TPS62912

ACTIVE

17-VIN, 2-A low-noise and low-ripple buck converter with integrated ferrite bead filter compensation

Product details

Rating Catalog Operating temperature range (°C) -40 to 150 Topology Buck Type Converter Iout (max) (A) 2 Vin (min) (V) 3 Vin (max) (V) 17 Switching frequency (min) (kHz) 900 Switching frequency (max) (kHz) 2420 Features Enable, Frequency synchronization, Low Noise, Output discharge, Over Current Protection, Power good, Soft Start Adjustable, Spread Spectrum, Synchronous Rectification, UVLO Fixed Control mode current mode Vout (min) (V) 0.8 Vout (max) (V) 5.5 Iq (typ) (µA) 5000 Duty cycle (max) (%) 100
Rating Catalog Operating temperature range (°C) -40 to 150 Topology Buck Type Converter Iout (max) (A) 2 Vin (min) (V) 3 Vin (max) (V) 17 Switching frequency (min) (kHz) 900 Switching frequency (max) (kHz) 2420 Features Enable, Frequency synchronization, Low Noise, Output discharge, Over Current Protection, Power good, Soft Start Adjustable, Spread Spectrum, Synchronous Rectification, UVLO Fixed Control mode current mode Vout (min) (V) 0.8 Vout (max) (V) 5.5 Iq (typ) (µA) 5000 Duty cycle (max) (%) 100
VQFN-HR (RPU) 10 4 mm² 2 x 2
  • Low output 1/f noise < 20 µVRMS(100 Hz to 100 kHz)
  • Low output voltage ripple < 10 µVRMS after ferrite bead
  • High PSRR of > 65 dB (up to 100 kHz)
  • 2.2-MHz or 1-MHz fixed frequency peak current mode control
  • Synchronizable with external clock (optional)
  • Integrated loop compensation supports ferrite bead for second stage L-C filter with 30-dB attenuation (optional)
  • Spread spectrum modulation (optional)
  • 3.0-V to 17-V input voltage range
  • 0.8-V to 5.5-V output voltage range
  • 57-mΩ/20-mΩ RDSon
  • Output voltage accuracy of ±1%
  • Precise enable input allows
    • User-defined undervoltage lockout
    • Exact sequencing
  • Adjustable soft start
  • Power-good output
  • Output discharge (optional)
  • –40°C to 150°C junction temperature range
  • 2.0-mm × 2.0-mm QFN with 0.5-mm pitch
  • Create a custom design using the TPS6291x with the WEBENCH Power Designer
  • Low output 1/f noise < 20 µVRMS(100 Hz to 100 kHz)
  • Low output voltage ripple < 10 µVRMS after ferrite bead
  • High PSRR of > 65 dB (up to 100 kHz)
  • 2.2-MHz or 1-MHz fixed frequency peak current mode control
  • Synchronizable with external clock (optional)
  • Integrated loop compensation supports ferrite bead for second stage L-C filter with 30-dB attenuation (optional)
  • Spread spectrum modulation (optional)
  • 3.0-V to 17-V input voltage range
  • 0.8-V to 5.5-V output voltage range
  • 57-mΩ/20-mΩ RDSon
  • Output voltage accuracy of ±1%
  • Precise enable input allows
    • User-defined undervoltage lockout
    • Exact sequencing
  • Adjustable soft start
  • Power-good output
  • Output discharge (optional)
  • –40°C to 150°C junction temperature range
  • 2.0-mm × 2.0-mm QFN with 0.5-mm pitch
  • Create a custom design using the TPS6291x with the WEBENCH Power Designer

The TPS6291x devices are a family of high-efficiency, low noise and low ripple current mode synchronous buck converters. The devices are ideal for noise sensitive applications that would normally use an LDO for post regulation such as high-speed ADCs, clock and jitter cleaner, serializer, de-serializer, and radar applications.

The devices operate at a fixed switching frequency of 2.2 MHz or 1 MHz, and can be synchronized to an external clock.

To further reduce the output voltage ripple, the device integrates loop compensation to operate with an optional second-stage ferrite bead L-C filter. This allows an output voltage ripple below 10 µVRMS.

Low-frequency noise levels, similar to a low-noise LDO, are achieved by filtering the internal voltage reference with a capacitor connected to the NR/SS pin.

The optional spread spectrum modulation scheme spreads the DC/DC switching frequency over a wider span, which lowers the mixing spurs.

The TPS6291x devices are a family of high-efficiency, low noise and low ripple current mode synchronous buck converters. The devices are ideal for noise sensitive applications that would normally use an LDO for post regulation such as high-speed ADCs, clock and jitter cleaner, serializer, de-serializer, and radar applications.

The devices operate at a fixed switching frequency of 2.2 MHz or 1 MHz, and can be synchronized to an external clock.

To further reduce the output voltage ripple, the device integrates loop compensation to operate with an optional second-stage ferrite bead L-C filter. This allows an output voltage ripple below 10 µVRMS.

Low-frequency noise levels, similar to a low-noise LDO, are achieved by filtering the internal voltage reference with a capacitor connected to the NR/SS pin.

The optional spread spectrum modulation scheme spreads the DC/DC switching frequency over a wider span, which lowers the mixing spurs.

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Technical documentation

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* Data sheet TPS6291x 3-V to 17-V, 2-A/3-A Low Noise and Low Ripple Buck Converter with Integrated Ferrite Bead Filter Compensation datasheet (Rev. B) PDF | HTML 23 Mar 2021
White paper Simplifying Power Conversion in High-Voltage Systems PDF | HTML 09 Nov 2023
White paper Simplifying Power Architectures With Low-Noise Power Devices PDF | HTML 07 Nov 2023
Application brief Solving power design challenges in oscilloscope applications PDF | HTML 31 Oct 2023
Application note Powering Noise Sensitive LIDAR ADC Designs With TPS62913 Buck Converter PDF | HTML 28 Feb 2022
Design guide Multichannel RF Transceiver Low-Noise Clocking Ref. Des. for Radar and EW Applic PDF | HTML 16 Dec 2021
Application note Powering the AFE7920 with the TPS62913 Low-Ripple and Low-Noise Buck Converter (Rev. A) PDF | HTML 13 Dec 2021
Application brief Multi-Function Pins for Easy Designing PDF | HTML 07 Jul 2021
EVM User's guide TPS62913 Inverting Buck Boost EVM User Guide PDF | HTML 02 Jul 2021
Analog Design Journal Clutter‐free power supplies for RF converters in radar applications (Part 1)  18 Mar 2021
EVM User's guide TPS6291xEVM-077 User's Guide (Rev. A) PDF | HTML 13 Jan 2021
Technical article Powering medical imaging applications with DC/DC buck converters PDF | HTML 24 Nov 2020
Technical article Minimize noise and ripple with a low-noise buck converter PDF | HTML 21 Oct 2020
Application note Powering Sensitive Noise ADC Designs with the TPS62913 Low-Noise Buck Converter PDF | HTML 30 Sep 2020
Certificate TPS62912EVM-077 EU Declaration of Conformity (DoC) 20 Jul 2020
Technical article Understanding and managing buck regulator output ripple PDF | HTML 18 Jun 2020
Application note Output Ripple Voltage for Buck Switching Regulator (Rev. A) 13 Oct 2014

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

TPS62912EVM-077 — 17-V, 2-A low noise/low ripple buck converter with integrated ferrite bead filter compensation EVM

The TPS62912EVM-077 (BSR077-002) evaluation module (EVM) facilitates the evaluation of the TPS62912 2-A low noise and low ripple buck converter with integrated ferrite bead filter compensation in a small 2-mm by 2-mm QFN package. The EVM outputs a 3.3-V output voltage from input voltages up to 17 (...)
User guide: PDF | HTML
Not available on TI.com
Simulation model

TPS62912 PSpice Transient Model (Rev. A)

SLVMDF7A.ZIP (405 KB) - PSpice Model
Simulation model

TPS62912 SIMPLIS Transient and Average Model (Rev. A)

SLVMDJ1A.ZIP (1092 KB) - SIMPLIS Model
Gerber file

BSR077B Gerbers

SLVC818.ZIP (509 KB)
Package Pins CAD symbols, footprints & 3D models
VQFN-HR (RPU) 10 Ultra Librarian

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