Chips Simplify Driving of High-Brightness LEDs
Nov 1, 2006
A pair of LED drivers from Maxim Integrated Products provides highly compact and simplified designs for driving the high-brightness (HB) LEDs that are...
SPICE3 Enables Accurate Modeling of Complex ICs
Nov 1, 2006
The capabilities of SPICE3 permit the simulation
of circuits incorporating the latest ICs by way of
special algorithms and modeling techniques....
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...
DSCs Ease Migration to Digital Loop Control
Nov 1, 2006
Armed with high execution rates and power peripherals, digital signal controllers provide
the functionality needed in power-supply designs but don’t require DSP programming....
Product of the Year: Texas Instruments' TPS40140 Synchronous PWM Controller
Oct 1, 2006
This year's Power Electronics Technology Product of the Year award winner is an analog controller that simplifies the potentially complex task of paralleling voltage sources to create a scalable POL power designs....
Controllers Take On Complex Power Systems
Oct 1, 2006
Point-of-load (POL) power applications continue to inspire the development of more sophisticated power controllers with greater ability to manage power...
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....
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....
PFC Controller ICs Continue to Advance
Sep 1, 2006
Many regulatory agencies such as the Department of Energy and the California Energy Commission (CEC) have issued guidelines or mandates for power factor...
Modified Sine-Wave Inverter Enhanced
Aug 1, 2006
Altering the waveform produced by a modified sine-wave inverter reduces distortion products, while still permitting use of efficient switching techniques....
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...
Controller Generates Multi- and Single-Phase Outputs
Aug 1, 2006
The TPS40140 synchronous, PWM controller from Texas Instruments operates as a standalone device that generates two outputs, or as a two-channel, multiphase controller....
Gain Equalization Improves Flyback Performance
Jul 1, 2006
In a discontinuous flyback converter, the gain of the output current is a function of the control voltage. A constant gain can be provided by compensating circuitry, which improves control-loop stability....
Switching Chip Tames Power Peaks
Jul 1, 2006
A variable frequency switching regulator for ac-dc power supplies drives peak loads from a design optimized for lower continuous loads to enable compliance with efficiency mandates....
