Power Electronics

 

Here’s One Solution to Overcome Those MLCC Shortages

As many OEMs, plus tier 1 and tier 2 manufacturers will attest, the multi-layer ceramic capacitor (MLCC) industry is currently experiencing a significant capacity and supply issue. The last time we saw such shortages was around the turn of the millennium. Manufacturers are putting in capacity, but this takes time to feed through and presents […]

Read more >>> Here’s One Solution to Overcome Those MLCC Shortages

Kevin Anderson, senior analyst at IHS Markit, says the average number of advanced driver-assistance systems (ADAS) installed in vehicles, including blind-spot information, adaptive cruise control, lane-departure warning, rear automatic braking, and other features joining the now ubiquitous backup cameras, will grow from an average of 1.6 per vehicle today to 3.8 in 2023. ADAS automate, […]

Read more >>> Automotive Power Semiconductor Market Hits the Throttle

NASA is pursuing a program that integrates unmanned aircraft systems (UAS) into the National Airspace System, or UAS-NAS. This involves identifying, developing, and testing the technologies and procedures that will make it possible for UAS to have routine access to airspace occupied by human-piloted aircraft. Four NASA centers support the UAS-NAS project: NASA’s Ames Research Center […]

Read more >>> Unmanned NASA Aircraft Flies in Public Airspace Without a Chase Plane

The Microsystems Technology Office at DARPA is searching out for innovative proposals that enable revolutionary advances in robotic science, devices, or systems (see figure). Specifically excluded is research that primarily results in evolutionary improvements to the existing state of practice. The requested proposals will cover the following areas: Actuator materials and actuator mechanism development Integrated […]

Read more >>> DARPA Seeks Proposals for Revolutionary Advances in Mini-Robots

Wind power, as an alternative to burning fossil fuels, is plentiful, renewable, widely distributed, clean, produces no greenhouse gas emissions during operation, and uses little land. The net effects on the environment are far less problematic than those of nonrenewable power sources. Wind power is very consistent from year to year, but has significant variation […]

Read more >>> Power Management Chapter 16: Wind Power

Designers often need to measure and manage power consumption of low-voltage, high-power ICs such as FPGAs and GPUs to manage performance or anticipate problems. But this simple-sounding task has some implementation complexity and operational subtlety. The challenge is compounded when there’s also a need to know total energy use, which is a function of the […]

Read more >>> Chip Addresses IC Power-Measurement Challenge

The eCitaro, unveiled by Mercedes-Benz this year, is the company’s first all-electric production bus, an electric version of the company’s combustion-engine Citaro (Fig. 1). The eCitaro, expected to go on sale by the end of 2018, will be able to transport about 88 passengers, and will initially be a plug-in battery electric. Its batteries are modular, […]

Read more >>> This Bus Is Ready to Electrify Public Transit

Switching regulators for space-constrained systems require attention to electronics, mechanical design, and system manufacturing considerations. The electronics details are usually viewed as the primary design considerations, but the other two factors are also important. For example, mechanical and manufacturing considerations play an important role in the VQFN-packaged LMR33630 from Texas Instruments. (The LMR33630 is also […]

Read more >>> 36 V, 3 A Synchronous Converter Comes in a Small Package

With their low equivalent series resistance (ESR), which allows for good ripple-current handling as well as high surge-voltage ratings and self-healing properties, film capacitors are strong candidates for many power-conditioning duties in key applications like electric vehicles, renewable energy, and industrial drives. They’re especially suited to scenarios where no hold-up (or ride-through) is required, such […]

Read more >>> Selecting Film or Electrolytic Capacitors for Power-Conversion Circuits

In developed regions such as Europe and North America, integration of Internet of Things (IoT) technology in vehicles is expected to boost the adoption rate of vehicle-tracking systems. Such systems can be active or passive—they collect data in the same way and are equally accurate. The main difference between active and passive involves time. Active […]

Read more >>> Vehicle-Tracking Systems Demand Integrated Battery Power Management

Wide-bandgap (WBG) power semiconductors—and silicon-carbide (SiC) devices in particular—can help significantly improve the energy efficiency and reliability of various types of power converters. These include inverters for use cases such as electric vehicles, renewable-energy micro-generators, and data-center power supplies. Other widely used circuits, such as choppers, half-bridges, totem-pole PFC stages, and soft-switched dc-dc converters, can […]

Read more >>> Hybrid Cascodes Simplify SiC Adoption in Popular Power Circuits

HAPS is happening. UAVOS Inc.’s HAPS (High Altitude Pseudo Satellite) aircraft, being developed with a flexible wing for high-altitude unmanned flight, will provide unique opportunities for both civilian and defense areas, as well as for security tasks. Unmanned aerial vehicles (UAVs) powered by solar energy can serve for long continuous monitoring of the area of interest […]

Read more >>> Prototype Solar-Powered, High-Altitude UAV Undergoing Flight Tests

A photovoltaic cell converts light energy directly into electricity by the photovoltaic effect, which is a physical and chemical phenomenon. It is defined as a device whose electrical characteristics, such as current, voltage, or resistance, vary when exposed to light. Solar cells are the building blocks of photovoltaic modules, known as solar panels. Multiple solar […]

Read more >>> Power Management Chapter 15: Photovoltaic Systems

New in-wheel motor systems modify the hub of each electric-vehicle (EV) wheel by adding a complete drivetrain that supplies torque to its associated tire (Fig. 1). Also included with these in-wheel motor systems are braking components and the motor-drive electronics. Road tests will demonstrate in-wheel motor system performance and durability, which will ultimately impact EV […]

Read more >>> In-Wheel Motor Systems Will Propel EV Performance

December 2020 is the Date of Withdrawal (DoW) of the standards to supersede IEC 60065 and IEC 60950-1. The new standard is IEC 62368, which will replace 60065 (Audio/Video) and 60950 (IT) for external power supplies. IEC 62368-1 was published in Europe during the second half of 2014. Originally the DoW was June 2019, but […]

Read more >>> New External Power Supply Standards: 62368 to Replace 60950 and 60065 UPDATE

Thanks to advances in low power and energy efficiency, embedded systems and IoT devices no longer require access to ac current, meaning those platforms are suitable for remote applications. Wireless communication is becoming more prevalent in remote areas as well, opening the door to new operation possibilities like environmental sensor and telemetry applications, compiling weather […]

Read more >>> These 5 IoT Energy-Harvesting Options Stand Out “in the Field”

Today, most electric machines operate with radial flux (RF). Magnax offers a new concept, though—a machine that operates with axial flux (AF). Figure 1 provides a comparison of the RF and AF technologies. 1. Comparison of radial- and axial-flux machines. Magnax says the key to the high power density is its motors’ yokeless AF design with […]

Read more >>> Axial-Flux Motors and Generators Shrink Size, Weight

When forming lithium-ion cells in manufacturing, or when testing large quantities of cells for evaluation, it’s important to select your charging and discharging systems with the proper size for the task. In manufacturing, where you may be charging and discharging thousands of cells at a time, total power consumption and heat generation must be considered. […]

Read more >>> Fixture vs. Charger Design Tradeoffs when Charging Li-ion Cells

Scientists on both sides of the Atlantic Ocean are working on higher-efficiency perovskite-based solar cells. In the U.S., Solar-Tectic LLC (Briarcliff Manor, N.Y.) has produced silicon- and perovskite-based solar cells. Neuchâtel (located in Switzerland) scientists have done the same. Perovskite is a material with a unique crystal structure that has attracted attention in the solar-cell universe. […]

Read more >>> Scientists Use Silicon-Perovskite to Boost Solar-Cell Efficiency

The first planned assembly, test, and launch operations (ATLO) activities of the Mars 2020 mission will involve electrical integration of flight hardware into the descent stage. The Mars 2020 rover, as well as its cruise stage, aeroshell, and descent stage—a rocket-powered “sky crane” that will lower the rover to the planet’s surface—will undergo final assembly […]

Read more >>> Next NASA Mars Rover Reaches Key Manufacturing Milestone

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