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TPS62170-Q1

ACTIVE

3-17V 0.5A Automotive Step-Down Converter in 2x2 QFN package

A newer version of this product is available

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Same functionality with different pin-out to the compared device
TPS629206-Q1 ACTIVE Automotive 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.

Product details

Vin (min) (V) 3 Vin (max) (V) 17 Vout (min) (V) 0.9 Vout (max) (V) 6 Iout (max) (A) 0.5 Iq (typ) (mA) 0.017 Switching frequency (min) (kHz) 2250 Switching frequency (max) (kHz) 2250 Features Enable, Light Load Efficiency, Output discharge, Power good, Synchronous Rectification Operating temperature range (°C) -40 to 125 Rating Automotive TI functional safety category Functional Safety-Capable Regulated outputs (#) 1 Control mode Constant on-time (COT), DCS-Control Duty cycle (max) (%) 100 Type Converter
Vin (min) (V) 3 Vin (max) (V) 17 Vout (min) (V) 0.9 Vout (max) (V) 6 Iout (max) (A) 0.5 Iq (typ) (mA) 0.017 Switching frequency (min) (kHz) 2250 Switching frequency (max) (kHz) 2250 Features Enable, Light Load Efficiency, Output discharge, Power good, Synchronous Rectification Operating temperature range (°C) -40 to 125 Rating Automotive TI functional safety category Functional Safety-Capable Regulated outputs (#) 1 Control mode Constant on-time (COT), DCS-Control Duty cycle (max) (%) 100 Type Converter
WSON (DSG) 8 4 mm² 2 x 2
  • DCS-Control™ topology
  • Qualified for automotive applications
  • AEC-Q100 qualified with the following results:
    • Device temperature grade: –40°C to 125°C operating junction temperature range
    • Device HBM ESD classification level H2
    • Device CDM ESD classification level C4B
  • Functional Safety-Capable
    • Documentation available to aid functional safety system design
  • Input voltage range: 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
  • Overtemperature protection
  • Pin-to-pin compatible with TPS62160-Q1
  • Available in a 2 × 2 mm, WSON-8 package
  • Create a custom design using the TPS62170-Q1 with the WEBENCH® power designer
  • DCS-Control™ topology
  • Qualified for automotive applications
  • AEC-Q100 qualified with the following results:
    • Device temperature grade: –40°C to 125°C operating junction temperature range
    • Device HBM ESD classification level H2
    • Device CDM ESD classification level C4B
  • Functional Safety-Capable
    • Documentation available to aid functional safety system design
  • Input voltage range: 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
  • Overtemperature protection
  • Pin-to-pin compatible with TPS62160-Q1
  • Available in a 2 × 2 mm, WSON-8 package
  • Create a custom design using the TPS62170-Q1 with the WEBENCH® power designer

The TPS6217x-Q1 family is an easy to use synchronous step-down DC-DC converter 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 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 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 draw quiescent current of about 17 µA from VIN. Power Save Mode, entered automatically and seamlessly if 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 an 8-pin WSON package measuring 2 × 2 mm (DSG).

The TPS6217x-Q1 family is an easy to use synchronous step-down DC-DC converter 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 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 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 draw quiescent current of about 17 µA from VIN. Power Save Mode, entered automatically and seamlessly if 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 an 8-pin WSON package measuring 2 × 2 mm (DSG).

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Similar products you might be interested in

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TPS62171-Q1 ACTIVE Automotive Catalog 3-17V 0.5A 2.5MHZ Step-Down Converter, 1.8V Output Voltage Same product with a 1.8-V fixed-output voltage.
TPS62172-Q1 ACTIVE 3-17V 0.5A Automotive Step-Down Converter in 2x2 QFN Same product with a 3.3-V fixed-output voltage.
Same functionality with different pin-out to the compared device
TPS62160-Q1 ACTIVE 3V-17V 1A Automotive Step-Down Converters in 2x2SON Pin-compatible product with higher output current (1 A).

Technical documentation

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Type Title Date
* Data sheet 3-V to 17-V 0.5-A Step-Down Converters with DCS-Control datasheet (Rev. E) 26 May 2020
Application note Quick Reference Guide To TI Buck Switching DC/DC Application Notes (Rev. B) PDF | HTML 23 May 2022
Functional safety information TPS6217x-Q1 Functional Safety FIT Rate and Failure Mode Distribution 27 Jan 2020
Analog Design Journal Methods of output-voltage adjustment for DC/DC converters 14 Jun 2019
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
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
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

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
Simulation model

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

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

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

SLVM503A.ZIP (52 KB) - TINA-TI Spice Model
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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Package Pins Download
WSON (DSG) 8 View options

Ordering & quality

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