TPS54519

ACTIVE

2.95V to 6V Input, 5A Synchronous Step-Down Converter

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Product details

Parameters

Vin (Min) (V) 2.95 Vin (Max) (V) 6 Vout (Min) (V) 0.6 Vout (Max) (V) 4.5 Iout (Max) (A) 5 Iq (Typ) (uA) 455 Switching frequency (Min) (kHz) 200 Switching frequency (Max) (kHz) 2000 Features Enable, Frequency Synchronization, Power Good, Synchronous Rectification, Tracking, Forced PWM, Soft Start Adjustable Operating temperature range (C) -40 to 140 Rating Catalog Regulated outputs (#) 1 open-in-new Find other Buck converters (integrated switch)

Package | Pins | Size

WQFN (RTE) 16 9 mm² 3 x 3 open-in-new Find other Buck converters (integrated switch)

Features

  • Two 30 mΩ (typical) MOSFETs for high efficiency
    at 5-A loads
  • 200kHz to 2MHz Switching Frequency
  • 0.6 V Voltage Reference With ± 1% Initial Accuracy
  • Adjustable Slow Start / Sequencing
  • UV and OV Power Good Output
  • Low Operating and Shutdown Quiescent Current
  • Safe Start-up into Pre-Biased Output
  • Cycle by Cycle Current Limit, Thermal and Frequency
    Fold Back Protection
  • –40°C to 140°C Operating Junction
    Temperature Range
  • Thermally Enhanced 3mm × 3mm 16-pin QFN
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Description

The TPS54519 device is a full featured 6 V, 5 A, synchronous step down current mode converter with two integrated MOSFETs.

The TPS54519 enables small designs by integrating the MOSFETs, implementing current mode control to reduce external component count, reducing inductor size by enabling up to 2 MHz switching frequency, and minimizing the IC footprint with a small 3mm × 3mm thermally enhanced QFN package.

Efficiency is maximized through the integrated 30mΩ MOSFETs and 350µA typical supply current. Using the enable pin, shutdown supply current is reduced to 2 µA by entering a shutdown mode.

Under voltage lockout is internally set at 2.6 V, but can be increased by programming the threshold with a resistor network on the enable pin. The output voltage startup ramp is controlled by the slow start pin. An open drain power good signal indicates the output is within 93% to 107% of its nominal voltage.

Frequency fold back and thermal shutdown protects the device during an overcurrent condition.

The TPS54519 is supported in the SwitcherPro Software Tool at www.ti.com/switcherpro.

For more SWIFT documentation, see the TI website at www.ti.com/swift.

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Technical documentation

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Type Title Date
* Data sheet 2.95-V to 6-V Input, 5-A Synchronous Step Down SWIFT Converter datasheet (Rev. A) Dec. 13, 2013
Selection guide Buck Converter Quick Reference Guide (Rev. B) Apr. 08, 2021
Technical article Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019
User guide TPS54519EVM-037, 5-A, SWIFT(TM) Regulator Evaluation Module Aug. 15, 2011

Design & development

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

Hardware development

EVALUATION BOARD Download
document-generic User guide
49
Description
The TPS54478EVM-037 evaluation module (EVM) is a fully assembled and tested circuit for evaluating the TPS54478 Synchronous Step-Down Switcher. The EVM operates from a 3V to 6V supply and provides a 1.8V output at 4A.
Features
  • 2.95V to 6V Operation
  • 4A Output Current
  • 1.8V Output
  • Hiccup Model Current Limit
  • Start up into Pre-bias
  • 0.6V Internal Reference Voltage
EVALUATION BOARD Download
document-generic User guide
49
Description
The TPS54519EVM-037 evaluation module (EVM) is a fully assembled and tested circuit for evaluating the TPS54519 Synchronous Step-Down Converter. The EVM operates from a 3V to 6V supply and provides a 1.8V output at 5A.
Features
  • 2.95V to 6V Operation
  • 5A Output Current
  • 1.8V Output
  • Hiccup Model Current Limit
  • 0.6V Internal Reference Voltage

Design tools & simulation

SIMULATION MODEL Download
SLVM377B.ZIP (287 KB) - PSpice Model
SIMULATION MODEL Download
SLVMA72A.ZIP (836 KB) - PSpice Model
SIMULATION MODEL Download
SLVMB99A.TSC (391 KB) - TINA-TI Reference Design
SIMULATION MODEL Download
SLVMBA0.TSC (392 KB) - TINA-TI Reference Design
SIMULATION MODEL Download
SLVMBA1.ZIP (50 KB) - TINA-TI Spice Model
SIMULATION MODEL Download
SLVMBS8.TSC (106 KB) - TINA-TI Reference Design
SIMULATION TOOL 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
  • (...)

CAD/CAE symbols

Package Pins Download
WQFN (RTE) 16 View options

Ordering & quality

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  • MSL rating/Peak reflow
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  • Qualification summary
  • Ongoing reliability monitoring

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