Product category: Power Supply ICs and Controllers
News Release from: Texas Instruments (April 2001-March 2006) | Subject: TPS4000x
Edited by the Electronicstalk Editorial Team on 12 June 2002
Predictive drive boosts controller efficiency
Texas Instruments has developed a novel family of low-voltage pulsewidth-modulated (PWM) synchronous DC/DC controllers
Texas Instruments has a new family of low-voltage pulsewidth-modulated (PWM) synchronous DC/DC controllers. Featuring a state-of-the-art combination of space savings, low input and output voltages and power efficiency, the new devices are the first in a series of controllers for use by DSP and microprocessor cores, supervisory circuits, ASICs, FPGAs and other low-voltage logic in advanced systems.
This article was originally published on Electronicstalk on 12 June 2002 at 8.00am (UK)
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TI's new TPS4000x PWM synchronous step-down DC/DC controllers feature patented Predictive Gate Drive technology and achieve overall converter efficiencies greater than 95%.
Predictive Gate Drive technology is designed to provide the highest efficiency in rectifier control by driving mosfet power transistors at 2 to 4% greater efficiency than conventional adaptive gate drive technology.
Two internally fixed operating frequencies are available, at 300 and 600kHz, as well as source and source/sink options.
A programmable closed-loop soft start, short circuit disable and thermal shutdown provide protection for system circuitry.
Available in a small-form-factor 10-pin MSOP PowerPad package with thermal protection, the devices supply output voltages down to 0.7V with a precision reference of 1%.
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The TPS4000x controllers step down input voltages ranging from 2.25 to 5.5V and are capable of driving both upper and lower N-channel mosfet output transistors, providing flexibility and efficiency for power supply design.
'The TPS4000x controllers are the first releases in TI's new TPS40k series of state-of-the-art DC-to-DC controllers', said Steve Goacher, marketing manager.
'We have a roadmap of follow-on devices that will combine an increased level of cost and power efficiency with design flexibility to meet the demands of next-generation telecommunication and high-end computer equipment'.
The TPS4000x controllers offer a mix of features for power supply design in a wide range of complex systems, including data servers, wireless base stations, networking, computer, and telecommunications.
Low-voltage inputs down to 2.25V and outputs down to 0.7V support the latest system designs and provide for future circuit voltage requirements.
A low-pin count package simplifies manufacturing and saves board space, while integrated features reduce system component counts.
TI's TPS4000x DC/DC controllers are available now from TI and its authorised distributors.
Evaluation modules and reference designs are available now from TI and a design software tool, which speeds novice and veteran power supply designers through the entire external component selection process, will be available in third quarter.
The TPS4000x controllers are packaged in a 10-pin PowerPad medium-scale outline package (MSOP).
Suggested resale pricing is $1.44 each in quantities of 10,000.
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