Democratic Current Sharing Aids Redundancy
Mar 1, 2005
Redundant power-conversion designs using multiple converters often require current sharing to both distribute the losses and maintain voltage regulation...
Easy Calculation Yields Load Transient Response
Feb 1, 2005
Many electronic circuits can rapidly shift between a sleep state and full load operation, placing a heavy requirement on the power converter to stabilize its output voltage. An excessive voltage variation could cause the electronics to malfunction, reset, latch up or fail....
Continuous Tracking Challenges DC-DC Converters
Feb 1, 2005
Typically, dc-dc converters are designed for use at a fixed output voltage. Some applications, such as dual data rate memory bus and other high-speed logic bus terminations, require the output voltage to be a fixed percentage of an external variable voltage source....
Buck Converter Losses Under the Microscope
Feb 1, 2005
The synchronous buck converter is the most popular topology in the PC market. The race between the top MOSFET companies is heating up with the rush to design new devices that are faster and better suited to meet the demands of the microprocessor makers....
Controller Expands Power Management Capabilities
Jan 1, 2005
Voltage sequencing, tracking and margining are becoming popular features in dc-dc converter modules, but these functions are less commonly found in dc-dc...
IC Supports Primary-Side Power Monitoring
Jan 1, 2005
In mission-critical applications with isolated
dc-dc converters, monitoring conditions on the
48-V power bus can significantly improve system
performance by detecting latent faults before
they cause system outages....
Passive Current Sharing Boosts Power and Reliability
Jan 1, 2005
Passive current sharing is a method of paralleling the outputs of two or more power supplies or dc-dc converters so that they share the load near equally....
High-Density Power Package for the PC Market
Nov 1, 2004
The very high current demands of modern PCs have placed pressures on dc-dc converter design engineers to come up with solutions that meet ever-increasing...
MOSFET is Thermally Enhanced for DC-DC
Nov 1, 2004
The SO-8 has been the most popular package type used for power MOSFETs in dc-dc converters for more than a decade. The package is well understood and...
Converter Synchronization Provides Design Flexibility
Nov 1, 2004
Designs often require synchronization of two power converters within the same piece of equipment. Doing this fixes the noise at a particular frequency...
Analysis of Closed-Loop DC-DC Converters
Oct 1, 2004
Engineering labs often have a network analyzer, but few of them include an injection transformer for closed-loop analysis of dc-dc converters. Agilent...
-48-V to 10-V Power Converter Using Push-Pull Topology
Oct 1, 2004
Distributed -48-V power systems often require a positive bias supply rail to power communications and system monitoring circuits. When input-to-output...
Testing High di/dt Converters
Sep 1, 2004
There is an increasing demand for point-of-load (POL) converters that maintain good regulation in the presence of fast load transients (di/dt). For example,...
Capacitor Ripple Current Improvements
Aug 1, 2004
The multiphase buck regulator topology allows a reduction in the size of the input and output capacitors versus single-phase designs. By quantifying the input and output currents, designers
can determine the requirements for the input and output capacitors....
Managing Multiple Supply Voltages
Aug 1, 2004
For most electronic systems, monitoring system voltages with a power-on reset (POR) ensures proper initialization at power up. Furthermore, detecting...
