Here we go again - battery life blues Power DesignLine Blog 3/10/2006 Post a comment Microsoft and Intel et al have combined to introduce the ultra-mobile PC with a 7-inch screen, lots of capabilities and a stuck to a wall-wart blues battery life. What can engineers do to improve it?
1-watt DC/DCs feature 6 kV isolation Product News 3/10/2006 Post a comment MicroPower Direct's A100EHI series of 1-watt miniature DC/DC converters, an extension to the company's Budget Saver products, provides an input-to-output isolation of 6 kV for the special demands of industrial process systems, medical equipment and instrumentation, data processing equipment, robotic systems and board level power distribution subsystems.
How to cut size, cost without compromising performance, reliability in high-availability power systems Design How-To 3/9/2006 Post a comment The conventional approach to providing high availability in a high power AC/DC power system is to duplicate power supplies on each of two independent AC or DC feeds. That means duplication because it's a proven architecture. An alternative approach is based on using an AC transfer switch. At first sight, this may seem an obvious approach, but the technical challenges of implementing a switch that is fast enough and of sufficient reliability is the challenge. Here's how it can be implemented.
Current monitor handles short circuits Product News 3/7/2006 Post a comment With its wide common mode sense range of zero to within 2 volts of the supply voltage applied, this current monitor from Zetex Semiconductors is said to enable true short circuit current monitoring.
Supercaps gear up for automotives Product News 3/7/2006 Post a comment Maxwell Technologies' newest BOOSTCAP ultracapacitor cells and multi-cell modules, 16 new products in all as part of the company's 'Power' product line, are specifically designed for the most demanding automotive and transportation applications.
How a constant on-time voltage regulator reduces ripple Design How-To 3/6/2006 Post a comment One of the biggest disadvantages of the hysteretic design is the very large variation in switching frequency that is observed as the input voltage varies. Here is an attempt to improve this situation with constant on-time control. Find out how a constant-on-time based regulator design is capable of delivering low output ripple while still maintaining much of the original simplicity.
Environmentally sealed power modules exhibit at CTIA show News & Analysis 3/6/2006 Post a comment Transistor Devices will be exhibiting its environmentally sealed power modules, remote power vaults and water cooled cabinets at the CTIA Wireless show this April 5 to 7. The outdoor enclosures provide DC plant power and battery back-up for communications networks.
Demystify power gating and stop leakage cold Design How-To 3/3/2006 Post a comment Every designer of electronics feels the pressure to develop with an eye toward managing power. But leakage in nanometer geometries adds another level of complexity to these designs. What can be done? Here's a technique called power gating that addresses these challenges. Get the insight you need to demystify any apprehensions about its implementation.
Blog Make a Frequency Plan Tom Burke 17 comments When designing a printed circuit board, you should develop a frequency plan, something that can be easily overlooked. A frequency plan should be one of your first steps ...