can address these but introduces its own challenges. So, what is the right solution? In the movies, whenever the lights go
. . . Learn More
Date:
10/31/2019

Bipolar Power Supplies Based on the Common Buck Converter

Click image to enlarge

Figure 1. Electrical schematic of the two terminal, bipolar, adjustable power supply.

A bench-top power supply (PS) tends to have an even number of terminals (ignoring the chassis port)—with one positive terminal and one negative terminal. Using a bench-top supply to produce a positive polarity output is easy: set the minus output to GND and the positive output voltage at the plus output. It is
. . . Learn More
Date:
10/29/2019
GaN in Space

Click image to enlarge

Figure 1. Solar panels deployed on a satellite (Image courtesy of NASA)

The commercial space sector led by Space X and Blue Origin, plus companies like Northrop Grumman and Boeing, have given new life and accelerated NASA’s plans for the journey to Mars. The addition of the Artemis program, to establish a Moon base for the first leg of exploration and mining in the mid-2020s, will
. . . Learn More
Date:
10/29/2019
Archives