The ac–dc power supply units providing isolated, regulated outputs operating above 100 W typically require some form of input active power factor correction (PFC) [1] . To achieve this, a popular solution is to combine a boost PFC input stage with an “LLC” converter which isolates and controls the dc output voltage. However, a new, innovative single-stage technique for … [Read more...] about A Proprietary ZVS-Based Approach Delivers High Efficiencies at Light Load With Half the Components of Conventional Designs
Power system measurements
Wide Bandgap-Based Power Electronics for Aerospace Applications
Aerospace applications are not new but potentially the final frontiers for power electronics research and developments. On the aviation side, because of the need for fuel saving and greenhouse gas reduction, more electric aircraft (MEA), unmanned aerial vehicles (UAVs), electric vertical take-off and landing (eVTOL) aircraft, and future hybrid and turbo electric propulsion call … [Read more...] about Wide Bandgap-Based Power Electronics for Aerospace Applications
Driven by Density, Efficiency at Low Cost, Power Integration Reaches New Heights
For decades, miniaturization has been the trend in the power supply world. Consumers have been demanding more functions from smaller systems with better performance and reliability at lower cost. Such advances are evident in today’s laptops, tablets, smartphones, industrial drives and a host of other consumer and industrial applications. To meet these demands, the power supply … [Read more...] about Driven by Density, Efficiency at Low Cost, Power Integration Reaches New Heights
Hardware Engineer’s Guide to a Brushless-DC Motor Controller
Brushless-dc (BLDC) motors have best-in-class torque to weight ratio, high efficiency, and effective control algorithms, which make them effective solutions in applications requiring high power density, such as cordless power and garden tools, unmanned aerial vehicles (UAV), robotics, and others. Improvements in semiconductor packaging technology, motor control algorithms, and … [Read more...] about Hardware Engineer’s Guide to a Brushless-DC Motor Controller
Meeting the Power and Magnetic Design Challenges of Ultra-Thin, High-Power Density 48 V DC-DC Converters for Ultra-Thin Computing Applications
Over the past decade computers, displays, smart phones and other consumer electronics systems have become thinner while also becoming more powerful. As a result, the market continues to increase its demand for thinner power supply solutions with greater power density. This article examines the feasibility of adopting various non-isolated dc-dc step-down topologies for an … [Read more...] about Meeting the Power and Magnetic Design Challenges of Ultra-Thin, High-Power Density 48 V DC-DC Converters for Ultra-Thin Computing Applications
