Here’s how a 3D EM simulation can be used to accurately gauge gate-driver trace inductance. JOHN RICE | TEXAS INSTRUMENTS INC. HIGH ELECTRON MOBILITY TRANSISTORS (HEMTS) were first introduced in the early 1980s and are touted for their exceptional switching qualities. These so-called heterojunction, field effect transistors (FETs) were originally developed for high-frequency RF power […]
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Gallery: Scenes from Texas Instruments’
power supply design seminar
Chip maker Texas Instruments has been touring the country with its one-day seminar covering topics in power supply design. A demo room is part of the proceedings. We stopped by at the Cleveland, Ohio seminar to take a look. Here are a few of the more interesting circuits and displays we found set up there. […]
A better way to squelch transients
Modern dc-dc converters can double as compact transient suppressors in vehicular electrical systems characterized by a lot of hash on the battery power lines. By TIMOTHY HEGARTY, Non-isolated Power Solutions, Texas Instruments, Inc. THE proliferation of electronic subsystems in vehicles has created a need for small, inexpensive and highly reliable electronics able to operate in […]
How to select input capacitors for a buck converter
by Maniing Xie, System Application Engineer, Power Design Systems, Texas Instruments Electromagnetic interference (EMI) can create serious issues for manufacturers in an industrial environment. A buck converter generates a pulsating ripple current with high di/dt at the input. Without input capacitors, ripple current is supplied by the upper power source. Printed circuit board (PCB) resistance […]
Video teardown: Inside the Fitbit Charge
We recently took a close look at a Fitbit, made possible after our recent acquisition of a PC-based microscope for examining tiny stampings of part numbers on super-small ICs. Lots of interesting hardware here: The watch uses two accelerometers and two different processors. The one disappointing aspect of the analysis was that we couldn’t really […]
12-V, 10-A, 10-MHz dc/dc converter
has super-high power density
A new dc/dc converter is said to be the industry’s first 12-V, 10-A, 10-MHz series-capacitor buck converter to provide more than 50 A/cm3 in current density, four times higher than any other 12-V power management component or system. Developed by Texas Instruments, the TPS54A20 SWIFT synchronous dc/dc converter uses a special topology to operate at […]
Ceramic or electrolytic output capacitors in DC/DC converters – Why not both?
By Michael Score, Texas Instruments Switching power supplies are used in almost every end-equipment that needs a long battery life, low heat generation, or to meet ENERGY STAR® guidelines. When designing a switching power supply, it is difficult to decide which output capacitor type to use. Electrolytic capacitors have high equivalent series resistance (ESR), making […]
Transimpedance Amplifier: Which power chain
should I consider to maximize performance?
The behavior of a transimpedance amplifier relates directly to the performance of its power supply. Here a low-dropout design with a high power-supply-rejection-ratio can help. Xavier Ramus, Product definer, Linear Regulator and Supervisors group Texas Instruments Inc. Transimpedance amplifiers (TIA) are used in many applications, from automotive collision avoidance light detection and ranging (LIDAR) systems […]
MCUs with higher speeds, larger memory and lower power
The new Tiva C series TM4C123x ARM is the first Cortex-M-based MCUs to be built on 65 nanometer technology, setting the roadmap to higher speeds, larger memory and lower power. Use in home, building and industrial automation applications. The TM4C123x (formerly Stellaris LM4 MCUs) are built upon the TivaWare software development environment to ensure easy […]
How low can you go with power?
Answering the question, “How low can you go with power?” Texas Instruments Incorporated (TI) (NASDAQ: TXN) introduces the industry’s lowest power DC/DC step-down converter, which increases the amount of harvested energy an end application can use as much as 70 percent over alternative devices. The ultra-low power circuit enables battery-free power to applications, such as […]
