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Texas Instruments 15-A and 25-A SWIFT™ step-down regulators deliver highest power density, efficiency in smallest package

Easy-to-use, 25-A converter integrates NexFET™ technology, is up to five percent more efficient and switches more than 1.5x faster than other products


News provided by

Texas Instruments Incorporated

Mar 07, 2011, 09:00 ET

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FORT WORTH, Texas, March 7, 2011 /PRNewswire/ -- At the 2011 Applied Power Electronics Conference (APEC), Texas Instruments Incorporated (TI) (NYSE: TXN) today introduced the industry's smallest, most efficient step-down regulators with integrated FETs to support up to 25 A for telecommunications, networking and other applications. Come by TI's booth (#608) to see a live demonstration. For product details visit: www.ti.com/tps56221-pr.

The easy-to-use, 25-A, 14-V, TPS56221 synchronous SWIFT switcher with integrated NexFET MOSFETs achieves a power density greater than 200 W/in3 with greater than 90-percent efficiency at high loads from a 12-V input to a 1.3-V output, delivering up to 25 A of continuous output current at 500-kHz switching frequency. The new TPS56121 15-A, 14-V synchronous switcher is three percent more efficient at 5-V input to 1.2-V output and switches twice as fast as similar 15-A products in the market.

"Board-mounted power supplies are typically packed with circuitry and require greater power density and power efficiency - especially those systems operating at higher currents," said Sami Kiriaki, senior vice president of TI's Power Management business. "These two new products expand our SWIFT family into higher current applications and allow our customers to achieve breakthroughs in power density, efficiency and thermal management - and ultimately more energy-efficient and reliable end equipment."

The TPS56221 and TPS56121 come in a thermally enhanced 5-mm x 6-mm QFN package, and achieve a total solution size of 315 mm2 -- 30-percent smaller than other discrete solutions. Both devices are the first switchers to integrate TI's NexFET technology, providing increased thermal performance, protection, efficiency and reliability. The switchers offer three selectable frequencies of 300 kHz, 500 kHz and 1 MHz for design flexibility and support input voltages of 4.5 V to 14 V.

Key features and benefits of the TPS56221 and TPS56121:

  • High-current performance and efficiency: Provides greater than 90-percent efficiency at 25-A  and 15-A peak-load currents from an input voltage range from 4.5 V to 14 V
  • Small size and greater power density: Total solution size of 315 mm2 minimizes footprint, while achieving a power density greater than 200W/in3

NexFET Power Block supports multi-phase 50 A, 100 A and higher  

In addition to the high-current capabilities of SWIFT converters, TI's CSD86350Q5D NexFET Power Block, which was introduced last year, enables highly efficient, multi-phase point-of-load designs with higher current capability. The small, 5-mm x 6-mm stacked MOSFET, in a grounded, lead-frame SON package, supports frequencies up to 1.5 MHz, reduces thermal impedance and simplifies layout. The CSD86350Q5D can achieve greater than 90-percent efficiency at 25 A, and can be combined with TI's TPS40140 stackable controller to support multi-phase designs, scalable to 50 A, 100 A and higher – while maintaining high efficiency across the load.

Broad portfolio of step-down converters

TI provides the broadest range of step-down converters in the industry, including DC/DC converters with integrated FETs, TPS40K™ DC/DC controllers with external MOSFETs and fully integrated power solutions, such as the new TPS84620 with integrated inductor.

Availability and pricing

The TPS56221 and TPS56121 come in an easy-to-solder, 22-pin, 5-mm x 6-mm QFN package with a single PowerPad™ thermal pad. Samples and evaluation modules are expected at the end of March. Suggested resale pricing for the TPS56221 is $5.25 and the TPS56121 is $4.35 in 1,000-unit quantities.

Find out more about TI's power products and design tools:

  • Check out TI Live @ APEC to keep up with what TI is doing at APEC, including videos of demonstrations.
  • Pre-order TPS56221 and TPS6121 samples and order the TPS56221EVM-579 or TPS56121EVM-601 evaluation module: www.ti.com/tps56221-pr  
  • NexFET Power Block CSD86350Q5DEVM-604 evaluation module: www.ti.com/csd86350q5devm-pr
  • Power Stage Designer™ software design tool: www.ti.com/powerstagedesigner-pr
  • SWIFT DC/DC step-down converter portfolio: www.ti.com/swift-pr.
  • NexFET power MOSFETs portfolio: www.ti.com/mosfet-pr.  

About Texas Instruments

Texas Instruments semiconductor innovations help 80,000 customers unlock the possibilities of the world as it could be – smarter, safer, greener, healthier and more fun. Our commitment to building a better future is ingrained in everything we do – from the responsible manufacturing of our semiconductors, to caring for our employees, to giving back inside our communities. This is just the beginning of our story. Learn more at www.ti.com.

Trademarks

SWIFT, NexFET, TPS40K, PowerPad and Power Stage Designer are trademarks of Texas Instruments. All trademarks and registered trademarks are property of their respective owners.

TXN-P

SOURCE Texas Instruments Incorporated

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