TPS62172-Q1

ACTIVE

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

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Product details

Parameters

Vin (Min) (V) 3 Vin (Max) (V) 17 Vout (Min) (V) 3.3 Vout (Max) (V) 3.3 Iout (Max) (A) 0.5 Regulated outputs (#) 1 Switching frequency (Min) (kHz) 2250 Switching frequency (Max) (kHz) 2250 Features Enable, Light Load Efficiency, Output Discharge, Power Good, Synchronous Rectification Control mode Constant on-time (COT), DCS-Control TI functional safety category Functional Safety-Capable Duty cycle (Max) (%) 100 Type Converter Operating temperature range (C) -40 to 125 Rating Automotive open-in-new Find other Buck converters (integrated switch)

Package | Pins | Size

WSON (DSG) 8 4 mm² 2 x 2 open-in-new Find other Buck converters (integrated switch)

Features

  • 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

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Description

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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Technical documentation

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Type Title Date
* Datasheet 3-V to 17-V 0.5-A Step-Down Converters with DCS-Control datasheet (Rev. E) May 26, 2020
Application notes TPS6217x-Q1 Functional Safety FIT Rate and Failure Mode Distribution Jan. 27, 2020
Technical articles Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019
Application notes Understanding 100% mode in low-power DC/DC converters Jun. 22, 2018
Application notes Achieving a clean startup by using a DC/DC converter with a precise enable-pin t Oct. 24, 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
Technical articles Power over your Coax Mar. 25, 2015
Application notes Five steps to a great PCB layout for a step-down converter Jan. 29, 2015

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
$25.00
Description

The TPS62170EVM-627 (HPA627-002) uses the TPS62170 adjustable version and is set to a 3.3-V output. 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 (...)

Design tools & simulation

SIMULATION MODELS Download
SLVM434A.ZIP (44 KB) - PSpice Model
SIMULATION MODELS Download
SLVMA54.ZIP (44 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SLVMA55.ZIP (54 KB) - TINA-TI Spice Model

Reference designs

REFERENCE DESIGNS Download
Automotive 2-MP camera module reference design with MIPI CSI-2 video interface, FPD-Link III and POC
TIDA-01130 — The TIDA-01130 reference design demonstrates a very small solution size for 2-MP automotive cameras with the capability of much faster forward channel data rate speeds by using MIPI CSI-2 interface and TI's 4Gbps FPD-Link III serializer. The higher throughput capability of this camera enables CMS (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Automotive 1.3MP Camera Module Reference Design with 12-bit Raw Video Output up to 100MHz PCLK
TIDA-01392 — Camera modules for ADAS applications can be very space constrained.  The TIDA-01392 combines a 1.3-MP imager, a 1.9-Gbit/s serializer and the necessary power supplies. All of this functionality is contained on a 20-mm × 20-mm PCB design. The camera module reference design also simplifies (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
WSON (DSG) 8 View options

Ordering & quality

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