30kW AC-DC High Density Power Supply
May 12, 2009
Pioneer Magnetics introduced the PM37223-10P, a power factor corrected, 360V @ 30kW liquid-cooled AC-DC power supply with power density of 27.4w/in3 in a 2U 19" rack configuration....
AC-DC switcher offers variety of options
May 12, 2009
V-infinity has added a new line of 30 W Energy Star switching power supplies that can be transformed from a wall mount to a desktop by sliding off the blade and plugging in the AC power cord. ...
Eliminate the Guesswork in Selecting Crossover Frequency
Aug 1, 2008
Rather than arbitrarily choosing a converter’s crossover based on the switching frequency, you can analytically determine the relationship between its crossover and its undershoot in response to a load step...
SMPS Design Extends Universal Input to 690 Vac
Oct 1, 2007
A quasi-resonant flyback converter uses high-voltage emitter-switched bipolar transistors to achieve the wide inputvoltage range needed to power digital electric-energy meters in both residential and industrial applications.
...
Control Intelligence Improves Renewable Energy Efficiency
Sep 1, 2007
Building on the success of fixed-point architectures,
floating-point digital signal controllers enable
implementation of more complex control algorithms in
power inverters for solar- and wind-powered systems....
Forward-Converter Design Leverages Clever Magnetics
Aug 1, 2007
A synchronous rectified forward converter optimized
for performance and cost uses coupled inductors
for output filtering and transformer-based gate drive....
Better Power Packages Make Better Circuits
May 1, 2007
Advanced power packages are breaking barriers that affect
dc, ac and thermal performance in switch-mode power supply
circuits for a broad range of applications.
...
Radical Redesign Nears for Battery Chargers
Apr 1, 2007
As new markets for energy-efficient battery chargers
emerge, designers can take advantage of techniques
for testing and improving charger efficiency....
Control Technique Cuts Flyback Input Capacitance
Apr 1, 2007
For flyback power supplies that need long holdup times, a
technique called on-time extension maintains regulation
with less bulk input capacitance than would be required with conventional, fixed-frequency control....
Waveform Scanning Solves Power-Design Challenges
Mar 1, 2007
The comprehensive analysis of basic switch-mode powersupply
functions enabled by oscilloscope feature sets can
close the loop for power-supply development....
A Guide to Designing Gate-Drive Transformers
Jan 1, 2007
A step-by-step procedure optimizes the mechanical, thermal and electrical parameters of the transformers to suit switch-mode power-supply applications....
Energy Experts Weigh In On Conservation
Nov 1, 2006
Attendees at the recent Power Electronics Technology Conference in Long Beach, Calif., heard two compelling presentations on the subject of energy efficiency....
