Product category:
DC/DC Convertors
News Release from: Texas Instruments (April 2006-) | Subject: TPS54283, TPS54286, TPS54383 and TPS54386
Edited by the Electronicstalk Editorial
Team on 02 November 2007
Convertors cut consumer design costs
Simple-to-design switchers speed time to market, reduce external component count and help reduce cost for point-of-load systems in consumer electronic systems.
Four new dual-output Swift DC/DC step-down convertors with integrated FETs deliver 2 and 3A of continuous output current and support input voltages of 4.5 to 28V The simple-to-design switchers, which come in a monolithic package, speed time to market, reduce external component count and help reduce cost for point-of-load systems used in a wide variety of applications including HDTVs, set-top boxes and other consumer electronic systems
This article was originally published on Electronicstalk on 4 Apr 2006 at 8.00am (UK)
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TI's new 2A TPS54283 and TPS54286 and 3A TPS54383 and TPS54386 Swift convertors reduce input capacitance by switching each output at 180 degrees out-of-phase at a frequency of 300 and 600kHz.
Each device features current mode control and integrates the compensation components to lower the total number of required external parts.
A unique sequencing pin helps designers meet critical sequencing requirements without additional circuitry by allowing the user to select which output ramps up first or to program both outputs to ramp ratio-metrically.
TI's new dual-channel nonsynchronous convertors provide high efficiency and 1.5% output voltage accuracy (down to 0.8 V) for each output.
With three selectable levels of overcurrent protection, low on-resistance and a thermal shutdown of 145C, the devices excel in hot environments where good thermal performance is needed, such as a DLP high-definition digital TV that operates without the use of a cooling fan.
Designers who use the Swift convertors can take advantage of interactive software and other design resources.
The SwitcherPro software tool is available free through the TI website.
The interactive tool includes a bill of materials, reference schematic, loop response graphs and an efficiency curve based on the designer's input.
All four Swift convertors are available in volume production from TI and its authorised distributors.
Each device comes in a highly reliable, thermally enhanced 5 x 6mm, 14-pin HTTSOP package.
Suggested resale pricing in 1000-unit quantities is US $3.20 each for the TPS54283 and TPS54286 convertors and $3.40 each for the TPS54383 and TPS54386 devices.
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