Product category:
Power Supply ICs and Controllers
News Release from: Texas Instruments (April 2001-March 2006) | Subject: TPS54910
Edited by the Electronicstalk Editorial
Team on 04 April 2002
Convertor takes MOSFETs on chip for
higher density
A new high-performance synchronous-buck DC/DC convertor enables designers to quickly and easily develop a power supply for point-of-load applications.
A new high-performance synchronous-buck DC/DC convertor enables designers to quickly and easily develop a power supply for point-of-load applications The new synchronous DC/DC convertor from Texas Instruments with internal 12A peak mosfets is capable of supplying greater than 9A of continuous output current over the entire operating temperature range and functioning over a 3.0 to 3.6V input voltage range
This article was originally published on Electronicstalk on 8 Nov 2004 at 8.00am (UK)
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By integrating synchronous-buck power mosfets with control circuitry in a small 28-pin HTSSOP package, the device can provide more than 9A continuous output current with less than 4.5cm2 of board space.
The TPS54910 Swift (switcher with integrated FET technology) DC/DC convertor is well suited for powering point-of-load DSP, FPGA and microcontroller applications, networking and optical communications systems, and low voltage, high density distributed power systems off a 3.3V bus.
The device saves development effort not only with the integration of power mosfets, but also with an interactive software development tool that speeds system level designers and veteran power supply designers through the entire external component selection process.
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The software provides a bill of materials, reference schematic, loop response graphs and an efficiency curve based on the designer's inputs.
External inductors and capacitors are chosen from the tool's database of components (users can also add their favorite components to the database).
"As processor core voltages drop, the 3.3V bus is becoming more popular at higher current levels", said Rich Nowakowski, product marketing manager, TI Power Management Products.
"TI's high-performance TPS54910 Swift DC/DC convertor will make designing point-of-load power supplies from the 3.3V bus easier, faster and smaller".
The TPS54910 offers high output current while providing integrated protection features, such as power good, overcurrent protection, thermal shutdown and undervoltage lockout.
An integrated synchronous rectifier and a low 15mohm on-resistance of the power mosfets enable the device to achieve efficiencies greater than 95%.
To address an application's switching noise sensitivity, the switching frequency can be one of two preset values or adjusted anywhere between the range of 280 to 700kHz.
Additionally, exceptional heat transfer resulting from TI's PowerPAD package enables up to three times the thermal performance of other packaging without the need for bulky heatsinks.
In addition to the TPS54910, other fixed or adjustable output voltage versions of the Swift family of DC/DC convertors are available with 2.0% total accuracy.
The Swift software development tool is available for free and can be downloaded from TI's power management website power.ti.com/swift.
To further help system developers with designing power supply solutions, TI offers evaluation modules, reference designs and other support collateral to reduce the power management design burden.
Samples of the TPS54910 are available now with volume production planned for May.
The device is packaged in 28-pin PowerPAD thin shrink small outline package (6.4 x 9.7mm) for thermal enhancement and space savings.
Suggested resale pricing is $5.69 each in quantities of 1000.
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