Technical Features

February 2024
DC/DC Flyback Converter

Click image to enlarge

Figure 1: Power stage of the flyback converter (simplified)

Isolated flyback converters often use optocouplers in the feedback loop to regulate the output voltage. As part of the compensation circuit, its parameters such as CTR influence the control loop and must be taken into account in the flyback converter design. The flyback converter is an isolated switching power
Date:
04/01/2024
CoolSiC™ MOSFET 750 V G1 from Infineon Make Onboard Chargers Smaller, Lighter and More Efficient

Click image to enlarge

Figure 1: Electric vehicle stock by mode in the Announced Pledges Scenario, 2022-2030 IEA Global EV Outlook 2023

­The International Energy Agency (IEA) predicts that by 2030, 60 percent of the automobile market will consist of electric vehicles (EV), resulting in over 200 million electric powertrains on the road (Figure 1). In addition to this rapid growth, the automotive industry must integrate various other trends, su
. . . Learn More
Date:
02/29/2024

An Engineer’s Guide to EV Battery Management Systems

Click image to enlarge

Figure 1: An electric vehicle's battery pack. (Source: Nissan)

An EV's primary energy source is a battery pack (Figure 1). A pack is typically designed to fit on the vehicle's underside, between the front and back wheels, and occupies the space usually reserved for a transmission tunnel, exhaust, and fuel tank in an internal combustion vehicle. Keeping the pack as low as poss
. . . Learn More
Date:
02/06/2024
High Voltage GaN Transistors for Speed and Efficiency

Click image to enlarge

Figure 1: Doped silicon transistor cross section compared to GaN HEMT

The high electron mobility transistor (HEMT) is a relative newcomer in the world of mass-produced power switching devices.  Unlike its traditional doped Silicon counterpart, HEMTs are heterojunction devices built using two semiconductor materials with distinct bandgap voltages.  First demonstrated in the late 19
. . . Learn More
Date:
02/04/2024
Power Supply Management of GaN MMIC Power Amplifiers

Click image to enlarge

Figure 1. Typical GaN PA control system

Systems that incorporate highly integrated and highly sophisticated, high power radio frequency (RF) GaN power amplifiers (PAs), such as pulsed radar applications, are a constant challenge for today’s digital control and management systems to keep up with these ever-increasing levels of sophistication.These co
. . . Learn More
Date:
02/01/2024
The Ascent of GaN

Click image to enlarge

Table 1: GaN (EPC2071) vs. Silicon Comparison

The adoption of gallium nitride (GaN) in power devices has seen significant growth in recent years. In this article the various factors impacting the adoption of GaN are examined as well as how these challenges are being addressed and overcome.  With over 14 years of volume production experience, EPC has id
. . . Learn More
Date:
02/01/2024
Separating Charging and Load Requirements in EVs

Click image to enlarge

Figure 1. Share of xEV in percentage

The high-voltage energy stored in the EV battery is converted by HV-LV DCDC conversion systems into a low voltage that can be used by the vehicle's electrical and electronic systems. This conversion is critical to the intended operation of the vehicle as it contributes to maintaining the power supply to vital systems
. . . Learn More
Date:
02/01/2024
The Benefits of Magnetically Geared Drives and Motors

Click image to enlarge

Figure 1: Micromobility

Quieter, cleaner and in the case of lightweight electric vehicles (LEVs) much smaller, today’s electric, hybrid and micromobility vehicles offer real potential to mitigate many of the problems associated with the UK’s noisy, congested and polluting traffic. What’s more, as the technology used in these vehi
. . . Learn More
Date:
02/01/2024
Taking Aerospace and Defense to New Heights

Click image to enlarge

Figure 1: Personal use electric aircraft are being developed by many companies around the world, most powered by multiple permanent magnet motors

High-performance permanent magnet motors are propelling major technological progress in the aerospace and defense sectors. These mission-critical applications include propulsion and power generation systems in military aircraft, surface ships, submarines, drones, portable munitions, and armored vehicles. Furth
. . . Learn More
Date:
02/01/2024
Say Hello to Bidirectional Topologies in EV Charging

Click image to enlarge

Figure 1: If the charging infrastructure and power grid are connected by a bidirectional converter, the charging hub functions as a source of power that can support the grid as necessary

The average gas station fill-up for vehicles only takes two minutes. With more electric vehicles (EVs) hitting the road every day, drivers’ expectations of similar conveniences remain unequivocally strong, driving the need for DC fast charging capabilities and infrastructure. To facilitate this paramount and
. . . Learn More
Date:
02/01/2024
How Wolfspeed Power Modules are Revolutionizing 3-Phase Industrial Low Voltage Motor Drives

Click image to enlarge

Based on the most conservative estimates, electric motors account for more than 50% of all industrial electricity used globally, and 45% of all global electricity. Making industrial motor drive systems even a fraction more efficient would significantly impact global energy consumption and reduce environmental im
. . . Learn More
Date:
02/01/2024
Archives

 



-->