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TPS61086

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18.5-V, 2-A, 2-MHz step-up DC/DC converter with forced PWM mode

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Data sheet
18.5-V, 2-A, 2-MHz step-up DC/DC converter with forced PWM mode

TPS61086

ACTIVE
Data sheet Order now

Product details

Vin (Min) (V) 2.3 Vin (Max) (V) 6 Vout (Min) (V) 2.8 Vout (Max) (V) 18.5 Switch current limit (Typ) (A) 2.6 Regulated outputs (#) 1 Switching frequency (Min) (kHz) 900 Switching frequency (Max) (kHz) 1500 Iq (Typ) (mA) 0.07 Features Enable, Light Load Efficiency, Power Good Duty cycle (Max) (%) 90 Operating temperature range (C) -40 to 85 Rating Catalog
Vin (Min) (V) 2.3 Vin (Max) (V) 6 Vout (Min) (V) 2.8 Vout (Max) (V) 18.5 Switch current limit (Typ) (A) 2.6 Regulated outputs (#) 1 Switching frequency (Min) (kHz) 900 Switching frequency (Max) (kHz) 1500 Iq (Typ) (mA) 0.07 Features Enable, Light Load Efficiency, Power Good Duty cycle (Max) (%) 90 Operating temperature range (C) -40 to 85 Rating Catalog
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VSON (DRC) 10 9 mm² 3 x 3 VSON (DRC) 10 9 mm² 3.00 x 3.00
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  • 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
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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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Type Title Date
* Data sheet TPS61086 18.5-V PFM – PWM Step-Up DC – DC Converter With 2.0-A Switch datasheet (Rev. B) 16 Jul 2015
Application note Negative Input to Negative Output Step-Up Converter Design Using TPS61086 23 Jul 2021
Application note Performing Accurate PFM Mode Efficiency Measurements (Rev. A) 11 Dec 2018
Application note QFN and SON PCB Attachment (Rev. B) 24 Aug 2018
Application note Charging Supercapacitor Banks from USB Type C Port With Boost Converter 17 Jul 2018
Application note Basic Calculation of a Boost Converter's Power Stage (Rev. C) 08 Jan 2014
Application note AN-2020 Thermal Design By Insight, Not Hindsight (Rev. C) 23 Apr 2013
Application note Low Cost 1W Isolated Power Supply Solution with TPS61085 26 Jun 2012
Analog design journal Design considerations for a resistive feedback divider in a DC/DC converter 26 Apr 2012
Application note Understanding the Absolute Maximum Ratings of the SW Node (Rev. A) 13 Jan 2012
Analog design journal IQ: What it is, what it isn’t, and how to use it 17 Jun 2011
User guide TPS61086EVM-526 05 Oct 2009
Application note Minimizing Ringing at the Switch Node of a Boost Converter 15 Sep 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.
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Simulation model

TPS61086 Unencrypted PSpice Transient Model Package (Rev. B)

SLIM136B.ZIP (53 KB) - PSpice Model
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Simulation model

TPS61086 TINA-TI Transient Reference Design

SLVM360.TSC (853 KB) - TINA-TI Reference Design
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Simulation model

TPS61086 TINA-TI Transient Spice Model

SLVM361.ZIP (28 KB) - TINA-TI Spice Model
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Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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 (...)
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