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Featured Design Center |
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Pushing the limits of AC/DC power design for med apps
While it is clear that reductions in size and improvements in efficiency are constant pressures in the design of AC/DC power supplies, the medical device market has some particular requirements that make the challenge greater still. This article considers these challenges and looks at how recent AC/DC switching power supplies are being designed to meet them.
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Power Supplies
Model-driven development supports eco-friendly car design
The selection of a power source for a vehicle is simple is it? If the boundary conditions call for eco-friendliness and cost-effectiveness there are difficult trade-offs to consider.
How a Power Switch Can Save the World
Nearly all electronic products contain a switch-mode power subsystem. To improve efficiency and cost throughout the life cycle of an application, many topologies and control methods have been tried. The latest-generation of power switches have changed the landscape by allowing integration as well as exceeding the new energy efficiency regulations that are becoming mandatory in the industry.
Pushing the limits of AC/DC power system design to meet the demands of medical applications
While it is clear that reductions in size and improvements in efficiency are constant pressures in the design of AC/DC power supplies, the medical device market has some particular requirements that make the challenge greater still. This article considers these challenges and looks at how recent AC/DC switching power supplies are being designed to meet them.
See all Power Supplies »
Power Components
Buck converter: Key is selecting the right capacitor
While the buck converter's input capacitor is often the most critical capacitor in the circuit, it is not usually given the proper consideration.
SoC integrated power supply reduces system cost of ECU
Our SoC design for the automotive market integrates in a single silicon chip multi-core, SRAM, flash, and analog IP components, and even the power management system with a switch mode regulator that accurately detects low voltages to improve power consumption and lower system cost.
Motor efficiency depends on power-factor correction, too
Active power-factor correction is necessary for modern motors due to the highly non-linear load they would otherwise present to the ac mains.
See all Power Components »
UPS
Efficient architectures move sources closer to loads
Large IT data centers use as much power as 25,000 to 35,000 homes and unfortunately as much as half of that power is wasted, but moving more efficient power sources closer to the load can slash waste.
Standby and uninterruptible power supply tutorial - Part 2
There is a big difference between the performances of the standby backup supply and an on-line UPS. This two-part tutorial steps you through the differences and similarities. This is Part 2 and it describes and provides examples of power factor and why it's important to understand.
Standby and uninterruptible power supply tutorial - Part 1
There is a big difference between the performances of the standby backup supply and an on-line UPS. This two-part tutorial steps you through the differences and similarities. Part 1 describes what they are and how to select the appropriate one.
See all UPS »
Battery Management
Battery stack monitor extends life of Li-ion batteries in hybrid electric vehicles
The cost of running a car on electricity is equivalent to paying $0.75/gallon for gasoline, and if that electricity comes from carbon neutral sources, car owners are saving both money and the environment (gasoline combustion produces 9 kg of CO2 per gallon).
Book Excerpt: "Electrical Engineering 101" (Part 5 of 5)
This is not "EE for dummies"; it is a very useful review of basics you may have forgotten, or maybe missed.
Current and voltage measurement in and around hybrid and electric vehicles
HEV and electric drives require an in-car infrastructure that monitors currents, voltages, and battery status. In this context, two technical approaches are competing: Magnetic sensors and shunt modules. The articles compares these alternatives.
See all Battery Management »
New Power Plays
Clock mesh variation robustness: benefits and analysis
This article gives an overview and highlights the benefits of clock mesh technology compared to conventional clock tree methods.
Wirelessly Monitoring Temperature in Multiple Rooms for an Energy Efficient Home
Energy efficiency is a hot topic in today's energy crisis discussion. With recent technology advancements in energy efficient technologies, new ultra-low power microcontrollers (MCUs) are helping to reduce overall energy consumption while also creating a cost effective solution for wireless applications.
Comparison of xenon flash and high current LEDs for photo flash in camera phones; a review and update
This article provides new information updating an Oct 2006 study comparing light sources for camera phones. This new report includes data captured from higher resolution, 5-megapixel camera phones released in the last year, and also considers the technology advancements in camera sensors, xenon flash units, high power WLEDs and LED flash drivers.
See all New Power Plays »
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About the Power Management DesignLine How-To Section
Power Management DesignLine's How-To Section delivers detailed engineering articles focused on the design and development of power components, power sources, battery management devices/systems, and portable/mobile systems. Design topics covered in this category include micro fuel cells, buck/boost DC/DC converter, thermal management, uninterruptible power supplies (UPS), supercapacitors, ultracapacitors, DC/DC converters, AC/DC converters, LDO regulators, LED drivers, LCD drivers, PWM controllers, POL converters, solar energy, and more.
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