1.2A Switch, 38V High Voltage Boost Converter in 2x2mm QFN Package


Product details


Vin (Min) (V) 3 Vin (Max) (V) 18 Vout (Min) (V) 3 Vout (Max) (V) 38 Switch current limit (Typ) (A) 1.2 Regulated outputs (#) 1 Switching frequency (Min) (kHz) 1000 Switching frequency (Max) (kHz) 1200 Iq (Typ) (mA) 2.3 Features Enable, Light Load Efficiency Duty cycle (Max) (%) 93 Operating temperature range (C) -40 to 85 Rating Catalog open-in-new Find other Boost converters (integrated switch)

Package | Pins | Size

WSON (DRV) 6 4 mm² 2.0 x 2.0 WSON (DRV) 6 4 mm² 2 x 2 open-in-new Find other Boost converters (integrated switch)


  • 3-V to 18-V Input Voltage Range
  • High Output Voltage: Up to 38 V
  • 1.2-A Integrated Switch
  • 1.2-MHz Fixed Switching Frequency
  • 12 V at 300 mA and 24 V at 150 mA From
    5-V Input (Typical)
  • Up to 93% Efficiency
  • Output Voltage Reprogramming
  • Skip-Switching Cycle for Output
    Regulation at Light Load
  • Built-in Soft Start
  • 6-Pin, 2-mm × 2-mm QFN Package
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The TPS61170 is a monolithic, high-voltage switching regulator with integrated 1.2-A, 40-V power MOSFET. The device can be configured in several standard switching-regulator topologies, including boost and SEPIC. The device has a wide input-voltage range to support applications with input voltage from multicell batteries or regulated 5-V, 12-V power rails.

The TPS61170 operates at a 1.2-MHz switching frequency, allowing the use of low-profile inductors and low-value ceramic input and output capacitors. External loop compensation components give the user flexibility to optimize loop compensation and transient response. The device has built-in protection features, such as pulse-by-pulse overcurrent limit, soft start, and thermal shutdown.

The FB pin regulates to a reference voltage of 1.229 V. The reference voltage can be lowered using a 1-wire digital interface (Easyscale™ protocol) through the CTRL pin. Alternatively, a pulse width-modulation (PWM) signal can be applied to the CTRL pin. The duty cycle of the signal reduces the feedback reference voltage proportionally.

The TPS61170 is available in a 6-pin 2-mm × 2-mm QFN package, allowing a compact power-supply solution.

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Technical documentation

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet TPS61170 1.2-A High-Voltage Boost Converter in 2-mm x 2-mm2 QFN Package datasheet (Rev. D) Dec. 18, 2014
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 Charging Supercapacitor Banks from USB Type C Port With Boost Converter Jul. 17, 2018
Selection guide Power Management Guide 2018 (Rev. R) Jun. 25, 2018
Application note Optimizing Transient Response of Internally Compensated DC-DC Converters (Rev. B) Nov. 29, 2017
Application note Input Current Limit Solution for USB-Supplied Power System Aug. 03, 2017
Application note Extending the Soft Start Time Without a Soft Start Pin (Rev. B) Jun. 15, 2017
Application note Design of UVLO for LM27313 (Rev. B) Apr. 08, 2014
Application note Basic Calculation of a Boost Converter's Power Stage (Rev. C) Jan. 08, 2014
Application note 4Q 2012 Issue Analog Applications Journal Sep. 25, 2012
Application note Simple open-circuit protection for boost converters in LED driver applications Sep. 25, 2012
Application note How to Design a Boost Converter With the TPS61170 (Rev. C) Jun. 06, 2012
Application note Design considerations for a resistive feedback divider in a DC/DC converter Apr. 26, 2012
Application note IQ: What it is, what it isn’t, and how to use it Jun. 17, 2011
Application note Load Disconnect for the TPS61170 (Rev. A) Mar. 14, 2011
More literature Журнал по применению аналоговых компонентов 3кв. 2010 Jan. 13, 2011
Application note Description Compensating the Current Mode Boost Control Loop Dec. 09, 2010
Application note 3Q 2010 Issue Analog Applications Journal Aug. 11, 2010
Application note Coupled inductors broaden DC/DC converter usage Aug. 11, 2010
User guide TPS61170EVM-280 User's Guide (Rev. C) Sep. 18, 2009
Application note How to Design a SEPIC Converter With the TPS61175 Jun. 12, 2009
Application note Compensating and measuring the DC/DC converter loop that powers a high-power LED Oct. 22, 2008
Application note Designing DC/DC converters based on SEPIC topology Oct. 22, 2008
Application note Q4 2008 Issue Analog Applications Journal Oct. 22, 2008
User guide TPS61170EVM-316 (Rev. A) Sep. 25, 2008
More literature Seminar 400 Topic 1 - Current-Mode Control of Switching Power Supplies Feb. 15, 2001

Design & development

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

Hardware development


The TPS61170EVM-280 facilitates evaluation of the TPS61170 High Voltage 1.2 A Boost Converter. The TPS61170 is monolithic high voltage switching regulator. It can be operated in several of the standard switching configurations, including boost and SEPIC. The 1.2 A, 40 V high (...)

  • 3 V to 18 V Input Voltage Range
  • High Output Voltage: Up to 38 V
  • 1.2 A Integrated Switch
  • 1.2 MHz Fixed Switching Frequency
  • Programmable reference voltage using PWM signal or Easyscale
  • Built-in Soft Start
The TPS61170EVM-316 facilitates evaluation of the TPS61170 1.2A High Voltage Boost Converter in a SEPIC configuration.
3 V to 18 V Input Voltage Range High Output Voltage: Up to 38 V 1.2 A Integrated Switch 1.2 MHz Fixed Switching Frequency Programmable reference voltage using PWM signal or Easyscale Built-in Soft Start

Software development

SLVC160.ZIP (136 KB)

Design tools & simulation

SLVM100A.ZIP (33 KB) - PSpice Model
SLVM230.TSC (416 KB) - TINA-TI Reference Design
SLVM231.ZIP (55 KB) - TINA-TI Spice 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
  • (...)
SLVC153.ZIP (100 KB)

Reference designs

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document-generic Schematic
5V to 3.3V 1.2A DC-DC Converter with 200mS Vout Hold-up Time Circuit Reference Design
PMP4494 — The PMP4494 is a 5V to 3.3V 1.2A DC-DC converter with a Vout hold-up circuit. The synchronous buck converter LM20242 is used in the design to provide high efficiency for the system voltage. A boost converter TPS61170 boosts an auxiliary rail from 10V up to 20V to provide the backup voltage. A supply (...)
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Design files
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TIDA-00231 TIDA-00231 is a reference design for an industrial Programmable Logic Controller (PLC) analog output module. The design provides a unique power saving solution for a digital-to-analog converter (DAC)-based analog current output module with an adaptive power supply. This adaptive power supply (...)
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TIDA-00304 This solution stores and delivers "last gasp" energy for systems, such as SSDs, that require functionality for a short time after power loss in order to shut down in a controlled fashion. By storing holdup energy at higher than bus voltage the amount of capacitance can be reduced by up to 80 (...)
document-generic Schematic

CAD/CAE symbols

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WSON (DRV) 6 View options

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