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TPS62173

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

Data sheet
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3–17V 0.5A Step-Down Converter in 2x2 QFN package

TPS62173

ACTIVE
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Product details

Parameters

Vin (Min) (V) 3 Vin (Max) (V) 17 Vout (Min) (V) 5 Vout (Max) (V) 5 Iout (Max) (A) 0.5 Iq (Typ) (uA) 17 Switching frequency (Min) (kHz) 2250 Switching frequency (Max) (kHz) 2250 Features Enable, Light Load Efficiency, Output Discharge, Power Good, Synchronous Rectification, Tracking, Voltage Margining Operating temperature range (C) -40 to 125 Rating Catalog Regulated outputs (#) 1 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
  • 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
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Description

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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Pin-for-pin with same functionality to the compared device.
TPS62163 ACTIVE 3V-17V 1A Step-Down Converters with DCS-Control™ A pin-to-pin 1-A product with the same fixed-output voltage.
TPS62170 ACTIVE 3–17V 0.5A Step-Down Converter with DCS-Control in 2x2 QFN package This product has an adjustable output voltage.

Technical documentation

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Type Title Date
* Data sheet TPS6217x 3-V to 17-V, 0.5-A Step-Down Converters with DCS-Control™ datasheet (Rev. E) May 10, 2017
Application note A Topical Index of TI Low Power Buck DC/DC Application Notes (Rev. A) Jun. 25, 2021
Technical article Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019
Application note Supercap last gasp failsafe power for RF comunications in E-Meters Jan. 27, 2019
Application note Performing Accurate PFM Mode Efficiency Measurements (Rev. A) Dec. 11, 2018
Application note QFN and SON PCB Attachment (Rev. B) Aug. 24, 2018
Application note Understanding 100% mode in low-power DC/DC converters Jun. 22, 2018
Application note Achieving a clean startup by using a DC/DC converter with a precise enable-pin t Oct. 24, 2017
Application note Testing tips for applying external power to supply outputs without an input volt Oct. 24, 2016
Application note Understanding frequency variation in the DCS-Control(TM) topology Oct. 30, 2015
Application note Basic Calculation of a Buck Converter's Power Stage (Rev. B) Aug. 17, 2015
Application note Optimizing the TPS62130/40/50/60 Output Filter (Rev. A) Jul. 15, 2015
Application note Five steps to a great PCB layout for a step-down converter Jan. 29, 2015
Application note Step-Down Converter With Input Overvoltage Protection Sep. 04, 2014
Application note High-efficiency, low-ripple DCS-Control offers seamless PWM/pwr-save transitions Jul. 25, 2013
Application note Using the TPS6215x in an Inverting Buck-Boost Topology.. (Rev. C) Dec. 19, 2012
Application note How to Measure the Control Loop of DCS-Control Devices (Rev. A) Aug. 09, 2012
Application note Understanding the Absolute Maximum Ratings of the SW Node (Rev. A) Jan. 13, 2012
Application note Powering the MSP430 from a High Voltage Input using the TPS62122 (Rev. C) Jan. 12, 2012
Application note Choosing an Appropriate Pull-up/Pull-down Resistor for Open Drain Outputs Sep. 19, 2011
Application note IQ: What it is, what it isn’t, and how to use it Jun. 17, 2011

Design & development

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

Hardware development

EVALUATION BOARD Download
document-generic User guide
49
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 (...)

View details
DAUGHTER CARD Download
document-generic User guide
499
Description

The K2G audio daughter card is designed to work in conjunction with the K2G general-purpose EVM (EVMK2G) or EVMK2GX and the EVMK2G or EVMK2GX is required for audio daughter card operation.  The daughter card allows users to develop multichannel audio applications such as A/V receivers (...)

Features
  • Audio expansion compatible with the K2G general-purpose EVM
  • Eight channels of analog input
  • Sixteen channels of analog output
  • S/PDIF input (optical or coaxial)
  • S/PDIF output (coaxial)
  • I2S header for external I/O (HDMI, etc.)
View details

Design tools & simulation

SIMULATION MODEL Download
SLVM435B.ZIP (46 KB) - PSpice Model
SIMULATION MODEL Download
SLVMA56.ZIP (52 KB) - TINA-TI Spice Model
SIMULATION MODEL Download
SLVMA57.ZIP (163 KB) - TINA-TI Reference Design
SIMULATION TOOL Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — 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 (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
View details

Reference designs

REFERENCE DESIGNS Download
Power for Xilinx Versal adaptive compute acceleration platform (ACAP) reference design
PMP22165 — This reference design addresses Xilinx Versal adaptive compute acceleration platform (ACAP) requirements and consists of a power management integrated circuit (PMIC) for system rails plus a multiphase controller and power stages to support higher current processor loads.  On-board dynamic loads (...)
document-generic Schematic
REFERENCE DESIGNS Download
Supercapacitor backup power supply for E-Meters reference design
PMP30528 — This reference design automatically provides back-up voltages to an E-Meter during a power interruption. While the input voltage is between 10 V to 12 V, two buck controllers (TPS62147, TPS62173) generate 3.9 V at 2 A and 5 V at 150 mA. An optional synchronous boost generates 3.3 V at 50 mA. A (...)
document-generic Schematic
REFERENCE DESIGNS Download
PMBus™ voltage regulator reference design for Xilinx® Virtex Ultrascale+™ FPGAs
TIDA-050020 — This reference design uses the TPS53681 multiphase controller and CSD95490Q5MC smart power stages to implement a high-performance design suitable for powering the 0.85-V, 200-A, VCCINT rail of a Xilinx™ Ultrascale+™ FPGA. The secondary output of the controller can then be used to power (...)
document-generic Schematic
REFERENCE DESIGNS Download
Four-Output, Flybuck and Buck Converter for High Performance Computing Reference Design
PMP10837 — The PMP10837 reference design offers dual output rails for use in enterprise computing.  This design implements an isolated step down design, with non-isolated converters on both the primary and secondary side.
document-generic Schematic

CAD/CAE symbols

Package Pins Download
WSON (DSG) 8 View options

Ordering & quality

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  • Ongoing reliability monitoring

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