Product details

Vin (Min) (V) 3 Vin (Max) (V) 17 Vout (Min) (V) 0.8 Vout (Max) (V) 12 Iout (Max) (A) 4 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 Rating Catalog Regulated outputs (#) 1 Control mode Constant on-time (COT), DCS-Control Duty cycle (Max) (%) 100
Vin (Min) (V) 3 Vin (Max) (V) 17 Vout (Min) (V) 0.8 Vout (Max) (V) 12 Iout (Max) (A) 4 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 Rating Catalog Regulated outputs (#) 1 Control mode Constant on-time (COT), DCS-Control Duty cycle (Max) (%) 100
VQFN-HR (RGX) 11 6 mm² 3 x 2
  • 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
  • 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

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.

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
* Data sheet TPS62135, TPS621351 High Accuracy 3-V to 17-V 4-A Step-Down Converters with DCS-Control datasheet (Rev. B) PDF | HTML 04 Apr 2017
Application note Quick Reference Guide To TI Buck Switching DC/DC Application Notes (Rev. B) PDF | HTML 23 May 2022
EVM User's guide TPS6213xEVM Buck Converter Evaluation Module User's Guide (Rev. B) PDF | HTML 08 Jun 2021
Selection guide Buck Converter Quick Reference Guide (Rev. B) 08 Apr 2021
Analog Design Journal Methods of output-voltage adjustment for DC/DC converters 14 Jun 2019
Technical article Minimize the impact of the MLCC shortage on your power application 29 Mar 2019
Application note Performing Accurate PFM Mode Efficiency Measurements (Rev. A) 11 Dec 2018
Application note QFN and SON PCB Attachment (Rev. B) PDF | HTML 24 Aug 2018
Application note Solve Point-of-Load Power Design Challenges: Single Board Computer Applications 24 Aug 2018
Analog Design Journal Understanding 100% mode in low-power DC/DC converters 22 Jun 2018
Technical article Output accuracy varies with temperature – 1% is not always 1% 02 May 2018
Analog Design Journal Achieving a clean startup by using a DC/DC converter with a precise enable-pin t 24 Oct 2017
Application note Feedforward Capacitor to Improve Stability and Bandwidth of TPS621/821-Family (Rev. A) 28 Jun 2017
Application note Sequencing and Tracking With the TPS621-Family and TPS821-Family (Rev. A) 28 Jun 2017
Application note Step-Down LED Driver With Dimming With the TPS621-Family and TPS821-Family (Rev. A) 28 Jun 2017
Analog Design Journal Testing tips for applying external power to supply outputs without an input volt 24 Oct 2016
Analog Design Journal Understanding frequency variation in the DCS-Control(TM) topology 30 Oct 2015
Application note Basic Calculation of a Buck Converter's Power Stage (Rev. B) 17 Aug 2015
Analog Design Journal Five steps to a great PCB layout for a step-down converter 29 Jan 2015
Application note Using the TPS62150 in a Split Rail Topology 26 Mar 2014
Analog Design Journal High-efficiency, low-ripple DCS-Control offers seamless PWM/pwr-save transitions 25 Jul 2013
Application note Using the TPS6215x in an Inverting Buck-Boost Topology.. (Rev. C) 19 Dec 2012
Application note How to Measure the Control Loop of DCS-Control Devices (Rev. A) 09 Aug 2012
Analog Design Journal Design considerations for a resistive feedback divider in a DC/DC converter 26 Apr 2012
Application note Understanding the Absolute Maximum Ratings of the SW Node (Rev. A) 13 Jan 2012
Application note Voltage Margining Using the TPS62130 15 Dec 2011
Application note Choosing an Appropriate Pull-up/Pull-down Resistor for Open Drain Outputs 19 Sep 2011
Analog Design Journal IQ: What it is, what it isn’t, and how to use it 17 Jun 2011

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

TPS62135EVM-698 — Evaluation Module for TPS62135, 17-V Input, 4-A Output, Step-Down Converter

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.
Not available on TI.com
Simulation model

TPS62135 PSpice Transient Model (Rev. A)

SLVMBS7A.ZIP (47 KB) - PSpice Model
Simulation model

TPS621351 PSpice Transient Model

SLVMBT6.ZIP (45 KB) - PSpice Model
Simulation model

TPS62135 SIMPLIS Transient and Average Model (Rev. A)

SLVMDF9A.ZIP (469 KB) - SIMPLIS Model
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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 (...)
Gerber file

PWR698 Gerber

SLVC692.ZIP (296 KB)
Package Pins Download
VQFN-HR (RGX) 11 View options

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