TPS63027

ACTIVE

High Efficiency 4.5A Switch Single-Inductor Buck-Boost Converter

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Product details

Parameters

Topology Buck-Boost Vin (Min) (V) 2.3 Vin (Max) (V) 5.5 Vout (Max) (V) 5.5 Vout (Min) (V) 1 Duty cycle (Max) (%) 100 Features Enable, Light Load Efficiency, Output Discharge Switch current limit (Typ) (A) 4.5 Switching frequency (Min) (kHz) 2500 Switching frequency (Max) (kHz) 2500 Iq (Typ) (mA) 0.035 Rating Catalog Iout (Max) (A) 2 Operating temperature range (C) -40 to 125 open-in-new Find other Buck-boost, inverting & split-rail converters (integrated switch)

Package | Pins | Size

DSBGA (YFF) 25 5 mm² 2.126 x 2.108 open-in-new Find other Buck-boost, inverting & split-rail converters (integrated switch)

Features

  • Real Buck or Boost Operation with Automatic and Seamless Transition Between Buck and Boost Operation
  • 2.3 V to 5.5 V Input Voltage Range
  • 1.0V to 5.5V Output Voltage Range
  • 2 A Continuous Output Current : VIN≥ 2.5 V, VOUT= 3.5 V
  • Efficiency up to 96%
  • 2.5MHz Typical Switching Frequency
  • 35-µA Operating Quiescent Current
  • Integrated Soft Start
  • Power Save Mode
  • True Shutdown Function
  • Output Capacitor Discharge Function
  • Over-Temperature Protection and Over-Current Protection
  • Wide Capacitance Selection
  • Small 2.1 mm × 2.1 mm, 25-pin WCSP
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Description

The TPS63027 is a high efficiency, low quiescent current buck-boost converters suitable for application where the input voltage is higher or lower than the output. Output currents can go as high as 2 A in boost mode and as high as 4 A in buck mode. The maximum average current in the switches is limited to a typical value of 4.5 A. The TPS63027 regulates the output voltage over the complete input voltage range by automatically switching between buck or boost mode depending on the input voltage ensuring a seamless transition between modes. The buck-boost converter is based on a fixed frequency, pulse-width-modulation (PWM) controller using synchronous rectification to obtain highest efficiency. At low load currents, the converter enters Power Save Mode to maintain high efficiency over the complete load current range. There is a PFM/PWM pin that allows the user to choose between automatic PFM/PWM mode operation and forced PWM operation. During PWM mode a fixed-frequency of typically 2.5 MHz is used. The output voltage is programmable using an external resistor divider, or is fixed internally on the chip. The converter can be disabled to minimize battery drain. During shutdown, the load is disconnected from the battery. The device is packaged in a 25-pin WCSP package measuring 2.1 mm × 2.1 mm.

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Technical documentation

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Type Title Date
* Datasheet TPS63027 High Current, High Efficiency Single Inductor Buck-Boost Converter datasheet May 06, 2016
Application note A Topical Index of TI Low-Power Buck-Boost Converter Application Notes May 11, 2020
Application note Layer Design for Reducing Radiated EMI of DC to DC Buck-Boost Converters Apr. 22, 2020
Application note Different Methods to Drive LEDs Using TPS63XXX Buck-Boost Converters (Rev. C) Jul. 03, 2019
Application note Performing Accurate PFM Mode Efficiency Measurements (Rev. A) Dec. 11, 2018
Application note Understanding Undervoltage Lockout in Power Devices (Rev. A) Sep. 19, 2018
Application note Basic Calculations of a 4 Switch Buck-Boost Power Stage (Rev. B) Jul. 09, 2018
User guide TPS63027EVM-870 User's Guide Dec. 09, 2016
Application note Low-power TEC driver Nov. 18, 2014
Application note Extending the Soft Start Time in the TPS63010 Buck-Boost Converter Dec. 05, 2012
Application note Design considerations for a resistive feedback divider in a DC/DC converter Apr. 26, 2012
Application note Choosing an Appropriate Pull-up/Pull-down Resistor for Open Drain Outputs Sep. 19, 2011
Application note 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
Application note Dynamically Adjustable Output Using the TPS63000 Aug. 15, 2006

Design & development

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Hardware development

EVALUATION BOARD Download
document-generic User guide
49
Description
The TPS63027EVM-870 is designed to help the user easily evaluate and test the operation and functionality of the TPS63027 Buck-Boost Converter. The EVM operates from 2.3-V to 5.5V-V input voltage. The output voltage is set to 3.3V. Output currents can go up to 4 A. The TPS63027 comes in a small 2.12 (...)
Features
  • Input Voltage Range: 2.3 V to 5.5 V
  • Output Voltage Range: 1.0 V to 5.5 V
  • Output Current up to 2A in Boost mode and 4 A in Buck mode
  • Efficiency up to 95% in Buck or Boost Mode and up to 96% when VIN=VOUT
  • 2.5MHz Typical Switching Frequency

Design tools & simulation

SIMULATION MODEL Download
SLVMBX2A.ZIP (76 KB) - PSpice 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
  • (...)
CALCULATION TOOL Download
SLVC808A.ZIP (1889 KB)

CAD/CAE symbols

Package Pins Download
DSBGA (YFF) 25 View options

Ordering & quality

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