Power electronics is a specialized branch of electrical engineering that focuses on the conversion, control, and management of electric power using electronic devices. It involves the use of solid-state semiconductor devices to efficiently process high voltages and currents for various applications. Power electronics-based white papers serve as valuable resources to understand current technologies, challenges, and innovations in the power electronics industry. In this article, everything PE has listed some interesting white papers on power electronics that were trending on the website in 2024.
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GaN Thermal Analysis for High-Performance Systems
This whitepaper addresses Qorvo’s integrated approach to thermal design that leverages modeling, empirical measurements (including micro-Raman thermography), and finite element analysis (FEA) for high-performance microwave GaN HEMT devices and MMICs. This methodology is highly effective and has been empirically validated. By properly addressing FEA boundary condition assumptions and the limitations of infrared microscopy, resulting model calculations are more accurate at both the product and end application level than traditional methods based on lower power density technology. Read more.
Efficiency Evaluation and Loss Analysis of a 300 W Isolated DC-DC Converter
This whitepaper from Toshiba discusses the investigation into secondary-side MOSFET characteristics to enhance efficiency in power electronics. It details the methodology of direct measurements using an evaluation circuit and compares these findings with precise simulations to identify primary sources of losses. Read more.
Oxidation Risk and Impact on Bourns Iron-based Power Inductors
This whitepaper explores Bourns' advancements in inductor technology, focusing on material development and manufacturing processes. It explains the surface oxidation phenomenon in power inductor products made with iron elements, emphasizing that it's purely cosmetic and doesn't affect performance or quality. The paper categorizes Bourns' power inductor products into powder-based and ceramic types, delving into material characteristics, manufacturing processes, and oxidation risks associated with each category. Read more.
Designing Onboard Chargers for High Performance and Power Density
This whitepaper from Monolithic Power Systems analyzes the rapid growth of electric vehicles (EVs) globally, driven by incentives and advancements in technology. It highlights the significant increase in electrified vehicle sales in 2023, the expanding range capabilities of EVs, and the ongoing efforts of vehicle manufacturers towards carbon neutrality. Read more.
Using PoE Powered Devices with a Local Power Supply
This white paper from Kinetic Technologies describes the methodology for applying a local power source to PoE devices that incorporate Kinetic Technologies’ integrated PD components. This document applies to the entire AS11xx PD family, even though some diagrams may demonstrate concepts using specific Kinetic components. The Kinetic Technologies PD family includes the AS1113, AS1114 and AS1138 devices. Read more.
Energy Storage Capacitor Technology Comparison and Selection
This white paper from Kyocera AVX compares various energy storage capacitor technology. Tantalum, MLCC, and supercapacitor technologies are ideal for many energy storage applications because of their high capacitance capability. These capacitors have drastically different electrical and environmental responses that are sometimes not explicit on datasheets or require additional knowledge of the properties of materials used, to select the best solution for a given design. Read more.
High Voltage MLCCs for highly efficient power system
This white paper from Yageo discusses high-voltage MLCCs that have high reliability and excellent high-frequency characteristics. Yageo recently extended its high voltage (100V to 3000V rated voltage) MLCC range. It now covers both class I NPO and class II X7R with capacitance up to 2.2 microfarad and case sizes (inch) 0201 to 1812. By completing this range extension, Yageo becomes one of the top MLCC manufacturers to supply high-voltage MLCCs. Read more.
How To Drive DC Motors with Smart Power ICs
This white paper from STMicroelectronics discusses the use of smart power ICs in driving DC motors. There are many ways to control DC motors. Open-loop current control acts directly on torque and thus protects the electronics, the motor and the load. Open-loop variable voltage control makes sense if the motor and electronics are not overloaded when the motor stalls. Open-loop variable voltage control with a current limiting circuit constitutes the simplest way of varying speed. However, a closed-loop system is needed if precision is called for in selecting speeds. Read more.
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