TPS61086

ACTIVE

18.5V PFM/PWM High Efficiency Step-Up DC-DC Converter with 2.0 A Switch

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Product details

Parameters

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 open-in-new Find other Boost converters (integrated switch)

Package | Pins | Size

VSON (DRC) 10 9 mm² 3 x 3 VSON (DRC) 10 9 mm² 3.00 x 3.00 open-in-new Find other Boost converters (integrated switch)

Features

  • 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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Description

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

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet TPS61086 18.5-V PFM – PWM Step-Up DC – DC Converter With 2.0-A Switch datasheet (Rev. B) Jul. 16, 2015
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
Application note Basic Calculation of a Boost Converter's Power Stage (Rev. C) Jan. 08, 2014
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
Application note 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
Application note IQ: What it is, what it isn’t, and how to use it Jun. 17, 2011
User guide TPS61086EVM-526 Oct. 05, 2009
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.

Hardware development

EVALUATION BOARD Download
49
Description
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.
Features
  • 2.3 V to 6 V Input Voltage Range
  • 18.5 V Boost Converter With 2.0 A Switch Current
  • 650 kHz/1.2 MHz Selectable Switching Frequency
  • Adjustable Soft-Start
  • Thermal Shutdown
  • Undervoltage Lockout

Design tools & simulation

SIMULATION MODEL Download
SLIM136B.ZIP (53 KB) - PSpice Model
SIMULATION MODEL Download
SLVM360.TSC (853 KB) - TINA-TI Reference Design
SIMULATION MODEL Download
SLVM361.ZIP (28 KB) - TINA-TI Spice Model
SIMULATION TOOL Download
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 (...)
Features
  • 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
  • (...)

CAD/CAE symbols

Package Pins Download
VSON (DRC) 10 View options

Ordering & quality

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  • Qualification summary
  • Ongoing reliability monitoring

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