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DC/DC Converter achieves greater than 70% efficiency at 100 µA.

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November 8, 2012 - Supplied in 10-pin, 2 x 3 mm WSON package, TPS62175 synchronous, 28 V, 500 mA, step-down converter supports MCUs that operate in 12, 15, and 24 V applications. DCS-Control™ regulation topology, combining hysteretic and voltage-mode control to optimize AC line and transient load regulation, also provides DC accuracy through voltage feedback loop. Converter operates with less than 5 µA quiescent current in sleep mode and 20 µA typ in regular mode.

TI's New 28-V, 500-mA Step-Down Converter Provides Highest Efficiency at Light Loads

(Archive News Story - Products mentioned in this Archive News Story may or may not be available from the manufacturer.)

Texas Instruments, Inc. (TI)
12500 TI Blvd.
Dallas, TX, 75243-4136

Press release date: October 24, 2012

Simple-to-use regulator with DCS-Control(TM) supports 12-V, 15-V and 24-V point-of-load applications, such as sensors and smart meters

DALLAS -- 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:

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(TM)-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-mm(2) 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(TM) Community:
--  Download TI's Power Management Guide:
--  Access TI's PowerLab(TM) Power Management Reference Design Library:

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

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