Increase DC-DC Efficiency Across Load and Frequency
Feb 1, 2008
To help improve dc-dc conversion efficiency at lighter loads and higher switching frequencies, a Schottky diode can be integrated onto a MOSFET chip....
Multiphase Boost Converter Powers Car Audio Amp
Jan 1, 2008
Automotive audio amplifiers often use a boost converter to generate output voltages of 18 V to 28 V (or higher) from the battery...
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....
Determine Buck Converter Efficiency in PFM Mode
Sep 1, 2007
By analyzing the light-load efficiency of a synchronous
buck operating under pulse frequency modulation control,
designers can predict efficiency over the converter’s full load
range and maximize battery life in portable applications....
Digital Control Squeezes 40 A from Buck Converter
Aug 1, 2007
Using digital-loop control, a PWM controller minimizes
duty cycle to optimize efficiency of a single-phase
synchronous buck converter and boost current delivery....
Average Current Sensing Empowers Blower Motors
Jun 1, 2007
A new technique implemented in a sensorless motor controller chip performs carefully timed sampling of phase currents, giving excellent torque regulation in brushless dc-motors....
Compact Drivers Help LEDs Replace Halogens
May 22, 2007
Using a driver circuit based on a specialized buck controller, a white LED with integrated heatsink can replace a 10-W halogen bulb in MR16 lamps....
Tool Eases Modeling of Power MOSFETs
Mar 1, 2007
An online tool performs thermal simulation of vendor’s
MOSFETs with high accuracy, but is faster and easier
to use than programs based on finite-element analysis....
Integration Eases Portable Power Management
Jan 1, 2007
System-on-chip devices combining multiple regulators and other functions can simplify portable device designs, but require attention to power dissipation and signal routing issues....
Digital Power Control Enables System Identification
Nov 1, 2006
Despite obvious advantages over analog controllers, the limited power of today's digital controllers requires careful measuring techniques to accurately capture the real-time response of the control loop....
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....
Explore the Lesser-Known Benefits of Digital Power
Nov 1, 2006
Although the use of digital control eases implementation of the basic power management
requirements, it also affords numerous secondary benefits that can make POL power designs more compact, flexible and efficient....
Digital Control Measures In-System Response
Nov 1, 2006
Digital power solutions make it possible to measure power-stage frequency response in the application, opening the door to new capabilities such as auto-tuning, power-stage diagnosis
and on-the-fly adaptability....
