TPS54317

ACTIVE

3V to 6V Input, 3A Synchronous Step-Down SWIFT™ Converter

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Product details

Parameters

Vin (Min) (V) 3 Vin (Max) (V) 6 Vout (Min) (V) 0.9 Vout (Max) (V) 3.3 Iout (Max) (A) 3 Iq (Typ) (mA) 6.2 Iq (Typ) (uA) 6200 Switching frequency (Min) (kHz) 280 Switching frequency (Max) (kHz) 1600 Features Enable, Frequency Synchronization, Power Good, Synchronous Rectification Operating temperature range (C) -40 to 125 Rating Catalog Regulated outputs (#) 1 open-in-new Find other Buck converters (integrated switch)

Package | Pins | Size

VQFN (RHF) 24 20 mm² 5 x 4 open-in-new Find other Buck converters (integrated switch)

Features

  • 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

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Description

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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Technical documentation

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet 1.6MHz 3-V to 6-V Input 3-A Synchronous Step-Down Swift(TM) Converter datasheet (Rev. B) Sep. 25, 2009
Technical articles Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019
More literature Исходные проекты ll May 13, 2011
User guides TPS54317EVM-159 3-Amp, SWIFT(TM) Regulator EVM Jan. 06, 2006

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARDS Download
document-generic User guide
10
Description

The TPS54317EVM-159 kit allows the designer to easily evaluate the TPS54317 synchronous buck DC/DC converter with integrated 3 A 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 3-6 V (...)

Features
  • External compensation for design flexibility
  • Greater than 90% efficiency
  • 1% regulation accuracy
  • Switching frequency set to 1.1 MHZ and is programmable to 1.6 MHz
  • Supported by SWIFT Designer software tool for quick and easy design at www.ti.com/swift

Design tools & simulation

SIMULATION MODELS Download
SLVM130A.ZIP (59 KB) - PSpice Model
SIMULATION MODELS Download
SLVM301.TSC (838 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SLVM302.ZIP (37 KB) - TINA-TI Spice Model
SIMULATION TOOLS Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
BILL OF MATERIALS (BOM) Download
SLVR349.PDF (260 KB)
BILL OF MATERIALS (BOM) Download
SLVR351.PDF (304 KB)
BILL OF MATERIALS (BOM) Download
SLVR380.PDF (241 KB)

CAD/CAE symbols

Package Pins Download
VQFN (RHF) 24 View options

Ordering & quality

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