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

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

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Texas Instruments Incorporated

Oct 24, 2012, 10:07 ET

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

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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