TI quiets the noise with 1-A power converter

Texas Instruments Inc. has launched a new class of voltage regulators designed to deliver the industry's lowest-noise 1-A switching power supply without sacrificing efficiency and power performance.

The TPS54120, the first in TI's family of QuietSupply regulators, reduces switching noise by up to 99 percent, compared to other power conversion devices, and helps maximize the performance of precision data converters and amplifiers and sensitive clock distribution circuits used in applications, such as telecommunications, test equipment, and high-end audio and video equipment, according to TI.

Key highlights:

• 99-percent noise reduction: 9 uVRMS at 100 Hz to 100 kHz, and 17 uVRMS at 100 Hz to 1 MHz
• Performance: High power supply rejection ratio (PSRR) of 83 db at 10 kHz, 70 dB at 100 kHz
• Design flexibility: Synchronizable to external clock from 200 kHz to 1.2 MHz
• Wide input voltage range of 4.5 V to 17 V, adjustable output of  0.8 V to 6.0 V

Pricing: Suggested resale price of $1.95 each in 1,000-unit quantities.

Availability: In volume now from TI and its authorized distributors in a thermally enhanced 3.5-mm x 5.5-mm, 24-pin QFN package.

Datasheet: Click here.