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TI's power converter touts noise reduction by 99%

Posted: 16 Apr 2012 ?? ?Print Version ?Bookmark and Share

Keywords:power converter? voltage regulator? noise-sensitive design?

Texas Instruments Inc. (TI) has unleashed a portfolio of voltage regulators that claim to deliver the industry's lowest-noise 1A switching power supply without sacrificing efficiency and power performance. According to the company, the TPS54120, the first in TI's family of QuietSupply regulators, cuts switching noise by up to 99 percent, compared to other power conversion devices. The company also said the device helps maximize the performance of precision data converters and amplifiers and sensitive clock distribution circuits used in telecommunications, test equipment, and high-end audio and video equipment.

The TPS54120 features 9?VRMS at 100Hz to 100kHz, and 17?VRMS at 100Hz to 1MHz. It has a high power supply rejection ratio (PSRR) of 83db at 10kHz and 70dB at 100kHz. Additionally, the QuietSupply regulator is synchronizable to external clock from 200kHz to 1.2MHz. TI also boasts the converter's input voltage range of 4.5-17V and adjustable output of 0.8-6V.

The TPS54120 is available in volume from TI and its authorized distributors in a thermally enhanced 4 x 4mm, 20-pin QFN or TSSOP package, and has a suggested resale price of $1.95 each in 1,000-unit quantities. The TPS54120EVM-103 contains all of the external components required for a low noise, 1A solution with internal thermal and current limit shutdowns, power good output monitor, tracking and enabling/disabling circuitry, added TI.

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