Low Input, 20V/1.1A Step-Up DC/DC Converter with Integrated Power Diode and Input/Output Isolation


Product details


Vin (Min) (V) 1.6 Vin (Max) (V) 6 Vout (Min) (V) 1.7 Vout (Max) (V) 17 Switch current limit (Typ) (A) 1.1 Regulated outputs (#) 1 Switching frequency (Min) (kHz) 1000 Switching frequency (Max) (kHz) 1400 Iq (Typ) (mA) 0.9 Features Enable, Output Discharge 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 (DSK) 10 6 mm² 2.5 x 2.5 open-in-new Find other Boost converters (integrated switch)


  • Input range: 1.6 V to 6 V
  • Integrated power diode and isolation FET
  • 20-V Internal switch FET with 1.1-A current
  • Fixed 1.2-MHz switching frequency
  • Efficiency at 15-V output up to 88%
  • Overload and overvoltage protection
  • Programmable soft start-up
  • Load discharge path after IC shutdown
  • 2.5 mm × 2.5 mm × 0.8 mm WSON package
  • Create a custom design using the TPS61093 with the WEBENCH® Power Designer
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The TPS61093 is a 1.2-MHz, fixed-frequency boost converter designed for high integration and high reliability. The IC integrates a 20-V power switch, input/output isolation switch, and power diode. When the output current exceeds the overload limit, the isolation switch of the IC opens up to disconnect the output from the input, thus protecting the IC and the input supply. The isolation switch also disconnects the output from the input during shutdown to minimize leakage current. When the IC is shut down, the output capacitor is discharged to a low voltage level by internal diodes. Other protection features include 1.1-A peak overcurrent protection (OCP) at each cycle, output overvoltage protection (OVP), thermal shutdown, and undervoltage lockout (UVLO).

With its 1.6-V minimum input voltage, the IC can be powered by two alkaline batteries, a single Li-ion battery, or 3.3-V and 5-V regulated supply. The output can be boosted up to 17 V. The TPS61093 is available in 2.5 mm × 2.5 mm VSON package with thermal pad.

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Technical documentation

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Type Title Date
* Data sheet TPS61093 Low-Input Boost Converter With Integrated Power Diode and Input/Output Isolation datasheet (Rev. D) Apr. 26, 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
Selection guide Power Management Guide 2018 (Rev. R) Jun. 25, 2018
Application note Five Steps to a Good PCB Layout of the Boost Converter May 03, 2016
Application note Basic Calculation of a Boost Converter's Power Stage (Rev. C) Jan. 08, 2014
Application note Automated Frequency Response Analyzer Oct. 09, 2013
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
User guide TPS61093EVM-519 Oct. 10, 2009
Application note Minimizing Ringing at the Switch Node of a Boost Converter Sep. 15, 2006
More literature Seminar 400 Topic 1 - Current-Mode Control of Switching Power Supplies Feb. 15, 2001

Design & development

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Hardware development

document-generic User guide
The TPS61093EVM-519 facilitates evaluation of the TPS61093 low input, 20V/1.1A step-up DC/DC converter.
  • Input range: 1.6V to 6V
  • Integrated power diode and input/output isolation
  • 1.2MHz switching frequency
  • 20V internal switch FET with 1.1A current
  • Overload protection
  • Overvoltage protection
  • Programmable Soft Start-up
  • Load discharge passes after IC shutdown

Design tools & simulation

SLVMAK9D.ZIP (49 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
  • (...)

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CAD/CAE symbols

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SON (DSK) 10 View options

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