TPS548A20

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1.5V to 20V (4.5V to 25V Bias) Input, 15A SWIFT™ Synchronous Step-Down Converter

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Product details

Parameters

Vin (Min) (V) 4.5 Vin (Max) (V) 20 Vout (Min) (V) 0.6 Vout (Max) (V) 5.5 Iout (Max) (A) 15 Iq (Typ) (mA) 1.35 Iq (Typ) (uA) 1350 Switching frequency (Min) (kHz) 250 Switching frequency (Max) (kHz) 1000 Features Adjustable Current Limit, Enable, Frequency Synchronization, Phase Interleaving, Power Good, Pre-Bias Start-Up, Synchronous Rectification, UVLO Adjustable, Soft Start Adjustable 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-CLIP (RVE) 28 16 mm² 4.5 x 3.5 open-in-new Find other Buck converters (integrated switch)

Features

  • Integrated SWIFT™ 9.9-mΩ and 4.3-mΩ MOSFETs Support 15-A Continuous IOUT
  • Wide Conversion Input Voltage Range: 1.5 V to 20 V (with Snubber)
  • Output Voltage Range from 0.6 V to 5.5 V
  • Supports All Ceramic Output Capacitors
  • Reference Voltage: 600 mV with ±0.5% Tolerance from –40°C to 85°C ambient temperature
  • D-CAP3™ Control Mode With Fast Load-Step Response
  • Hiccup Over Current Protection
  • Auto-Skipping Eco-Mode™ for High Light-Load Efficiency
  • FCCM for Tight Output Ripple and Voltage Tolerance Requirements
  • Pre-charged Startup Capability
  • Eight Selectable Frequency Settings from
    200 kHz to 1 MHz
  • 4.5 mm x 3.5 mm, 28-Pin, VQFN-CLIP Package
  • Supported at the WEBENCH™ Design Center

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Description

The TPS548A20 is a small-sized, synchronous buck converter with an adaptive on-time D-CAP3 control mode. The device offers ease-of-use and low bill-of-material count for space-conscious power systems.

This device features high-performance integrated MOSFETs, accurate 0.6-V reference, and an integrated boost switch. Competitive features include very-low external-component count, fast load-transient response, auto-skip mode operation, internal soft-start control, and no requirement for compensation.

A forced continuous conduction mode helps meet tight voltage regulation accuracy requirements for performance DSPs and FPGAs. The TPS548A20 is available in a 28-pin VQFN-CLIP package and is specified from –40°C to 125°C ambient temperature.

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Technical documentation

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet TPS548A20 1.5-V to 20-V (4.5-V to 25-V Bias) Input, 15-A Synchronous Step-Down SWIFT™ Converter datasheet (Rev. A) Dec. 02, 2015
Selection guides Buck Converter Quick Reference Guide (Rev. A) Mar. 31, 2020
Application notes DC/DC Converter Solutions for Hardware Accelerators in Data Center Applications Aug. 14, 2019
Technical articles Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019
Application notes Non-isolated point-of-load solutions for VR13.HC in rack server & datacenter app Mar. 05, 2019
Selection guides Control-Mode Quick Reference Guide (Rev. A) Sep. 14, 2017
Application notes Unified Ground Connection Recommendation on TPS53K- Integrated FET-Converter Dev Jan. 25, 2017
Application notes How to select input capacitors for a buck converter Apr. 26, 2016
Application notes Accuracy-Enhanced Ramp-Generation Design for D-CAP3 Modulation (Rev. A) Apr. 25, 2016
Application notes SMT Guidelines for Stacked Inductor (Inductor On Top) on Voltage Regulator IC Feb. 22, 2016
User guides TPS548A20 EVM User Guide May 13, 2015

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
75
Description

The TPS548A20EVM-PWR737 evaluation module (EVM) uses the TPS548A20. The TPS548A20 is a D-CAP3™ mode, 15A synchronous buck converter with integrated MOSFETs. It provides a fixed 1.2V output at up to 15A from a 12V input bus.

Features
  • 15A DC Steady State Output Current
  • Support pre-bias output voltage start-up
  • Jumper for enable function
  • Jumper for auto-skip and forced CCM selection
  • Jumper for extra 5V input for further power-saving purpose

Software development

APPLICATION SOFTWARE & FRAMEWORKS Download
Digital Power Software
FUSION_DIGITAL_POWER_DESIGNER Fusion Digital Power™  is the Graphical User Interface (GUI) used to configure and monitor select Texas Instruments digital power controllers and sequencer/health monitors. The application uses the PMBus protocol to communicate with the device over serial bus by way of a TI USB adapter.
Features

Some of the tasks you can perform with the GUI include:

  • Turn on or off the power supply output, either through the hardware control line or the PMBus OPERATION command
  • Monitor real-time data. Items such as input voltage, output voltage, output current, temperature, and warnings/faults are continuously (...)

Design tools & simulation

SIMULATION MODELS Download
SLUM498.ZIP (117 KB) - PSpice 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
  • (...)

CAD/CAE symbols

Package Pins Download
VQFN-CLIP (RVE) 28 View options

Ordering & quality

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