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TPS54317

現行

3V 至 6V 輸入、3A 同步降壓式 SWIFT™ 轉換器

產品詳細資料

Rating Catalog Topology Buck Iout (max) (A) 3 Vin (max) (V) 6 Vin (min) (V) 3 Vout (max) (V) 3.3 Vout (min) (V) 0.9 Features Enable, Frequency synchronization, Power good, Synchronous Rectification Control mode Voltage mode Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.0062 Duty cycle (max) (%) 90
Rating Catalog Topology Buck Iout (max) (A) 3 Vin (max) (V) 6 Vin (min) (V) 3 Vout (max) (V) 3.3 Vout (min) (V) 0.9 Features Enable, Frequency synchronization, Power good, Synchronous Rectification Control mode Voltage mode Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.0062 Duty cycle (max) (%) 90
VQFN (RHF) 24 20 mm² 5 x 4
  • 60-m MOSFET Switches for High Efficiency at 3-A Continuous Output Current
  • Adjustable Output Voltage Down to 0.9 V With 1% Accuracy
  • Switching Frequency: Adjustable From 280 kHz to 1600 kHz
  • Externally Compensated for Design Flexibility
  • Fast Transient Response
  • Load Protected by Peak Current Limit and Thermal Shutdown
  • Integrated Solution Reduces Board Area and Total Cost
  • Spacing Saving 4mm x 5mm QFN Packaging
  • For SWIFT Documentation, Application Notes, and Design Software, see the TI website at www.ti.com/swift
  • APPLICATIONS
    • Low-Voltage, High-Density Systems With Power Distributed at 5 V or 3.3 V
    • Point of Load Regulation for High Performance DSPs, FPGAs, ASICs, and Microprocessors
    • Broadband, Networking and Optical Communications Infrastructure

  • 60-m MOSFET Switches for High Efficiency at 3-A Continuous Output Current
  • Adjustable Output Voltage Down to 0.9 V With 1% Accuracy
  • Switching Frequency: Adjustable From 280 kHz to 1600 kHz
  • Externally Compensated for Design Flexibility
  • Fast Transient Response
  • Load Protected by Peak Current Limit and Thermal Shutdown
  • Integrated Solution Reduces Board Area and Total Cost
  • Spacing Saving 4mm x 5mm QFN Packaging
  • For SWIFT Documentation, Application Notes, and Design Software, see the TI website at www.ti.com/swift
  • APPLICATIONS
    • Low-Voltage, High-Density Systems With Power Distributed at 5 V or 3.3 V
    • Point of Load Regulation for High Performance DSPs, FPGAs, ASICs, and Microprocessors
    • Broadband, Networking and Optical Communications Infrastructure

As members of the SWIFT family of dc/dc regulators, the TPS54317 low-input-voltage high-output-current synchronous-buck PWM converter integrates all required active components. Included on the substrate with the listed features are a true, high performance, voltage error amplifier that provides high performance under transient conditions; an undervoltage-lockout circuit to prevent start-up until the input voltage reaches 3 V; an internally and externally set slow-start circuit to limit in-rush currents; and a power good output useful for processor/logic reset, fault signaling, and supply sequencing.

The TPS54317 device is available in a thermally enhanced 24-pin QFN (RHF) PowerPAD package, which eliminates bulky heatsinks. TI provides evaluation modules and the SWIFT designer software tool to aid in achieving high-performance power supply designs to meet aggressive equipment development cycles.

As members of the SWIFT family of dc/dc regulators, the TPS54317 low-input-voltage high-output-current synchronous-buck PWM converter integrates all required active components. Included on the substrate with the listed features are a true, high performance, voltage error amplifier that provides high performance under transient conditions; an undervoltage-lockout circuit to prevent start-up until the input voltage reaches 3 V; an internally and externally set slow-start circuit to limit in-rush currents; and a power good output useful for processor/logic reset, fault signaling, and supply sequencing.

The TPS54317 device is available in a thermally enhanced 24-pin QFN (RHF) PowerPAD package, which eliminates bulky heatsinks. TI provides evaluation modules and the SWIFT designer software tool to aid in achieving high-performance power supply designs to meet aggressive equipment development cycles.

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重要文件 類型 標題 格式選項 日期
* Data sheet 1.6MHz 3-V to 6-V Input 3-A Synchronous Step-Down Swift(TM) Converter datasheet (Rev. B) 2009年 9月 25日

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