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TPS563211

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4.2-V to 17-V, 3-A, synchronous buck converter with 1% accuracy, PG/SS and PFM/forced-PWM in SOT583

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Product details

Parameters

Vin (Min) (V) 4.2 Vin (Max) (V) 18 Vout (Min) (V) 0.6 Vout (Max) (V) 7 Iout (Max) (A) 3 Iq (Typ) (uA) 120 Switching frequency (Min) (kHz) 550 Switching frequency (Max) (kHz) 650 Features Enable, Forced PWM, Light Load Efficiency, Over Current Protection, Power Good, 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

SOT-5X3 (DRL) 8 open-in-new Find other Buck converters (integrated switch)

Features

  • Input voltage: 4.2 V to 18 V
  • Output voltage: 0.6 V to 7 V
    • Up to 3-A continuous output current
    • Minimum switching on-time: 45-ns
    • Maximum duty cycle: 98%
  • High efficiency
    • Integrated 66-mΩ and 33-mΩ MOSFETs
    • Quiescent current 120-µA typical
  • Highly flexible and easy-to-use
    • Selectable Eco-mode or FCCM operation
    • Selectable power good indicator or external soft start
    • Precise enable input
  • High accuracy
    • Reference voltage accuracy: ±1% (25°C)
    • Switching frequency tolerance: ±8.5%
  • Small solution size
    • Internal compensation for ease of use
    • SOT583 package
    • Minimum external components
  • Cycle-by-cycle current limit for both high-side and low-side MOSFETs
  • Non-latched OVP, UVP, UVLO, and TSD protections
  • Create a custom design using TPS563211 with the WEBENCH® Power Designer

All trademarks are the property of their respective owners.

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Description

The TPS563211 is a cost effective and highly flexible synchronous buck converter that provides selectable Eco-mode operation or FCCM (Force Continuous Conduction Mode) operation. Selectable Power-Good indicator or external Soft-Start is also configurable through the MODE pin. Power sequencing is possible by correctly configuring the Enable, Power-Good indicator or external Soft-Start. A wide input voltage range of 4.2 V to 18 V supports a wide variety of common input rails like 12 V and 15 V. It supports up to 3 A continuous output current at output voltages between 0.6 V and 7 V.

The device provides fast transient response with true fixed switching frequency through the use of the Advanced Emulated Current Mode (AECM) control topology. With internal smart loop bandwidth control, the device provides fast transient response over a wide output voltage range without the need for external compensation.

Cycle-by-cycle current limit on the high-side peak current protects the device in overload situations and is enhanced by a low-side valley current limit, which prevents current runaway. Hiccup mode would be triggered under overvoltage protection (OVP), undervoltage protection (UVP), UVLO protection and thermal shutdown.

The device is available in 1.6-mm x 2.1-mm SOT583 package.

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Similar but not functionally equivalent to the compared device:
TPS563231 ACTIVE 4.5-V to 17-V input, 3-A synchronous step-down voltage regulator Same package without soft-start and power-good.

Technical documentation

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Type Title Date
* Data sheet TPS563211 4.2-V to 18-V Input, 3-A Synchronous Buck Converter in SOT583 Package datasheet Sep. 29, 2020
Application note Large Duty Cycle Operation on the TPS563211 May 10, 2021
White paper Achieve fast load-transient response & low EMI with AECM DC/DC control topology Feb. 15, 2021
User guide TPS563211 18-V Input, 3-A Output, 600-kHz, Synchronous Buck Converter SOT583 EVM Sep. 28, 2020
More literature TPS563211EVM EU Declaration of Conformity (DoC) Jul. 29, 2020
Technical article Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019

Design & development

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Hardware development

EVALUATION BOARD Download
document-generic User guide
49
Description
TPS563211 is a simple, easy-to-use, 3-A synchronous step-down converter with Eco-mode and FCCM selectable in SOT583 package. TPS563211EVM is a fully assembled and tested circuit for evaluating the TPS563211 step-down converter. TPS563211EVM operates from 4.2-V to 18-V input (12-V nominal) and (...)
Features
  • AECM control for fast transient response and fixed-frequency
  • Mode pin for Eco-mode and FCCM selection
  • Supports all ceramic output capacitors
  • Good output accuracy
  • SOT583 package

Design tools & simulation

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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
SOT-5X3 (DRL) 8 View options

Ordering & quality

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