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TI's new 28-V, 500-mA step-down converter provides highest efficiency at light loads

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  Published in Science and Technology on Wednesday, October 24th 2012 at 7:30 GMT by Market Wire
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TI's new 28-V, 500-mA step-down converter provides highest efficiency at light loads -- DALLAS, Oct. 24, 2012 /PRNewswire/ --

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DALLAS, Oct. 24, 2012 /PRNewswire/ -- Texas Instruments Incorporated (TI) (NASDAQ: [ TXN ]) today introduced a synchronous, [ 28-V, 500-mA step-down DC/DC converter ] that can operate at less than 5 uA during "sleep" mode. The new TPS62175 maintains high efficiency during light load operation, while supporting ultra-low power microcontrollers that operate in 12-V, 15-V and 24-V applications, such as [ industrial sensor ], [ smart meter ], [ medical ] and [ wireless power transmission ] designs. For samples, WEBENCH® design tool and evaluation module, visit: [ www.ti.com/tps62175-pr ].

Key features and benefits of TPS62175:

• Highest efficiency at light loads: Achieves greater than 70-percent efficiency at 100 uA; operates with less than 5-uA quiescent current in sleep mode and 20 uA typically in regular mode.
• Supports microcontroller systems with extreme standby power requirements and output voltage accuracy: Supports TI's [ Stellaris® ARM® Cortex™-M4F ] series of microcontrollers.
• Smallest solution: Requires only three cost-efficient external components; and comes in a tiny 2-mm by 3-mm WSON package with a 68-mm² total solution size.  

DCS-Control technology

The TPS62175 features TI's patented [ DCS-Control regulation topology ], which combines hysteretic and voltage-mode control in a single device, resulting in excellent AC line and transient load regulation. DCS-Control also provides DC accuracy through a voltage feedback loop, and creates a seamless transition between high- and light-load (power save) operation.

Availability and pricing

The TPS62175 comes in a 10-pin, 2-mm by 3-mm WSON package and is priced at US$0.95 in 1,000-unit quantities. Designers can order the [ TPS62175EVM-098 ] evaluation module to test the device's operation and functionality when converting from 4.75 V to 28 V to a regulated 3.3-V output voltage.

Find out more about TI's power portfolio by visiting the below links:

• Check out additional step-down [ DC/DC converters with DCS-Control topology ], including the 1-A, 17-V [ TPS62160 ] device; the 3-A, 17-V [ TPS62130 ] step-down converter; and the 300-mA, 17-V [ TPS62125 ] with an adjustable enable threshold and hysteresis. For non-synchronous operation, the [ TPS54040 ] supports an output current of 500 mA and input voltages up to 42 V.
• Download the application note [ "How to Measure the Control Loop of DCS-Control Devices." ]
• Ask questions, help solve problems in the Power Forum in the TI E2E™ Community: [ www.ti.com/powerforum-pr ].
• Download TI's Power Management Guide: [ www.ti.com/powerguide-pr ].
• Access TI's PowerLab™ Power Management Reference Design Library: [ www.ti.com/powerlab-pr ].

About Texas Instruments

Texas Instruments semiconductor innovations help 90,000 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

WEBENCH, Stellaris, PowerLab, DCS-Control and TI E2E are trademarks of Texas Instruments. All registered trademarks and other trademarks belong to their respective owners.

SOURCE Texas Instruments Incorporated