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TPS62903 ACTIVE 3-V to 17-V, 3-A, high-efficiency and low IQ buck converter 1.5-mm × 2-mm QFN package Higher efficiency with lower IQ and improved Vref accuracy in a smaller package.

Product details

Vin (Min) (V) 3 Vin (Max) (V) 17 Vout (Min) (V) 0.9 Vout (Max) (V) 6 Iout (Max) (A) 3 Iq (Typ) (uA) 17 Switching frequency (Min) (kHz) 1250 Switching frequency (Max) (kHz) 2500 Features Enable, Light Load Efficiency, Output Discharge, Power Good, Pre-Bias Start-Up, Synchronous Rectification, Tracking, Voltage Margining 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) 0.9 Vout (Max) (V) 6 Iout (Max) (A) 3 Iq (Typ) (uA) 17 Switching frequency (Min) (kHz) 1250 Switching frequency (Max) (kHz) 2500 Features Enable, Light Load Efficiency, Output Discharge, Power Good, Pre-Bias Start-Up, Synchronous Rectification, Tracking, Voltage Margining Rating Catalog Regulated outputs (#) 1 Control mode Constant on-time (COT), DCS-Control Duty cycle (Max) (%) 100
VQFN (RGT) 16 9 mm² 3 x 3
  • DCS-Control™ topology
  • Input voltage range: 3 V to 17 V
  • Up to 3-A output current
  • Adjustable output voltage from 0.9 V to 6 V
  • Pin-selectable output voltage (nominal, + 5%)
  • Programmable soft start and tracking
  • Seamless power save mode transition
  • Quiescent current of 17 µA (typical)
  • Selectable operating frequency
  • Power-good output
  • 100% duty cycle mode
  • Short circuit protection
  • Overtemperature protection
  • Pin-to-pin compatible with the TPS62140 and TPS62150
  • Available in a 3-mm × 3-mm, QFN-16 package
  • Use the TPS82130 for faster designs
  • DCS-Control™ topology
  • Input voltage range: 3 V to 17 V
  • Up to 3-A output current
  • Adjustable output voltage from 0.9 V to 6 V
  • Pin-selectable output voltage (nominal, + 5%)
  • Programmable soft start and tracking
  • Seamless power save mode transition
  • Quiescent current of 17 µA (typical)
  • Selectable operating frequency
  • Power-good output
  • 100% duty cycle mode
  • Short circuit protection
  • Overtemperature protection
  • Pin-to-pin compatible with the TPS62140 and TPS62150
  • Available in a 3-mm × 3-mm, QFN-16 package
  • Use the TPS82130 for faster designs

The TPS6213x family are easy-to-use synchronous step down DC-DC converters optimized for applications with high power density. A high switching frequency of typically 2.5 MHz allows the use of small inductors and provides fast transient response as well as high output voltage accuracy by use of the DCS-Control topology.

With their wide operating input voltage range of 3 V to 17 V, the devices are ideally suited for systems powered from either a Li-Ion or other batteries as well as from 12-V intermediate power rails. They support up to 3-A continuous output current at output voltages between 0.9 V and 6 V (with 100% duty cycle mode). The output voltage start-up ramp is controlled by the soft-start pin, which allows operation as either a stand-alone power supply or in tracking configurations. Power sequencing is also possible by configuring the Enable and open-drain Power Good pins.

In power save mode, the devices draw quiescent current of approximately 17 µA from VIN. Power save mode, entered automatically and seamlessly if the load is small, maintains high efficiency over the entire load range. In shutdown mode, the device is turned off and shutdown current consumption is less than 2 µA.

The device, available in adjustable and fixed output voltage versions, is packaged in a 16-pin VQFN package measuring 3 mm × 3 mm (RGT).

The TPS6213x family are easy-to-use synchronous step down DC-DC converters optimized for applications with high power density. A high switching frequency of typically 2.5 MHz allows the use of small inductors and provides fast transient response as well as high output voltage accuracy by use of the DCS-Control topology.

With their wide operating input voltage range of 3 V to 17 V, the devices are ideally suited for systems powered from either a Li-Ion or other batteries as well as from 12-V intermediate power rails. They support up to 3-A continuous output current at output voltages between 0.9 V and 6 V (with 100% duty cycle mode). The output voltage start-up ramp is controlled by the soft-start pin, which allows operation as either a stand-alone power supply or in tracking configurations. Power sequencing is also possible by configuring the Enable and open-drain Power Good pins.

In power save mode, the devices draw quiescent current of approximately 17 µA from VIN. Power save mode, entered automatically and seamlessly if the load is small, maintains high efficiency over the entire load range. In shutdown mode, the device is turned off and shutdown current consumption is less than 2 µA.

The device, available in adjustable and fixed output voltage versions, is packaged in a 16-pin VQFN package measuring 3 mm × 3 mm (RGT).

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Similar products you might be interested in

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TPS62135 ACTIVE 3-17V 4.0A Step-Down Converter with 1% accuracy and PFM/Forced-PWM in 2x3QFN Higher output current (4 A) or more design flexibility.
TPS62903 ACTIVE 3-V to 17-V, 3-A, high-efficiency and low IQ buck converter 1.5-mm × 2-mm QFN package Improved efficiency, smaller size and lower Iq

Technical documentation

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Type Title Date
* Data sheet TPS6213x 3-V to17-V, 3-A Step-Down Converter In 3-mm × 3-mm QFN Package datasheet (Rev. F) PDF | HTML 10 Nov 2021
Application note Quick Reference Guide To TI Buck Switching DC/DC Application Notes (Rev. B) PDF | HTML 23 May 2022
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
Analog Design Journal Understanding 100% mode in low-power DC/DC converters 22 Jun 2018
Application note Extracting a Lumped Output Impedance Model With SIMPLIS or SiMetrix 11 Jun 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
Technical article Is inductor ripple current as a percentage still relevant in low-power step-down converters? 12 Jan 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
Application note Optimizing the TPS62130/40/50/60 Output Filter (Rev. A) 15 Jul 2015
Analog Design Journal Five steps to a great PCB layout for a step-down converter 29 Jan 2015
Application note Step-Down Converter With Input Overvoltage Protection 04 Sep 2014
Application note Step-Down Converter with Cable Voltage Drop Compensation 26 Jun 2014
Technical article Oops! I need more current… 30 May 2014
Technical article Discharge that output rail? 16 May 2014
Application note TPS62130A Differences to TPS62130 02 Apr 2014
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 Powering the MSP430 from a High Voltage Input using the TPS62122 (Rev. C) 12 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

TPS62130EVM-505 — Evaluation Module for TPS62130 a 3-A, synchronous, step-down converter in a 3x3-mm, 16-pin QFN

  • Related Terms:
    • Synchronous Step Down DC-DC Converter
    • DC to DC Step Down Converter
    • Buck DC DC Converter

The TPS62130EVM-505 (HPA505-001) uses the TPS62130 adjustable version and is set to a 3.3-Voutput. The EVM operates with full-rated performance with an input voltage between 3.7 V and 17 V. (...)

User guide: PDF | HTML
Not available on TI.com
Simulation model

TPS62130A PSpice Unencrypted Transient Model (Rev. A)

SLVM893A.ZIP (59 KB) - PSpice Model
Simulation model

TPS62130A SIMPLIS Transient and Average Model

SLVMDN9.ZIP (928 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 (...)
Reference designs

TIDA-00988 — 160-MHz Bandwidth Wireless Signal Tester Reference Design

This reference design implements an IF subsystem for a standard wireless signal tester with an active balun-amplifier (LMH5401), LC bandpass filter, 16-bit ADC (ADC31JB68) and clock cleaner and generator PLL (LMK04828). Measurements using modulated signals demonstrate reception of the signal with (...)
Schematic: PDF
Reference designs

TIDA-00360 — 700–2700 MHz Dual-Channel Receiver with 16-Bit ADC and 100 MHz IF Bandwidth Reference Design

The increasing demand on wireless networks to provide faster data links to customers has driven transceiver hardware to increasingly demanding performance with enough bandwidth to support the largest standardized multi-carrier frequency bands (with band aggregation in some cases) and enough (...)
User guide: PDF
Schematic: PDF
Package Pins Download
VQFN (RGT) 16 View options

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