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TPS61086

ACTIVE

18.5-V, 2-A, 2-MHz step-up DC/DC converter

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Data sheet

TPS61086

ACTIVE
Data sheet Order now

Product details

Rating Catalog Topology Boost Vin (max) (V) 6 Vin (min) (V) 2.3 Vout (max) (V) 18.5 Vout (min) (V) 2.8 Switch current limit (typ) (A) 2.6 Features Enable, Light-load efficiency, Nonsynchronous, Power good Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.00007 Duty cycle (max) (%) 90
Rating Catalog Topology Boost Vin (max) (V) 6 Vin (min) (V) 2.3 Vout (max) (V) 18.5 Vout (min) (V) 2.8 Switch current limit (typ) (A) 2.6 Features Enable, Light-load efficiency, Nonsynchronous, Power good Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.00007 Duty cycle (max) (%) 90
VSON (DRC) 10 9 mm² (3 mm × 3 mm)
  • 2.3-V to 6.0-V Input Voltage Range
  • 18.5-V Boost Converter With 2.0-A Switch Current
  • 1.2-MHz Switching Frequency
  • Power Save Mode for Improved Efficiency at Low-
    Output Power or Forced PWM
  • Adjustable Soft-Start
  • Thermal Shutdown
  • Undervoltage Lockout
  • 10-Pin VSON Package
  • 2.3-V to 6.0-V Input Voltage Range
  • 18.5-V Boost Converter With 2.0-A Switch Current
  • 1.2-MHz Switching Frequency
  • Power Save Mode for Improved Efficiency at Low-
    Output Power or Forced PWM
  • Adjustable Soft-Start
  • Thermal Shutdown
  • Undervoltage Lockout
  • 10-Pin VSON Package

The TPS61086 device is a high-frequency, high-efficiency DC-to-DC converter with an integrated 2.0-A, 0.13-Ω power switch capable of providing an output voltage up to 18.5 V. The implemented boost converter is based on a fixed frequency of 1.2-MHz, pulse-width-modulation (PWM) controller that allows the use of small external inductors and capacitors and provides fast transient response.

At light-load, the device can operate in Power Save Mode with pulse-frequency-modulation (PFM) to improve the efficiency while keeping a low-output voltage ripple. For very noise-sensitive applications, the device can be forced to PWM Mode operation over the entire load range by pulling the MODE pin high. The external compensation allows optimizing the application for specific conditions. A capacitor connected to the soft-start pin minimizes inrush current at start-up.

The TPS61086 device is a high-frequency, high-efficiency DC-to-DC converter with an integrated 2.0-A, 0.13-Ω power switch capable of providing an output voltage up to 18.5 V. The implemented boost converter is based on a fixed frequency of 1.2-MHz, pulse-width-modulation (PWM) controller that allows the use of small external inductors and capacitors and provides fast transient response.

At light-load, the device can operate in Power Save Mode with pulse-frequency-modulation (PFM) to improve the efficiency while keeping a low-output voltage ripple. For very noise-sensitive applications, the device can be forced to PWM Mode operation over the entire load range by pulling the MODE pin high. The external compensation allows optimizing the application for specific conditions. A capacitor connected to the soft-start pin minimizes inrush current at start-up.
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Technical documentation

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Top documentation Type Title Format options Date
* Data sheet TPS61086 18.5-V PFM – PWM Step-Up DC – DC Converter With 2.0-A Switch datasheet (Rev. B) PDF | HTML Jul 16, 2015
Application note QFN and SON PCB Attachment (Rev. C) PDF | HTML Dec 6, 2023
Application note Basic Calculation of a Boost Converter's Power Stage (Rev. D) PDF | HTML Oct 28, 2022
Application note Using External Bias to Broaden Input Voltage Range of Boost Converters PDF | HTML Nov 8, 2021
Application note Negative Input to Negative Output Step-Up Converter Design Using TPS61086 PDF | HTML Jul 23, 2021
Application note Performing Accurate PFM Mode Efficiency Measurements (Rev. A) Dec 11, 2018
Application note Charging Supercapacitor Banks from USB Type C Port With Boost Converter Jul 17, 2018
Application note AN-2020 Thermal Design By Insight, Not Hindsight (Rev. C) Apr 23, 2013
Application note Low Cost 1W Isolated Power Supply Solution with TPS61085 Jun 26, 2012
Analog design Journal Design considerations for a resistive feedback divider in a DC/DC converter Apr 26, 2012
Application note Understanding the Absolute Maximum Ratings of the SW Node (Rev. A) Jan 13, 2012
Analog design Journal IQ: What it is, what it isn’t, and how to use it Jun 17, 2011
Application note Minimizing Ringing at the Switch Node of a Boost Converter Sep 15, 2006

Design & development

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

Evaluation board

TPS61086EVM-526 — TPS61086EVM-526 Evaluation Module

The TPS61086EVM-526 evaluation module is a fully assembled and tested circuit for evaluating the TPS61086 step-up DC/DC converter. The EVM operates from a 2.3V to 6V input voltage. It generates an output voltage of 12V with a switch current of 2A minimum.
User guide: PDF
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Simulation model

TPS61086 TINA-TI Transient Reference Design

SLVM360.TSC (853 KB) - TINA-TI reference design
Supported products & hardware
Simulation model

TPS61086 TINA-TI Transient Spice Model

SLVM361.ZIP (28 KB) - TINA-TI Spice model
Supported products & hardware
Simulation model

TPS61086 Unencrypted PSpice Transient Model Package (Rev. B)

SLIM136B.ZIP (53 KB) - PSpice model
Supported products & hardware
Package Pins CAD symbols, footprints & 3D models
VSON (DRC) 10 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

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