Current-Sense Amp Offers Four-Quadrant Operation
Feb 1, 2008
Many current-sensing ICs are available for applications that require single-quadrant operation, where positive common-mode voltages are present and current...
Power Chips Raise the Bar on Operating Voltage
Jan 1, 2008
Bringing higher-voltage capability to rectifiers, FET drivers, controllers and voltage regulators is one more way for semiconductor developers to help their customers achieve a more integrated power design...
Amplifier Senses Currents At Large Negative Voltages
Aug 1, 2007
In telecom and other systems with high-voltage negative
supply rails, a simple combination of an instrumentation
amplifier and discrete components enables high-side
current sensing for circuit protection....
Flybacks Charge Xenon Flash Capacitors
Mar 1, 2007
The popular Xenon photoflash bulb is typically driven by
a battery-powered high-voltge source. A flyback converter
based on peak current limiting is the best option for this
circuit in portable applications....
Thermal Issues Count in High-Power Amp Design
Jun 1, 2005
Designers can make sound decisions for
dissipating the heat by choosing devices,
heatsinks and circuits that will realize the
smallest, best-performing design....
Design Challenges in Backlighting LCD TVs
May 1, 2005
Designers of circuits for driving cold-cathode fluorescent lamps used to backlight LCD-TV sets must understand the various architectures available and the benefits and drawbacks
of each to optimize the design for cost and performance....
Reducing Wasted Startup Current in Offline Supplies
Aug 1, 2004
A switch-mode power supply (SMPS) offers a convenient and efficient way to reduce a large input voltage (the ac mains voltage) to power lower-voltage...
Ceramic Capacitors Aid High-Voltage Designs
May 1, 2004
Medium- and high-voltage capacitors find widespread use as snubbers or filters in applications, such as switching power supplies for audiovisual and business...
Tapped-Inductor Boost Converter Yields Dime-Size Supply
Apr 1, 2004
Designs evolve because someone thinks of a better way to do something or because the first great idea (and sometimes the second and third) just didn't...
Reliability Design Guide for High-Voltage Capacitors
Dec 1, 2003
This article clarifies misconception of high-voltage mica capacitors, thereby avoiding unnecessary derating and saving valuable space and volume....
High Voltage ICs Simplify Off-Line Supplies
Jun 1, 2001
Following up its earlier success with single chip, off-line supplies, Power Integrations has come up with the TinySwitch II, an upgraded version of their...
1700V IGBT Module Employs Non-Epitaxial PT chips, Low Inductance Package
Mar 1, 2001
While punch throughs are the preferred power device for a growing segment of industrial power conversion applications requiring operation from ac line voltages of 575Vac to 690Vac, historically, 1700V IGBTs based on a non punch through structure were popular....
