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TPS62825

ACTIVE

2.4-V to 5.5-V input, 2-A step-down converter with 1% accuracy in 1.5-mm x 1.5-mm QFN

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Data sheet

TPS62825

ACTIVE
Data sheet Order now

Product details

Rating Catalog Topology Buck Iout (max) (A) 2 Vin (max) (V) 5.5 Vin (min) (V) 2.4 Vout (max) (V) 1.8, 3.3, 4 Vout (min) (V) 0.6, 1.8, 3.3 Features Enable, Light Load Efficiency, Light load efficiency, Output discharge, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Fixed, Synchronous Rectification, UVLO fixed Control mode Constant on-time (COT), DCS-Control Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.000004 Duty cycle (max) (%) 100 Sector Robotics, Test & measurement
Rating Catalog Topology Buck Iout (max) (A) 2 Vin (max) (V) 5.5 Vin (min) (V) 2.4 Vout (max) (V) 1.8, 3.3, 4 Vout (min) (V) 0.6, 1.8, 3.3 Features Enable, Light Load Efficiency, Light load efficiency, Output discharge, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Fixed, Synchronous Rectification, UVLO fixed Control mode Constant on-time (COT), DCS-Control Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.000004 Duty cycle (max) (%) 100 Sector Robotics, Test & measurement
VSON-HR (DMQ) 6 2.25 mm² (1.5 mm × 1.5 mm)
  • Available as an integrated-inductor power module: TPSM82821, TPSM82822, and TPSM82823
  • DCS-Control topology
  • 1% feedback or output voltage accuracy (full temperature range)
  • Up to 97% efficiency
  • 26mΩ and 25mΩ internal power MOSFETs
  • 2.4V to 5.5V input voltage range
  • 4µA operating quiescent current
  • 2.2MHz switching frequency
  • 0.6V to 4V adjustable output voltage
  • Power save mode for light load efficiency
  • 100% duty cycle for lowest dropout
  • Active output discharge
  • Power-good output
  • Thermal shutdown protection
  • Hiccup short-circuit protection
  • A forced-PWM version for CCM operation
  • Create a custom design using the TPS6282x with the WEBENCH Power Designer
  • Available as an integrated-inductor power module: TPSM82821, TPSM82822, and TPSM82823
  • DCS-Control topology
  • 1% feedback or output voltage accuracy (full temperature range)
  • Up to 97% efficiency
  • 26mΩ and 25mΩ internal power MOSFETs
  • 2.4V to 5.5V input voltage range
  • 4µA operating quiescent current
  • 2.2MHz switching frequency
  • 0.6V to 4V adjustable output voltage
  • Power save mode for light load efficiency
  • 100% duty cycle for lowest dropout
  • Active output discharge
  • Power-good output
  • Thermal shutdown protection
  • Hiccup short-circuit protection
  • A forced-PWM version for CCM operation
  • Create a custom design using the TPS6282x with the WEBENCH Power Designer

The TPS6282x is an easy-to-use, synchronous step-down DC/DC converters family with a very low quiescent current of only 4µA. Based on the DCS-Control topology, the device provides a fast transient response. The internal reference allows to regulate the output voltage down to 0.6V with a high feedback voltage accuracy of 1% over the junction temperature range of –40°C to 125°C. The family devices are pin-to-pin and BOM-to-BOM compatible. The entire design requires a small 470nH inductor, a single 4.7µF input capacitor, and two 10µF or single 22µF output capacitor.

The TPS6282x is available in two flavors. The first includes an automatically entered power save mode to maintain high efficiency down to very light loads for extending the system battery run-time. The second runs in forced-PWM maintaining a continuous conduction mode to make sure of the least ripple in the output voltage and a quasi-fixed switching frequency. The device features a Power-Good signal and an internal soft-start circuit. The device is able to operate in 100% mode. For fault protection, the device incorporates a HICCUP short-circuit protection as well as a thermal shutdown. The device is available in a 6-pin 1.5mm × 1.5mm QFN package, offering the highest power density design.

The TPS6282x is an easy-to-use, synchronous step-down DC/DC converters family with a very low quiescent current of only 4µA. Based on the DCS-Control topology, the device provides a fast transient response. The internal reference allows to regulate the output voltage down to 0.6V with a high feedback voltage accuracy of 1% over the junction temperature range of –40°C to 125°C. The family devices are pin-to-pin and BOM-to-BOM compatible. The entire design requires a small 470nH inductor, a single 4.7µF input capacitor, and two 10µF or single 22µF output capacitor.

The TPS6282x is available in two flavors. The first includes an automatically entered power save mode to maintain high efficiency down to very light loads for extending the system battery run-time. The second runs in forced-PWM maintaining a continuous conduction mode to make sure of the least ripple in the output voltage and a quasi-fixed switching frequency. The device features a Power-Good signal and an internal soft-start circuit. The device is able to operate in 100% mode. For fault protection, the device incorporates a HICCUP short-circuit protection as well as a thermal shutdown. The device is available in a 6-pin 1.5mm × 1.5mm QFN package, offering the highest power density design.
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Technical documentation

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Top documentation Type Title Format options Date
* Data sheet TPS6282x 2.4V to 5.5V Input, 1, 2, 3, 4A Step-Down Converter With 1% Output Accuracy datasheet (Rev. I) PDF | HTML Mar 11, 2024
Application note QFN and SON PCB Attachment (Rev. C) PDF | HTML Dec 6, 2023
Selection guide Buck Converter Quick Reference Guide (Rev. B) Apr 8, 2021
White paper Enabling Higher Data Rates for Optical Modules With Small and Efficient Power PDF | HTML Mar 22, 2021
Application brief Powering VCCINT_VCU Rail in Xilinx® Zynq®UltraScale+™ Family of Multiprocessors PDF | HTML Jun 8, 2020
Analog design Journal Methods of output-voltage adjustment for DC/DC converters Jun 14, 2019
Application note Performing Accurate PFM Mode Efficiency Measurements (Rev. A) Dec 11, 2018
Technical article QFN soldering tips and tricks PDF | HTML Nov 26, 2018
Application note Solve Point-of-Load Power Design Challenges: Single Board Computer Applications Aug 24, 2018
Analog design Journal Understanding 100% mode in low-power DC/DC converters Jun 22, 2018
Technical article Output accuracy varies with temperature – 1% is not always 1% PDF | HTML May 2, 2018
Analog design Journal Achieving a clean startup by using a DC/DC converter with a precise enable-pin threshold Oct 24, 2017
Analog design Journal Testing tips for applying external power to supply outputs without an input voltage Oct 24, 2016
Analog design Journal 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) PDF | HTML Aug 17, 2015
Analog design Journal Five steps to a great PCB layout for a step-down converter Jan 29, 2015
Analog design Journal Accurately measuring efficiency of ultralow-IQ devices Jan 22, 2014
Analog design Journal High-efficiency, low-ripple DCS-Control offers seamless PWM/pwr-save transitions Jul 25, 2013
Analog design Journal 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
Analog design Journal 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.

Evaluation board

TPS62825EVM-794 — 1.5 mm x 1.5 mm QFN Package, 2-A Step-down Converter With 1% Output Accuracy Evaluation Module

The TPS62825EVM-794 evaluation module (EVM) is designed to help the user easily evaluate and test the operation and functionality of the TPS62825 DCS-Control step-down buck converter. The EVM converts a 2.4-V to 5.5-V input voltage to a 1% accuracy regulated output voltage of 1.8 V at up to 2-A (...)

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Simulation model

TPS62825 PSpice Unencrypted Transient Model (Rev. A)

SLVMCL1A.ZIP (748 KB) - PSpice model
Supported products & hardware
Simulation model

TPS62825 SIMPLIS Transient Model

SLVMDA0.ZIP (264 KB) - SIMPLIS model
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Simulation model

TPS6282518 PSpice Transient Model

SLVMCL2.ZIP (723 KB) - PSpice model
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Calculation tool

SLVC780 — Design Tool for Output Voltage Adjustment Using a DAC

Calculator tool to adjust the power supply's output voltage with an analog input voltage
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Reference design

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This power-supply design describes the power tree for the AM62x processor using low cost discrete voltage regulators and details the specific power up/down sequencing requirement of the different voltage rails of the AM62x.

 

The AM62x is an extension of the Sitara™ industrial grade family of (...)

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Reference design

TIPA-050012 — TMS470 power-supply design using the TPS65381x-Q1 PMIC

This power-supply design outlines the optimized power management IC to power the TMS470 and the documentation details the information to help developers integrate the TPS65381x-Q1 PMIC into safety related systems.

The TPS65381x-Q1 device is a multirail power supply designed to supply (...)

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