TPS62135

ACTIVE

3-17V 4.0A Step-Down Converter with 1% accuracy and PFM/Forced-PWM in 2x3QFN

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Product details

Parameters

Vin (Min) (V) 3 Vin (Max) (V) 17 Vout (Min) (V) 0.8 Vout (Max) (V) 12 Iout (Max) (A) 4 Iq (Typ) (mA) 0.018 Iq (Typ) (uA) 18 Switching frequency (Min) (kHz) 2500 Switching frequency (Max) (kHz) 2500 Features Enable, Light Load Efficiency, Output Discharge, Power Good, Pre-Bias Start-Up, Synchronous Rectification, Tracking, UVLO Fixed, VID Interface 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-HR (RGX) 11 6 mm² 3 x 2 open-in-new Find other Buck converters (integrated switch)

Features

  • Output Voltage Accuracy ± 1% (PWM mode)
  • Input Voltage Range: 3 V to 17 V
  • Quiescent Current 18 µA Typ
  • Output Voltage from 0.8 V to 12 V
  • Adjustable Soft-Start
  • Forced PWM or PWM/PFM operation
  • Typical switching frequency of 2.5MHz in forced PWM
  • Precise ENABLE input allows
    • User-Defined Undervoltage Lockout
    • Exact Sequencing
  • 100% Duty Cycle Mode
  • Automatic Efficiency Enhancement AEE™
  • DCS-Control™ Topology
  • Available with Active Output Discharge
  • Optional HICCUP Overcurrent Protection
  • Power Good Output
  • Available in 3-mm x 2-mm VQFN Package

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Description

The TPS62135 and TPS621351 are high efficiency and easy to use synchronous step-down DC-DC converters, based on the DCS-Control™ Topology. The devices wide input voltage range of 3-V to 17-V makes it suitable for multi-cell Li-Ion as well as 12-V intermediate supply rails. The devices provide 4-A continuous output current. The TPS62135 automatically enters Power Save Mode at light loads to maintain high efficiency across the whole load range. With that, the device is well suited for applications that require connected standby performance, like ultra low power computers. With the MODE pin set to low, the switching frequency of the device is adapted automatically based on the input and output voltage. This technique is called Automatic Efficiency Enhancement (AEE™) and maintains high conversion efficiency over the whole operation range. It provides a 1% output voltage accuracy in PWM mode and therefore enables the design of a power supply with high output voltage accuracy.

The device has a typical quiescent current of 18 µA. In shutdown mode the current is typically 1 µA and the output is actively discharged for TPS62135 while the output voltage discharge feature is disabled in TPS621351.

The TPS62135 is available as an adjustable version, packaged in a 3-mm x 2-mm VQFN package.

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Technical documentation

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Type Title Date
* Datasheet TPS62135, TPS621351 High Accuracy 3-V to 17-V 4-A Step-Down Converters with DCS-Control datasheet (Rev. B) Apr. 04, 2017
Selection guides Buck Converter Quick Reference Guide (Rev. A) Mar. 31, 2020
Application notes 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 notes Performing Accurate PFM Mode Efficiency Measurements (Rev. A) Dec. 11, 2018
Application notes QFN and SON PCB Attachment (Rev. B) Aug. 24, 2018
Application notes Solve Point-of-Load Power Design Challenges: Single Board Computer Applications Aug. 24, 2018
Application notes 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
Application notes A Topical Index of TI Low Power Buck DC/DC Application Notes Jan. 17, 2018
Application notes Achieving a clean startup by using a DC/DC converter with a precise enable-pin t Oct. 24, 2017
Application notes Feedforward Capacitor to Improve Stability and Bandwidth of TPS621/821-Family (Rev. A) Jun. 28, 2017
Application notes Sequencing and Tracking With the TPS621-Family and TPS821-Family (Rev. A) Jun. 28, 2017
Application notes Step-Down LED Driver With Dimming With the TPS621-Family and TPS821-Family (Rev. A) Jun. 28, 2017
User guides TPS62135EVM-698 and TPS62136EVM-698 Evaluation Modules (Rev. A) Mar. 31, 2017
Application notes Testing tips for applying external power to supply outputs without an input volt Oct. 24, 2016
Application notes Understanding frequency variation in the DCS-Control(TM) topology Oct. 30, 2015
Application notes Basic Calculation of a Buck Converter's Power Stage (Rev. B) Aug. 17, 2015
Application notes Five steps to a great PCB layout for a step-down converter Jan. 29, 2015
Application notes Using the TPS62150 in a Split Rail Topology Mar. 26, 2014
Application notes High-efficiency, low-ripple DCS-Control offers seamless PWM/pwr-save transitions Jul. 25, 2013
Application notes Using the TPS6215x in an Inverting Buck-Boost Topology.. (Rev. C) Dec. 19, 2012
Application notes How to Measure the Control Loop of DCS-Control Devices (Rev. A) Aug. 09, 2012
Application notes Design considerations for a resistive feedback divider in a DC/DC converter Apr. 26, 2012
Application notes Understanding the Absolute Maximum Ratings of the SW Node (Rev. A) Jan. 13, 2012
Application notes Voltage Margining Using the TPS62130 Dec. 15, 2011
Application notes Choosing an Appropriate Pull-up/Pull-down Resistor for Open Drain Outputs Sep. 19, 2011
Application notes 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 BOARDS Download
document-generic User guide
49
Description
The TPS62135EVM-698 is designed to help the user easily evaluate and test the operation and functionality of the TPS62135. The EVM converts a 3V to 17V input voltage to a regulated output voltage of 3.3V at up to 4A output current. The TPS62135 comes in a small 2.0 x 3.0 mm² QFN package.
Features
  • Input Voltage Range: 3V to 17V
  • Output Current of 4A
  • Output Voltage Accuracy of ±1% (PWM Mode)
  • Automatic Efficiency Enhancement AEE™
  • Adjustable Soft Start

Design tools & simulation

SIMULATION MODELS Download
SLVMBS7A.ZIP (47 KB) - PSpice Model
SIMULATION MODELS Download
SLVMBT6.ZIP (45 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
  • (...)
GERBER FILES Download
SLVC692.ZIP (296 KB)
GERBER FILES Download
SLVC780.ZIP (138 KB)

CAD/CAE symbols

Package Pins Download
VQFN-HR (RGX) 11 View options

Ordering & quality

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