TPS62823

ACTIVE

2.4V-5.5V input, 3A step-down converter with 1% accuracy in 1.5x2mm QFN

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Product details

Parameters

Vin (Min) (V) 2.4 Vin (Max) (V) 5.5 Vout (Min) (V) 0.6 Vout (Max) (V) 4 Iout (Max) (A) 3 Iq (Typ) (uA) 4 Switching frequency (Min) (kHz) 2200 Switching frequency (Max) (kHz) 2200 Features Enable, Light Load Efficiency, Output Discharge, Over Current Protection, Power Good, Pre-Bias Start-Up, 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

VSON-HR (DLC) 8 3 mm² 1.5 x 2 open-in-new Find other Buck converters (integrated switch)

Features

  • DCS-Control™ topology
  • 26-mΩ/25-mΩ internal power switches (TPS62823)
  • Up to 3-A output current (TPS62823)
  • Very low quiescent current of 4 µA
  • Switching frequency of typically 2.2 MHz
  • 1% feedback voltage accuracy (full temp. range)
  • Enable (EN) and power good (PG)
  • Adjustable output voltage from 0.6 V to 4 V
  • 100% duty-cycle mode
  • Internal soft-start circuitry
  • Seamless power save mode transition
  • Undervoltage lockout
  • Active output discharge
  • Cycle-by-cycle current limit
  • HICCUP short-circuit protection
  • Over temperature protection
  • CISPR11 class B compliant
  • Create a custom design using the TPS62822 with the WEBENCH® Power Designer

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Description

The TPS6282x is an all-purpose and easy to use synchronous step-down DC-DC converter with a very low quiescent current of only 4 µA. It supplies up to 3A output current (TPS62823) from a 2.4-V to 5.5-V input voltage. Based on the DCS-Control™ topology it provides a fast transient response.

The internal reference allows to regulate the output voltage down to 0.6 V with a high feedback voltage accuracy of 1% over the junction temperature range of -40°C to 125°C. The 1-A, 2-A, 3-A scalable pin-to-pin and BOM-to-BOM compatible device family can be used with small 470-nH inductors.

The TPS6282x include an automatically entered power save mode to maintain high efficiency down to very light loads.

The device features a Power Good signal and an internal soft start circuit. It is able to operate in 100% mode. For fault protection, it incorporates a HICCUP current limit as well as a thermal shutdown.

The TPS6282x are packaged in a 2 mm x 1.5 mm QFN-8 package.

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Same functionality but is not pin-for-pin or parametrically equivalent to the compared device:
NEW TPS62826A PREVIEW 2.4-V to 5.5-V input, 3-A step-down converter with forced PWM in 1.5-mm×1.5-mm QFN package Buck converter with forced PWM mode for low ripple in smaller package

Technical documentation

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Type Title Date
* Datasheet TPS6282x 5.5-V, 1-A, 2-A, 3-A Step-Down Converter Family with 1% Accuracy datasheet (Rev. C) Nov. 25, 2019
Selection guide Buck Converter Quick Reference Guide (Rev. A) Mar. 31, 2020
Application note Methods of output-voltage adjustment for DC/DC converters Jun. 14, 2019
Technical articles Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019
Application note Performing Accurate PFM Mode Efficiency Measurements (Rev. A) Dec. 11, 2018
Technical articles QFN soldering tips and tricks Nov. 26, 2018
Application note Step-Dwn (Buck) Convrtr Pwer Solutions for Programmable Logic Controller Systems Sep. 10, 2018
Application note QFN and SON PCB Attachment (Rev. B) Aug. 24, 2018
Application note Solve Point-of-Load Power Design Challenges: Single Board Computer Applications Aug. 24, 2018
Application note Understanding 100% mode in low-power DC/DC converters Jun. 22, 2018
Technical articles Output accuracy varies with temperature – 1% is not always 1% May 02, 2018
Technical articles Design a 3A power supply smaller than a 1608-size resistor Jan. 16, 2018
User guide TPS6282xEVM-005 Evaluation Module Nov. 03, 2017
Application note Achieving a clean startup by using a DC/DC converter with a precise enable-pin t Oct. 24, 2017
Application note Testing tips for applying external power to supply outputs without an input volt Oct. 24, 2016
Application note Understanding frequency variation in the DCS-Control(TM) topology Oct. 30, 2015
Application note Basic Calculation of a Buck Converter's Power Stage (Rev. B) Aug. 17, 2015
Application note Five steps to a great PCB layout for a step-down converter Jan. 29, 2015
Application note Accurately measuring efficiency of ultralow-IQ devices Jan. 22, 2014
Application note High-efficiency, low-ripple DCS-Control offers seamless PWM/pwr-save transitions Jul. 25, 2013
Application note Design considerations for a resistive feedback divider in a DC/DC converter Apr. 26, 2012
Application note Understanding the Absolute Maximum Ratings of the SW Node (Rev. A) Jan. 13, 2012
Application note Choosing an Appropriate Pull-up/Pull-down Resistor for Open Drain Outputs Sep. 19, 2011
Application note IQ: What it is, what it isn’t, and how to use it Jun. 17, 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
49
Description
The TPS62823EVM-005 evaluation module (EVM) facilitates the evaluation of the TPS62823 3-A, step-down converter with DCS-Control in a 2-mm by 1.5-mm QFN package. The EVM outputs a 1.8-V output voltage with 1% accuracy from input voltages between 2.4V and 5.5V with a maximum solution height of 1 mm (...)
Features
  • 2.4V to 5.5V Input Voltage Range
  • 1.8V Output Voltage with 1% accuracy
  • 3A of Output Current
  • 1mm Maximum Solution Height
  • 36 mm2 Total Solution Size
  • Pin-to-pin 1A, 2A, 3A Devices (TPS62821/2/3)

Design tools & simulation

SIMULATION MODEL Download
SLVMCK4.ZIP (821 KB) - PSpice Model
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
  • (...)
GERBER FILE Download
SLUC643.ZIP (304 KB)
GERBER FILE Download
SLVC780.ZIP (138 KB)

Reference designs

REFERENCE DESIGNS Download
High efficiency power supply architecture reference design for protection relay processor module
TIDA-010011 — This reference design showcases various power architectures for generating multiple voltage rails for an application processor module, requiring >1A load current and high efficiency . The required power supply is generated using 5-, 12- or 24-V DC input from the backplane. Power supplies are (...)
document-generic Schematic

CAD/CAE symbols

Package Pins Download
VSON-HR (DLC) 8 View options

Ordering & quality

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