A Simple Latching Watchdog Timer
Apr 1, 2007
Most watchdog-timer ICs produce a single limited-duration output pulse when the watchdog timeout expires. Some applications, however, require the output to latch. This simple circuit provides a latched failure indication in response to a loss of the input pulse stream....
Voltage Regulators Rev Up PWM-Based Fan Control
Nov 1, 2006
The simplest of fan-control schemes an on-off switch is simple but inefficient, because it provides more cooling than necessary most of the time. When...
Data Centers Will Test Digital Power's Mettle
Oct 1, 2006
As digital power technology continues to develop, the industry continues to debate and discuss how, why and where the technology will have its greatest impact....
Motor Technology Upgrades Cooling Fans
Aug 1, 2006
A novel motor design and driver IC reduce Hall sensor requirements, enabling use of high-efficiency 3-phase brushless dc fans in laptops and other low-cost products....
Designing Battery Packs for Thermal Extremes
Jul 1, 2006
While battery packs enable individual cell capacities to be scaled in series/parallel configurations to suit portable applications, they must also provide thermal management in extreme environments....
Why Is My DC-DC Converter Too Hot?
Jun 1, 2006
The bulleted items on the front page of a dc-dc power module's data sheet often highlight electrical performance that the product cannot actually deliver...
Data Points
May 1, 2006
Microsite Turns Spotlight on Digital Power For engineers interested in the emerging area of digital power-supply design, a new microsite offers a unique...
Closed-Loop Control Benefits AC Motors
Jun 1, 2005
Feedback control methods implemented using
low-cost microprocessors enable significant
gains for single-phase ac motor speed controls....
Package Development Goes with the (Air) Flow
Nov 1, 2004
With the pace of improvements in silicon slowing, power MOSFET manufacturers continue to focus their attention on device packaging. Engineers attending...
Cooling Trends Direct Efficient Thermal Design
Jun 1, 2002
Cooling solutions such as heatsinks, fans, heat spreaders, and thermal gap fillers help keep temperatures within the specified limits, ensuring efficient operation of power electronics systems....
