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DC/DC 轉換器

TPS62912

現行

具有整合式鐵氧體磁珠濾波器補償的 17-VIN、2-A 低雜訊和低漣波降壓轉換器

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產品規格表

TPS62912

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Topology Buck Iout (max) (A) 2 Vin (max) (V) 17 Vin (min) (V) 3 Vout (max) (V) 5.5 Vout (min) (V) 0.8 Features Enable, Frequency synchronization, Low Noise, Output discharge, Overcurrent protection, Power good, Soft-start adjustable, Spread-Spectrum Clock (SSC) Generation, Synchronous rectification, UVLO Fixed Control mode current mode Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.005 Duty cycle (max) (%) 100
Rating Catalog Topology Buck Iout (max) (A) 2 Vin (max) (V) 17 Vin (min) (V) 3 Vout (max) (V) 5.5 Vout (min) (V) 0.8 Features Enable, Frequency synchronization, Low Noise, Output discharge, Overcurrent protection, Power good, Soft-start adjustable, Spread-Spectrum Clock (SSC) Generation, Synchronous rectification, UVLO Fixed Control mode current mode Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.005 Duty cycle (max) (%) 100
VQFN-HR (RPU) 10 4 mm² (2 mm × 2 mm)
  • 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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技術文件

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重要文件 類型 標題 格式選項 下載最新的英文版本 日期
* 資料表 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 2021/3/23
應用說明 Using Low-Noise Buck TPS6291X to Power CMOS Sensor PDF | HTML 2026/6/17
白皮書 以低雜訊電源裝置簡化電源架構 (Rev. A) PDF | HTML Download English Version (Rev.A) PDF | HTML 2024/11/19
技術文章 如何以低雜訊和低漣波設計技術強化電源與訊號完整性 PDF | HTML Download English Version PDF | HTML 2024/10/4
白皮書 簡化高壓系統的電源轉換 PDF | HTML Download English Version PDF | HTML 2023/11/10
Application brief Solving power design challenges in oscilloscope applications PDF | HTML 2023/10/31
應用說明 Powering Noise Sensitive LIDAR ADC Designs With TPS62913 Buck Converter PDF | HTML 2022/2/28
設計指南 Multichannel RF Transceiver Low-Noise Clocking Ref. Des. for Radar and EW Applic PDF | HTML 2021/12/16
應用說明 Powering the AFE7920 with the TPS62913 Low-Ripple and Low-Noise Buck Converter (Rev. A) PDF | HTML 2021/12/13
應用說明 Point-of-Load Solutions for Network Interface Cards (NIC) PDF | HTML 2021/9/8
Application brief Multi-Function Pins for Easy Designing PDF | HTML 2021/7/7
類比設計期刊 Clutter‐free power supplies for RF converters in radar applications (Part 1)  2021/3/18
技術文章 Powering medical imaging applications with DC/DC buck converters PDF | HTML 2020/11/24
技術文章 Minimize noise and ripple with a low-noise buck converter PDF | HTML 2020/10/21
應用說明 Powering Sensitive Noise ADC Designs with the TPS62913 Low-Noise Buck Converter PDF | HTML 2020/9/30
證書 TPS62912EVM-077 EU Declaration of Conformity (DoC) 2020/7/20
技術文章 Understanding and managing buck regulator output ripple PDF | HTML 2020/6/18
應用說明 Output Ripple Voltage for Buck Switching Regulator (Rev. A) 2014/10/13

設計與開發

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開發板

TPS62912EVM-077 — 具有整合式鐵氧體磁珠濾波器補償的 17-V、2-A 低雜訊/低漣波降壓轉換器 EVM

TPS62912EVM-077 (BSR077-002) 評估模組 (EVM) 有助於評估採用 2 mm x 2 mm QFN 小型封裝，具有整合式鐵氧體磁珠濾波器補償的 TPS62912 2-A 低雜訊和低漣波降壓轉換器。EVM 使用高達 17 V 的輸入電壓輸出 3.3-V 輸出電壓。由於雜訊極低，TPS62912 是對雜訊敏感電路中的低壓降 (LDO) 線性穩壓器的高效率替代方案，如資料轉換器、以及時鐘、電信基礎架構、醫療、測試與量測以及航太與國防應用中的放大器。
使用指南: PDF | HTML
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模擬型號

TPS62912 PSpice Transient Model (Rev. A)

SLVMDF7A.ZIP (405 KB) - PSpice 模型
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模擬型號

TPS62912 SIMPLIS Transient and Average Model (Rev. A)

SLVMDJ1A.ZIP (1092 KB) - SIMPLIS 模型
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封裝 針腳 CAD 符號、佔位空間與 3D 模型
VQFN-HR (RPU) 10 Ultra Librarian
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