High-Voltage TMBS Diodes Challenge Planar Schottkys
Oct 1, 2006
Trench MOS barrier Schottky diodes combine low VF and high-speed switching with improved protection from voltage transients, enabling the benefits of conventional planar Schottkys in 100-V and 120-V applications....
Driving Automotive Power Supplies to Higher Frequencies
Sep 1, 2006
If protected against load dumps and other transients, switching regulators with relatively low voltage ratings can be configured to operate efficiently at high switching frequencies....
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....
Protecting Flybacks Against Short Circuits
Aug 1, 2006
Delays in short-circuit protection triggers require careful selection of the magnectics and overcurrent threshold values to prevent component stress....
Motor Technology Upgrades Cooling Fans
Aug 1, 2006
A novel motor design and driver IC reduce Hall sensor requirements, enabling use of high-efficiency 3-phase brushless dc fans in laptops and other low-cost products....
Calculating Essential Charge-Pump Parameters
Jul 1, 2006
Analysis of a basic charge-pump yields a model that accurately preducts performance under a range of operating conditions, while illustrating a general approach to modeling other power-supply circuits....
Sensorless Motor Control Simplifies Washer Drives
Jun 1, 2006
Washing controls have used power inverters to control motor speeds for years. Variable-speed control enables a significant simplification of the mechanical...
Discrete Components Enable Bold PoE Solutions
Jun 1, 2006
Thanks to IEEE 802.3af, Ethernet data transmission lines may now conduct a specified amount of power. Enabling PoE brings a variety of advantages and...
Buck-Converter Design Demystified
Jun 1, 2006
Stepdown (buck) switching converters are integral to modern electronics. They can convert a voltage source (typically 8 V to 25 V) into a lower regulated...
Why Is My DC-DC Converter Too Hot?
Jun 1, 2006
The bulleted items on the front page of a dc-dc power module's data sheet often highlight electrical performance that the product cannot actually deliver...
Data Points
Jun 1, 2006
PoE Controller Integrates PD Designs Silicon Laboratories' Si3400 is described as the industry's most highly integrated, IEEE-802.3af-compliant, power...
High-Side Current Amplifier Forms 28-V Circuit Breaker
Jun 1, 2006
The latching-comparator output (COUT1) on the MAX4373, a high-side current amplifier with comparator and voltage reference, makes possible a circuit-breaker...
New Products
Jun 1, 2006
Web-Based Simulator Microchip Technology's Mindi is a web-based simulation tool that aids in the design of several circuits useful for power-management...
Data Points
May 1, 2006
Microsite Turns Spotlight on Digital Power For engineers interested in the emerging area of digital power-supply design, a new microsite offers a unique...
Topology Selection by the Numbers Part Three
May 1, 2006
In parts one and two of this article series, the component stress factor (CSF) method was defined and some examples of how to use it were given, concentrating...
