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.

• 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

• Vin (Min) (V)
• 3
• Vin (Max) (V)
• 6
• Vout (Min) (V)
• 0.9
• Vout (Max) (V)
• 3.3
• Iout (Max) (A)
• 3
• Iq (Typ) (uA)
• 6200
• Switching frequency (Min) (kHz)
• 280
• Switching frequency (Max) (kHz)
• 1600
• Features
• Enable, Frequency Synchronization, Power Good, Synchronous Rectification
• Rating
• Catalog
• Regulated outputs (#)
• 1
• Control mode
• Voltage Mode
• Duty cycle (Max) (%)
• 90

TPS54317的完整型号有：TPS54317RHFR、TPS54317RHFT，以下是这些产品的关键参数及官网采购报价：

TPS54317RHFR，工作温度：-40 to 125，封装：VQFN (RHF)-24，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网TPS54317RHFR的批量USD价格：1.951（1000+）

TPS54317RHFT，工作温度：-40 to 125，封装：VQFN (RHF)-24，包装数量MPQ：250个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网TPS54317RHFT的批量USD价格：2.341（1000+）

TPS54317EVM-159 — 1.6MHz、3A、3-6V 输入步降转换器

The TPS54317EVM-159 kit allows the designer to easily evaluate the TPS54317 synchronous buck DC/DC converter with integrated 3A continuous power MOSFETs. This design is optimized for small size by taking advantage of the high switching frequency of the TPS54317. The input range is 3-6V (...)

TPS54317 Unencrypted PSpice Transient Model Package (Rev. A)

PSpice for TI 可提供帮助评估模拟电路功能的设计和仿真环境。此功能齐全的设计和仿真套件使用 Cadence 的模拟分析引擎。PSpice for TI 可免费使用，包括业内超大的模型库之一，涵盖我们的模拟和电源产品系列以及精选的模拟行为模型。

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在?PSpice for TI 设计和仿真工具中，您可以搜索 TI (...)