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TPS62170

ACTIVE

3–17V 0.5A Step-Down Converter with DCS-Control in 2x2 QFN package

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Data sheet

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TPS629206 ACTIVE 3-V to 17-V, 0.6-A, low-IQ, synchronous buck converter in SOT-583 package Higher efficiency with lower IQ and improved Vref accuracy in a smaller package.

TPS62170

ACTIVE
Data sheet Order now

Product details

Rating Catalog Topology Buck Iout (max) (A) 0.5 Vin (max) (V) 17 Vin (min) (V) 3 Vout (max) (V) 6 Vout (min) (V) 0.9 Features Enable, Light Load Efficiency, Output discharge, Power good, Synchronous Rectification Control mode Constant on-time (COT), DCS-Control Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.000017 Duty cycle (max) (%) 100
Rating Catalog Topology Buck Iout (max) (A) 0.5 Vin (max) (V) 17 Vin (min) (V) 3 Vout (max) (V) 6 Vout (min) (V) 0.9 Features Enable, Light Load Efficiency, Output discharge, Power good, Synchronous Rectification Control mode Constant on-time (COT), DCS-Control Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.000017 Duty cycle (max) (%) 100
WSON (DSG) 8 4 mm² 2 x 2
  • DCS-Control™ Topology
  • Input Voltage Range from 3 V to 17 V
  • Up to 500-mA Output Current
  • Adjustable Output Voltage from 0.9 V to 6 V
  • Fixed Output Voltage Versions
  • Seamless Power Save Mode Transition
  • Typically 17-µA Quiescent Current
  • Power Good Output
  • 100% Duty Cycle Mode
  • Short Circuit Protection
  • Over Temperature Protection
  • Pin to Pin Compatible with TPS62160 and TPS62125
  • Available in a 2-mm × 2-mm 8-Pin WSON Package
  • Create a Custom Design using the TPS62170 with the WEBENCH® Power Designer
  • DCS-Control™ Topology
  • Input Voltage Range from 3 V to 17 V
  • Up to 500-mA Output Current
  • Adjustable Output Voltage from 0.9 V to 6 V
  • Fixed Output Voltage Versions
  • Seamless Power Save Mode Transition
  • Typically 17-µA Quiescent Current
  • Power Good Output
  • 100% Duty Cycle Mode
  • Short Circuit Protection
  • Over Temperature Protection
  • Pin to Pin Compatible with TPS62160 and TPS62125
  • Available in a 2-mm × 2-mm 8-Pin WSON Package
  • Create a Custom Design using the TPS62170 with the WEBENCH® Power Designer

The TPS6217x device family are easy to use synchronous step-down DC-DC converters optimized for applications with high power density. A high switching frequency of typically 2.25 MHz allows the use of small inductors and provides fast transient response as well as high output voltage accuracy by utilization of the DCS-Control™ topology.

With its 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 battery as well as from 12-V intermediate power rails. It supports up to 0.5-A continuous output current at output voltages between 0.9 V and 6 V (with 100% duty cycle mode).

Power sequencing is also possible by configuring the enable and open-drain power good pins.

In power save mode, the devices show quiescent current of about 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 2-mm × 2-mm 8-pin WSON package (DSG).

The TPS6217x device family are easy to use synchronous step-down DC-DC converters optimized for applications with high power density. A high switching frequency of typically 2.25 MHz allows the use of small inductors and provides fast transient response as well as high output voltage accuracy by utilization of the DCS-Control™ topology.

With its 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 battery as well as from 12-V intermediate power rails. It supports up to 0.5-A continuous output current at output voltages between 0.9 V and 6 V (with 100% duty cycle mode).

Power sequencing is also possible by configuring the enable and open-drain power good pins.

In power save mode, the devices show quiescent current of about 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 2-mm × 2-mm 8-pin WSON package (DSG).
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Technical documentation

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Top documentation Type Title Format options Date
* Data sheet TPS6217x 3-V to 17-V, 0.5-A Step-Down Converters with DCS-Control™ datasheet (Rev. E) PDF | HTML 10 May 2017
Application note QFN and SON PCB Attachment (Rev. C) PDF | HTML 06 Dec 2023
Application note Using the TPS6215x in an Inverting Buck-Boost Topology.. (Rev. D) PDF | HTML 23 Jan 2023
Application note Quick Reference Guide To TI Buck Switching DC/DC Application Notes (Rev. B) PDF | HTML 23 May 2022
Selection guide Buck Converter Quick Reference Guide (Rev. B) 08 Apr 2021
Technical article How to design an infrared thermometer quickly PDF | HTML 07 Apr 2020
Analog Design Journal Methods of output-voltage adjustment for DC/DC converters 14 Jun 2019
Application note Performing Accurate PFM Mode Efficiency Measurements (Rev. A) 11 Dec 2018
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Analog Design Journal Understanding 100% mode in low-power DC/DC converters 22 Jun 2018
Analog Design Journal Achieving a clean startup by using a DC/DC converter with a precise enable-pin threshold 24 Oct 2017
Application note Feedforward Capacitor to Improve Stability and Bandwidth of TPS621/821-Family (Rev. A) 28 Jun 2017
Analog Design Journal Testing tips for applying external power to supply outputs without an input voltage 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
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 Low-Noise CMOS Camera Supply 15 Dec 2014
Application note Step-Down Converter With Input Overvoltage Protection 04 Sep 2014
Analog Design Journal High-efficiency, low-ripple DCS-Control offers seamless PWM/pwr-save transitions 25 Jul 2013
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 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

TPS62170EVM-627 — Evaluation Module for TPS62170 a 0.5-A, synchronous, step-down converter in a 2x2-mm, 8-pin WSON

The TPS62170EVM-627 (HPA627-002) uses the TPS62170 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. The TPS62170 is a 0.5-A, synchronous, step-down converter in a 2x2-mm, 8-pin WSON package. Both fixed and (...)

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

TPS62170 PSpice Unencrypted Transient Model (Rev. B)

SLVM432B.ZIP (32 KB) - PSpice Model
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Simulation model

TPS62170 TINA-TI Transient Reference Design (Rev. A)

SLVM504A.ZIP (164 KB) - TINA-TI Reference Design
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Simulation model

TPS62170 TINA-TI Transient Spice Model (Rev. A)

SLVM503A.ZIP (52 KB) - TINA-TI Spice 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
Supported products & hardware

Supported products & hardware
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Reference designs

TIDEP-01008 — Multi-sensor platform reference design on Jacinto™ ADAS processors

The multi-sensor platform reference design for Advanced Driver Assistance Systems (ADAS) from D3 Engineering provides qualified developers with a fully functioning evaluation platform for testing and development of ADAS applications, for use primarily in the automotive industry.  D3 also (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-00548 — 4-20mA Analog Input Module Reference Design for Safety Applications

TIDA-00548 is an isolated dual-channel 4- to 20-mA analog input reference design, which can be used as a sub-part for functional safety programmable logic controllers (PLCs). This reference design delivers digitized input values using a 32-bit high-performance analog-to-digital converter (ADC). (...)
Design guide: PDF
Schematic: PDF
Package Pins CAD symbols, footprints & 3D models
WSON (DSG) 8 Ultra Librarian
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