TPS54120

現行

具整合 DC-DC 轉換器和低壓差穩壓器的低雜訊 1A 電源

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產品詳細資料

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 1 Vin (min) (V) 4.5 Vin (max) (V) 17 Switching frequency (min) (kHz) 500 Switching frequency (max) (kHz) 500 Features Enable, Power good, Synchronous Rectification Control mode current mode Vout (min) (V) 0.8 Vout (max) (V) 6 Iq (typ) (µA) 40 Duty cycle (max) (%) 98
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 1 Vin (min) (V) 4.5 Vin (max) (V) 17 Switching frequency (min) (kHz) 500 Switching frequency (max) (kHz) 500 Features Enable, Power good, Synchronous Rectification Control mode current mode Vout (min) (V) 0.8 Vout (max) (V) 6 Iq (typ) (µA) 40 Duty cycle (max) (%) 98
VQFN (RGY) 24 19.25 mm² 5.5 x 3.5
  • Low-Noise Output: 17 µVRMS at 100 Hz to
    1 MHz
  • Wide Input Voltage Range: 4.5 V to 17 V
  • High Efficiency: 72% at 1 A, 12V Input
  • Excellent Load/Line Transient Response
  • Synchronizable to External Clock: 200 kHz to 1.2 MHz
  • Small Package: 3.5 mm × 5.5 mm QFN-24
  • Low-Noise Output: 17 µVRMS at 100 Hz to
    1 MHz
  • Wide Input Voltage Range: 4.5 V to 17 V
  • High Efficiency: 72% at 1 A, 12V Input
  • Excellent Load/Line Transient Response
  • Synchronizable to External Clock: 200 kHz to 1.2 MHz
  • Small Package: 3.5 mm × 5.5 mm QFN-24

The TPS54120 combines the high-efficiency of a step-down switching (dc-dc) converter with a high power-supply rejection (PSR), low-noise, low-dropout regulator (LDO) to provide an ultra low-noise power supply that delivers quiet power rails to noise-sensitive applications.

With a wide input range of 4.5 V to 17 V, the TPS54120 is ideally suited for systems with 12-V power busses, and supports a 1-A continuous output current. The output voltage can be set from 0.8 V to 6.0 V using external resistors. The dc-dc converter and LDO are completely configurable, allowing the TPS54120 to be used in a wide range of low-noise applications. In addition, the TPS54120 includes features such as softstart, switching frequency synchronization, and a power-good signal.

The device is available in a space-saving, 3.5-mm × 5.5-mm QFN package, and is specified to operate over a –40°C to +125°C junction temperature range.

The TPS54120 combines the high-efficiency of a step-down switching (dc-dc) converter with a high power-supply rejection (PSR), low-noise, low-dropout regulator (LDO) to provide an ultra low-noise power supply that delivers quiet power rails to noise-sensitive applications.

With a wide input range of 4.5 V to 17 V, the TPS54120 is ideally suited for systems with 12-V power busses, and supports a 1-A continuous output current. The output voltage can be set from 0.8 V to 6.0 V using external resistors. The dc-dc converter and LDO are completely configurable, allowing the TPS54120 to be used in a wide range of low-noise applications. In addition, the TPS54120 includes features such as softstart, switching frequency synchronization, and a power-good signal.

The device is available in a space-saving, 3.5-mm × 5.5-mm QFN package, and is specified to operate over a –40°C to +125°C junction temperature range.

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類型 標題 日期
* Data sheet Low-Noise, 1-A Power Supply with Integrated DC-DC Converter and LDO Regulator datasheet (Rev. C) 2012年 6月 22日
User guide TPS54120 Step-Down Converter Evaluation Module User's Guide (Rev. A) PDF | HTML 2021年 11月 1日
Selection guide Low Dropout Regulators Quick Reference Guide (Rev. P) 2018年 3月 21日
Technical article Designing a power supply solution for pipeline ADCs – Part 2 PDF | HTML 2015年 9月 4日
Technical article Designing a power supply solution for pipeline ADCs – Part 1 PDF | HTML 2015年 9月 3日
Technical article How to filter out noise in your DC/DC design PDF | HTML 2015年 8月 18日
Application note Understanding Compensation Network for the TPS54120 (Rev. A) 2012年 5月 9日
Application note Design Procedures for the TPS54120 2012年 3月 15日
Application note TPS54120 Sequencing and Tracking 2012年 1月 25日
Application note Design Guidelines for TPS54120 as a 3-A Switcher and 1-A Switcher Plus LDO 2012年 1月 20日

設計與開發

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開發板

TPS54120EVM-103 — 適用於具有整合 DC-DC 轉換器和低壓差穩壓器之 TPS54120 1A 電源供應的評估模組

The Texas Instruments TPS54120EVM-103 evaluation module (EVM) helps designers evaluate the operation and performance of the TPS54120 Low-Noise, 1A Power Supply with Integrated DC-DC Converter and Low-Dropout Regulator. The EVM configuration contains all of the external components required for a (...)
使用指南: PDF | HTML
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模擬型號

TPS54120 PSpice Transient Model

SBVM150.ZIP (41 KB) - PSpice Model
計算工具

SLVC411 TPS54120 Design Tool Calculator

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支援產品和硬體

產品
AC/DC 和 DC/DC 轉換器 (整合式 FET)
TPS54120 具整合 DC-DC 轉換器和低壓差穩壓器的低雜訊 1A 電源
Gerber 檔案

TPS54120 Gerber Files

SLVC412.ZIP (678 KB)
封裝 針腳 CAD 符號、佔位空間與 3D 模型
VQFN (RGY) 24 Ultra Librarian

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