Copper Alloy Inductors Stabilize Current Sensing
Apr 1, 2008
For CPU VRM designs, a copper alloy features a more constant dc resistance over temperature than a traditional copper inductor, with little in the way of performance tradeoffs...
Expedite Transformer Calculations for Flybacks
Jan 1, 2008
When charging defibrillator capacitors, a novel approach can be used with confidence to come up with a more exacting design, eliminating the cumbersome aspects of many other approaches....
Selecting Inductors for Low-Power Buck Regulators
Nov 1, 2007
Designing a buck regulator for low-power, high-frequency operations demands special attention to inductor requirements and measurement of data that's not available on the data sheet....
Processed Power Inductors Shine at High Frequencies
Oct 1, 2007
As multimegahertz switching becomes common in dc-dc converters, processed inductors offer the advantages of smaller size and lower cost when compared with conventional wirewound components.
...
Ed Bloom: Lifetime Achievement Award Winner
Sep 1, 2007
A champion of power electronics education, Ed Bloom has devoted much of his career to spreading knowledge of practical power-supply design and unlocking the mysteries of magnetics. Though he's spent many of his 40-plus years doing power-supply design and consulting, he's best known throughout the industry as an instructor, author and innovator in magnetics design....
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....
A Guide to Designing Copper-Foil Inductors
Jul 1, 2007
Building magnetic components with copper foil windings
rather than round magnet wire offers thermal, electrical,
and mechanical advantages, but requires special design
considerations.
...
Bead Inductor Meets CPU Power Challenges
Apr 1, 2007
Ferrite-based power beads, an alternative to wound-toroid inductors, offer greater efficiency, tighter tolerances and smaller size in VCORE voltage regulators. ...
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....
Ferrite Out Better Core Materials For Your POL Design
Oct 1, 2006
The latest generation of powdered-iron and ferrite materials for inductor cores provide power designers with new options for increased efficiency or power density in dc-dc converters....
Control Method Solves Low Duty-Cycle Dilemmas
Sep 1, 2006
A variation on peak-current-mode control eliminates blanking
time during inductor current sensing, enabling shorter
on-times for the high-side FETs used in buck regulators....
Accurately Test Magnetics Carrying DC Bias Current
Sep 1, 2006
A new method of injecting dc current into power inductors
enables designers to avoid common pitfalls when measuring
these devices, thus minimizing measurement errors....
Bruce Carsten: Lifetime Achievement Award Winner
Sep 1, 2006
For his extensive record of innovation in the field of power electronics and for his contributions to the industry as an author and educator, Power Electronics Technology is proud to present Bruce Carsten with this year's Lifetime Achievement Award....
Shrinking Inductors Help Build Smaller Power Converters
Aug 1, 2006
A major reason for the migration to higher switching frequencies has been the need to reduce the size of the inductor required to complete a dc-dc converter design....
Slope Compensation for Mild Inductor Saturation
Aug 1, 2006
Peak current control has long been a popular PWM method in switching power supplies and has the equally well-known characteristic that when operating in continuous conduction mode...
