Power Electronics

SiC MOSFET Drives Powertrain Inverter Performance

Component R&D activity continues to yield higher-performance devices, characterized by higher efficiency and better electrical characteristics. One focus is silicon-carbide (SiC) technology, which can achieve the same electrical resistance as silicon but with a smaller mass, thereby enabling smaller, more efficient power devices. Because switching losses are reduced with SiC, high-frequency operation is possible using…

Design Efficient, High-Density Power Solutions with GaN

Power-switching devices based on gallium-nitride (GaN) technology are in volume production now and delivering high efficiency and power density in real-world power applications. This article will examine how to implement high-power solutions with GaN technology, presenting application examples that demonstrate how GaN devices can effectively work even beyond 600 V. GaN devices differ from best-in-class…

Wideband Materials Enable Next-Gen Power Strategies

In today’s power electronics products, quality and reliability are a given, and the design focus is on maximizing efficiency and power density while minimizing costs. Dramatic increases in operating frequency challenge current design practices to improve electromagnetic interference/compatibility (EMI/EMC) performance and manufacturability. Recent advances in wide-bandgap (WBG) power semiconductors make these divergent aims achievable. The…

Addressing the Need for Efficient Power Management

A critical problem for many design projects is power. Power management plays an essential role in every electronic device and affects the reliability and performance of the entire system. In this issue, we present various power management strategies to help designers analyze and optimize their products’ energy profiles. The need for more efficient power conversion…

PCIM 2019: Spotlight on the Major Technical Trends in Power Electronics

PCIM Europe — the leading international exhibition and conference for power electronics and intelligent motion — will be held at the fairground in Nuremberg, Germany, May 7–9 At PCIM Europe, market leaders and specialized companies will be showcasing their products and components. Among other things, trade visitors can look forward to innovations in power semiconductors…

DC/DC Converter Considerations for Smart Lighting Designs

Many lighting applications require LED backlight driver solutions that offer direct current control, high efficiency, pulse-width modulation (PWM) dimming, voltage protection, and design simplicity. Driver topologies are available in three main categories: linear regulators, charge pumps, and switching. DC/DC converters, based on a range of topologies that guarantee high efficiency, have found design slots in…

Infineon Raises the Power Efficiency Ante with CoolGaN

Power semiconductor giant Infineon Technologies has been on a mission for several years to integrate each of today’s cutting-edge silicon technologies with a broad-bandgap counterpart. Its new CoolGaN enhanced-mode (e-mode) gallium-nitride (GaN) technology is a follow-on to the CoolSiC silicon carbide (SiC)-based technology already on the market. Together, CoolGaN and CoolSiC devices complement the superjunction…