New Industry Products

5.5-V DC-DC Step-Down Power Module Delivers 6 Amps

May 07, 2018 by Paul Shepard

Texas Instruments (TI) today introduced a 5.5-V step-down power module that delivers true, continuous 6-A output current with up to 95 percent efficiency. The input voltage range of 2.4 to 5.5 V enables operation from typical 3.3-V or 5-V interface supplies as well as from backup circuits dropping down as low as 2.4 V.

The output current is up to 6 A continuously provided by two phases of 3 A each, which run out-of-phase, reducing pulse current noise significantly.

The easy-to-use TPSM82480 dc-dc module integrates power MOSFETs and shielded inductors into a tiny, low-profile footprint for space- and height-constrained applications such as point-of-load telecommunications, networking, and test and measurement power supplies.

TI's highly-integrated TPSM82480 maintains the required 6-A output current over the full temperature range without additional airflow. This is accomplished using a two-phase control topology that shares the load between the phases to ensure high efficiency and balanced operation.

Additional features include adjustable soft start, voltage select (VSEL) to support multiple processor stages, and a power-good indicator.

TPSM82480 key features and benefits:

  • Ultra-small size: Two input/output capacitors and two resistors make up a complete solution footprint of 80 mm2 that measures just 1.5 mm in height.
  • High efficiency: An optional automatic power-save mode maintains high efficiency across the full load range.
  • Heat protection: Thermal-good output to alert the system to reduce power before overheating.
  • Output Current: 6 A
  • Feedback Voltage Accuracy: ±1%
  • Input Voltage Range: 2.4 to 5.5 V
  • Output Voltage Range: 0.6 to 5.5 V

Availability, packaging and pricing

Prototype samples of the TPSM82480 are available now through the TI store. Offered in a 24-pin quad flat micro (QFM) MicroSIP™ package, the module is priced at US$3.57 in 1,000-unit quantities.