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AC/DC & DC/DC converters (integrated FET)

TPS62684

現行

針對小型解決方案進行最佳化的 1600-mA、高效率降壓轉換器

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產品規格表

TPS62684

現行
產品規格表 立即訂購

產品詳細資料

Iout (max) (A) 1.6 Vin (min) (V) 3.25 Vin (max) (V) 5.5 Topology Buck Type Converter Switching frequency (min) (kHz) 3500 Switching frequency (max) (kHz) 5250 Features Enable, Light load efficiency, Output discharge, Spread Spectrum, Synchronous Rectification Control mode Voltage mode Vout (min) (V) 2.85 Vout (max) (V) 2.85 Rating Catalog Operating temperature range (°C) -40 to 85 Iq (typ) (A) 0.0058
Iout (max) (A) 1.6 Vin (min) (V) 3.25 Vin (max) (V) 5.5 Topology Buck Type Converter Switching frequency (min) (kHz) 3500 Switching frequency (max) (kHz) 5250 Features Enable, Light load efficiency, Output discharge, Spread Spectrum, Synchronous Rectification Control mode Voltage mode Vout (min) (V) 2.85 Vout (max) (V) 2.85 Rating Catalog Operating temperature range (°C) -40 to 85 Iq (typ) (A) 0.0058
DSBGA (YFF) 6 1.4000000000000001 mm² 1 x 1.4000000000000001
  • VIN Range From 3.25V to 5.5V
  • Total Solution Size <12 mm2
  • Three Surface-Mount External Components Required
    (One 0805 MLCC Inductor, Two small Ceramic Capacitors)
  • Complete Sub 1-mm Component Profile Solution
  • Spread Spectrum, PWM Frequency Dithering
  • Best in Class Load and Line Transient
  • ±2% Total DC Voltage Accuracy
  • Up to 1600mA load current
  • 5.5MHz Regulated Frequency Operation
  • Available in a 6-Pin NanoFree (WCSP)
  • APPLICATIONS
    • Tablet PC
    • Cell Phones, Smart-Phones
    • Digital TV, WLAN, GPS and Bluetooth Applications

    •
    • VIN Range From 3.25V to 5.5V
    • Total Solution Size <12 mm2
    • Three Surface-Mount External Components Required
      (One 0805 MLCC Inductor, Two small Ceramic Capacitors)
    • Complete Sub 1-mm Component Profile Solution
    • Spread Spectrum, PWM Frequency Dithering
    • Best in Class Load and Line Transient
    • ±2% Total DC Voltage Accuracy
    • Up to 1600mA load current
    • 5.5MHz Regulated Frequency Operation
    • Available in a 6-Pin NanoFree (WCSP)
  • APPLICATIONS
    • Tablet PC
    • Cell Phones, Smart-Phones
    • Digital TV, WLAN, GPS and Bluetooth Applications

    •

    The TPS62684 is a high-frequency synchronous step-down dc-dc converter optimized for battery-powered portable applications in which high load currents in a very small solution size and height are required. The TPS62684 is optimized for high efficiency and low output voltage ripple, supports up to 1600-mA load current and allows the use of low cost chip inductor and capacitors. With a input voltage range of 3.25V to 5.5V, the device supports applications powered by Li-Ion batteries as well as 5V rails.

    The TPS62684 operates at a 5.5-MHz switching frequency with PWM spread spectrum capability. For noise-sensitive applications, this provides a lower noise regulated output, as well as low noise at the input. The device supports a 2.85V fixed output voltage, requiring no external feedback network.

    These features, combined with high PSRR and AC load regulation performance, make this device suitable to replace a linear regulator to obtain better power conversion efficiency.

    The TPS62684 is a high-frequency synchronous step-down dc-dc converter optimized for battery-powered portable applications in which high load currents in a very small solution size and height are required. The TPS62684 is optimized for high efficiency and low output voltage ripple, supports up to 1600-mA load current and allows the use of low cost chip inductor and capacitors. With a input voltage range of 3.25V to 5.5V, the device supports applications powered by Li-Ion batteries as well as 5V rails.

    The TPS62684 operates at a 5.5-MHz switching frequency with PWM spread spectrum capability. For noise-sensitive applications, this provides a lower noise regulated output, as well as low noise at the input. The device supports a 2.85V fixed output voltage, requiring no external feedback network.

    These features, combined with high PSRR and AC load regulation performance, make this device suitable to replace a linear regulator to obtain better power conversion efficiency.
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    類型 標題 日期
    * Data sheet TPS62684 1600-mA, High-Efficiency Step-Down Converter Optimized for Smallest Solution Size datasheet PDF | HTML 2014年 3月 31日
    Analog Design Journal Understanding 100% mode in low-power DC/DC converters 2018年 6月 22日
    Analog Design Journal Achieving a clean startup by using a DC/DC converter with a precise enable-pin threshold 2017年 10月 24日
    Analog Design Journal Testing tips for applying external power to supply outputs without an input voltage 2016年 10月 24日
    Analog Design Journal Five steps to a great PCB layout for a step-down converter 2015年 1月 29日
    EVM User's guide TPS62684EVM-647 User's Guide 2014年 4月 8日
    Application note Understanding the Absolute Maximum Ratings of the SW Node (Rev. A) 2012年 1月 13日
    Analog Design Journal IQ: What it is, what it isn’t, and how to use it 2011年 6月 17日

    設計與開發

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    開發板

    TPS62684EVM-647 — 1.6-A 降壓式 (降壓) 轉換器評估模組

    The TPS62684EVM-647 is designed to help the user easily evaluate and test the operation and functionality of the TPS62684. The EVM converts up to a 5.5-V input voltage to a 2.85-V regulated output voltage at up to 1.6A of output current. The TPS62684 supports a total solution size of 12 mm2.

    使用指南: PDF
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    PWR647 gerbers

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