Product details


Vin (Min) (V) 4.7 Vin (Max) (V) 28 Vout (Min) (V) 3.3 Vout (Max) (V) 3.3 Iout (Max) (A) 0.5 Iq (Typ) (uA) 4.8 Switching frequency (Min) (kHz) 1000 Switching frequency (Max) (kHz) 1000 Features Enable, Light Load Efficiency, Output Discharge, Power Good, Synchronous Rectification Operating temperature range (C) -40 to 85 Rating Catalog Regulated outputs (#) 1 open-in-new Find other Buck converters (integrated switch)

Package | Pins | Size

WSON (DQC) 10 6 mm² 3 x 2 open-in-new Find other Buck converters (integrated switch)


  • DCS-Control™ Topology
  • Input Voltage Range 4.75 V to 28 V
  • Quiescent Current Typically 4.8 µA (Sleep Mode)
  • 100% Duty Cycle Mode
  • Active Output Discharge
  • Power Good Output
  • Output Current of 500 mA
  • Output Voltage Range 1 VDC to 6 V
  • Switching Frequency of Typically 1 MHz
  • Seamless Power Save Mode Transition
  • Undervoltage Lockout
  • Short Circuit Protection
  • Over Temperature Protection
  • Available in 2-mm × 3-mm 10-pin WSON Package
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The TPS6217x is a high efficiency synchronous step-down DC/DC converter, based on the DCS-Control™ topology.

With a wide operating input voltage range of 4.75 V to 28 V, the device is ideally suited for systems powered from multi cell Li-Ion as well as 12 V and even higher intermediate supply rails, providing up to 500-mA output current.

The TPS6217x automatically enters power save mode at light loads, to maintain high efficiency across the whole load range. As well, it features a sleep mode to supply applications with advanced power save modes like ultra low power micro controllers. The power good output may be used for power sequencing and/or power on reset.

The device features a typical quiescent current of 22 µA in normal mode and 4.8 µA in sleep mode. In sleep mode, the efficiency at very low load currents can be increased by as much as 20%. In shutdown mode, the shutdown current is less than 2 µA and the output is actively discharged.

The TPS6217x, available in an adjustable and a fixed output voltage version, is packaged in a small 2-mm × 3-mm 10-pin WSON package.

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Same functionality but is not pin-for-pin or parametrically equivalent to the compared device:
TPS62172 ACTIVE 3–17V 0.5A Step-Down Converter in 2x2 QFN package A similar product with a 17-V input range.

Technical documentation

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Type Title Date
* Data sheet TPS6217x 28-V, 0.5-A Step-Down Converter With Sleep Mode datasheet (Rev. C) Mar. 05, 2015
User guide TPS62175 Buck Converter Evaluation Module User's Guide (Rev. A) Jun. 08, 2021
Technical article Minimize the impact of the MLCC shortage on your power application Mar. 29, 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 A Topical Index of TI Low Power Buck DC/DC Application Notes Jan. 17, 2018
Application note Achieving a clean startup by using a DC/DC converter with a precise enable-pin t Oct. 24, 2017
Application note Extending the Soft Start Time Without a Soft Start Pin (Rev. B) Jun. 15, 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 Five steps to a great PCB layout for a step-down converter Jan. 29, 2015
Technical article Maybe that LDO isn’t the best choice… or maybe it is! Jun. 08, 2014
Technical article We Were Made for Each Other Feb. 26, 2014
Application note Accurately measuring efficiency of ultralow-IQ devices Jan. 22, 2014
Application note Using the TPS62175 in an Inverting Buck Boost Topology (Rev. A) Oct. 02, 2013
Application note High-efficiency, low-ripple DCS-Control offers seamless PWM/pwr-save transitions Jul. 25, 2013
Application note Optimizing the TPS62175 Output Filter Oct. 17, 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

document-generic User guide
The BOOSTXL-AFE031-DF1 evaluation module features the AFE031, TI’s integrated power-line communication (PLC) analog front-end device. When paired with a supported C2000™ MCU LaunchPad™ development kit, the BoosterPack™ plug-in module offers a robust evaluation platform for (...)
  • AFE031-based PLC transceiver for SunSpec rapid shutdown applications
  • Integrated powerline driver with thermal and overcurrent protection
  • Large output swing: 12Vpp at 1.5A with 15VDC supply
  • Programmable Tx/Rx filters and gain control
  • C2000Ware transmit and receive examples
document-generic User guide

Step Down Converter With Snooze/Sleep/Standby Mode Evaluation Module Board

This EVM is designed to help the user easily evaluate and test the operation and functionality of the TPS62175. The EVM converts a 4.7-V to 28-V input voltage to a regulated 3.3-V output voltage that delivers 500 mA.
  • 4.7V to 28V input voltage
  • 500 mA output current
  • SLEEP mode

Design tools & simulation

SLVM733A.ZIP (54 KB) - PSpice Model
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 (...)
  • 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
  • (...)
SLVC453.ZIP (281 KB)

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SunSpec Rapid Shutdown Transmit and Receive Reference Design
TIDA-060001 — This reference design interfaces an AFE031 Powerline Communications Analog Front End with a C2000 MCU to send and receive data over a wired coupled interface using frequency shift keying (FSK). The design demonstrates the SunSpec standard protocol transmitting the specific 33-bit word packet using (...)
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Compact CAN-to-Ethernet Converter using 32-bit ARM Cortex-M4F MCU Reference Design
TIDA-00203 This reference design demonstrates a small form-factor Controller Access Network (CAN)-to-Ethernet converter using the TM4C129XNCZAD 32-bit ARM® Cortex™-M4F MCU. Supporting 10/100 Base-T compliant with IEEE 802.3 standard, this reference design is useful for industrial drives (...)
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TIDA-00226 Serial communications have been widely used in grid infrastructure equipments. But the limitation of transmission distance and bandwidth of serial communication leads to demand for a more flexible and high-speed method to meet modern smart grid network migration. Ethernet has been accepted as an (...)
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Connected Ethernet, USB, and LCD Reference Design
TIDM-CONNECTED-ETHERNET This TI Design will demonstrate several ethernet- and LCD-enabled applications such as remote sensor monitoring, ethernet configuration via web-based and LCD dashboards and aware applications that interface with weather websites.
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