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Buck-boost, inverting & split-rail converters (integrated switch)

TPS63811

ACTIVE

2.5-A high-efficient buck-boost converter with I²C interface for dynamic voltage scaling

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Data sheet

TPS63811

ACTIVE
Data sheet Order now

Product details

Topology Buck-Boost Vin (Min) (V) 2.2 Vin (Max) (V) 5.5 Vout (Max) (V) 5.2 Vout (Min) (V) 1.8 Duty cycle (Max) (%) 100 Features Dynamic Voltage Scaling, Enable, I2C interface, Light Load Efficiency, Load Disconnect, Output Discharge, Power Good, Pre-Bias Start-Up, Synchronous Rectification, UVLO Fixed Switch current limit (Typ) (A) 5.8 Switching frequency (Min) (kHz) 500 Switching frequency (Max) (kHz) 3100 Iq (Typ) (mA) 0.013 Iout (Max) (A) 2.5 Rating Catalog
Topology Buck-Boost Vin (Min) (V) 2.2 Vin (Max) (V) 5.5 Vout (Max) (V) 5.2 Vout (Min) (V) 1.8 Duty cycle (Max) (%) 100 Features Dynamic Voltage Scaling, Enable, I2C interface, Light Load Efficiency, Load Disconnect, Output Discharge, Power Good, Pre-Bias Start-Up, Synchronous Rectification, UVLO Fixed Switch current limit (Typ) (A) 5.8 Switching frequency (Min) (kHz) 500 Switching frequency (Max) (kHz) 3100 Iq (Typ) (mA) 0.013 Iout (Max) (A) 2.5 Rating Catalog
DSBGA (YFF) 15 0 mm² 2.295 x 1.384
  • Input voltage range: 2.2 V to 5.5 V
  • Output voltage range: 1.8 V to 5.2 V
    • I2C-configurable during operation and shutdown
    • VSEL pin to toggle between two output voltage presets
  • Output current
    • Up to 2.5 A for VI ≥ 2.5 V, VO = 3.3 V
    • Up to 2.5 A for VI ≥ 2.8 V, VO = 3.5 V
  • High efficiency over entire load range
    • Low 13-µA operating quiescent current
    • Automatic power save mode and forced PWM mode (I2C-configurable)
  • Peak current mode buck-boost architecture
    • Defined transitions between buck, buck-boost and boost operation
    • Forward and reverse current operation
    • Start-up into pre-biased outputs
  • Safety and robust operation features
    • Integrated soft start
    • Overtemperature and overvoltage protection
    • True load disconnect during shutdown
    • Forward and backward current limit
  • Two device options:
    • TPS63810: Pre-programmed output voltages (3.3 V, 3.45 V)
    • TPS63811: Program output voltages prior to start-up
  • Solution size of < 20 mm2 with only four external components
  • Input voltage range: 2.2 V to 5.5 V
  • Output voltage range: 1.8 V to 5.2 V
    • I2C-configurable during operation and shutdown
    • VSEL pin to toggle between two output voltage presets
  • Output current
    • Up to 2.5 A for VI ≥ 2.5 V, VO = 3.3 V
    • Up to 2.5 A for VI ≥ 2.8 V, VO = 3.5 V
  • High efficiency over entire load range
    • Low 13-µA operating quiescent current
    • Automatic power save mode and forced PWM mode (I2C-configurable)
  • Peak current mode buck-boost architecture
    • Defined transitions between buck, buck-boost and boost operation
    • Forward and reverse current operation
    • Start-up into pre-biased outputs
  • Safety and robust operation features
    • Integrated soft start
    • Overtemperature and overvoltage protection
    • True load disconnect during shutdown
    • Forward and backward current limit
  • Two device options:
    • TPS63810: Pre-programmed output voltages (3.3 V, 3.45 V)
    • TPS63811: Program output voltages prior to start-up
  • Solution size of < 20 mm2 with only four external components

The TPS63810 and TPS63811 are high efficiency, high output current buck-boost converters fully programmable through I2C. Depending on the input voltage, they automatically operate in boost, buck or in a novel 4-cycle buck-boost mode when the input voltage is approximately equal to the output voltage.

The transitions between modes happen at defined thresholds and avoid unwanted toggling within the modes to reduce output voltage ripple.

Two registers, accessible through I2C, set the output voltage, and a VSEL pin selects which output voltage register is active. Thus the devices can support dynamic voltage scaling. If the output voltage register is changed during operation or the VSEL pin is toggled, the device transits in a defined, programmable ramp-rate.

The TPS63810 and TPS63811 are high efficiency, high output current buck-boost converters fully programmable through I2C. Depending on the input voltage, they automatically operate in boost, buck or in a novel 4-cycle buck-boost mode when the input voltage is approximately equal to the output voltage.

The transitions between modes happen at defined thresholds and avoid unwanted toggling within the modes to reduce output voltage ripple.

Two registers, accessible through I2C, set the output voltage, and a VSEL pin selects which output voltage register is active. Thus the devices can support dynamic voltage scaling. If the output voltage register is changed during operation or the VSEL pin is toggled, the device transits in a defined, programmable ramp-rate.
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Technical documentation

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Type Title Date
* Data sheet TPS63810 and TPS63811 – 2.5-A Buck-Boost Converters with I2C Interface datasheet (Rev. C) PDF | HTML 20 Feb 2020
Application note Selecting a DC/DC Converter for Maximum Battery Life in Pulsed-Load Applications (Rev. A) 26 Jul 2021
Application note A Topical Index of TI Low-Power Buck-Boost Converter Application Notes (Rev. A) PDF | HTML 09 Jun 2021
Application note Layer Design for Reducing Radiated EMI of DC to DC Buck-Boost Converters (Rev. A) PDF | HTML 09 Jun 2021
Certificate TPS63811EVM EU Declaration of Conformity (DoC) 17 Apr 2020
EVM User's guide TPS6381xEVM User's Guide (Rev. A) 16 Oct 2019
Application note Improve Efficiency in TWS Earbuds with Buck-Boost Converter 18 Sep 2019
Application note Using Non-Inverting Buck-Boost Converter for Voltage Stabilization 01 Aug 2019
Application note Buck-boost Converter Battery Life Time Estimation for Wireless Network Cameras (Rev. A) 28 May 2019
Application note Buck-Boost Converters Solving Power Challenges in Optical Modules 13 May 2019
Application note Precise Delayed Start-up with Precise Threshold Enable-pin 15 Apr 2019
Application note Prevent Battery Overdischarge with Precise Threshold Enable Pin 02 Apr 2019
Application note Supercapacitor backup power supply with TPS63802 21 Jan 2019
Application note Basic Calculations of a 4 Switch Buck-Boost Power Stage (Rev. B) 09 Jul 2018

Design & development

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

Evaluation board

BOOSTXL-TECDRV — BoosterPack™ featuring TPS63810 for driving a TEC module

The BOOSXL-TECDRV BoosterPack™ allows users to evaluate the Texas Instruments TPS63810 buck-boost converter as a driver for a thermoelectric cooling (TEC) module. The TPS63810 is a high efficiency, high output current buck-boost converter programmable through I²C interface. The (...)
User guide: PDF | HTML
Not available on TI.com
Evaluation board

TPS63811EVM — TPS63811 high-efficiency, high output current, I²C controlled, buck-boost converter EVM

The TPS63811EVM is designed to help the users easily evaluate and test the operation and functionality of the TPS63811 buck-boost converter. The EVM operates from input voltage between 2.2 V and 5.5 V, and can output voltage from 1.825 V to 5 V, with output current up to 2.5 A in buck mode and up (...)
Not available on TI.com
Support software

TPS6381xEVM GUI Windows (Rev. B)

SLVC782B.ZIP (43396 KB)
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Support software

TPS6381xEVM GUI Linux (Rev. B)

SLVC783B.ZIP (39135 KB)
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Support software

TPS6381xEVM GUI Mac (Rev. B)

SLVC784B.ZIP (44305 KB)
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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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Calculation tool

Battery Lifetime Estimator (Rev. A)

SLVC808A.ZIP (1889 KB)
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Package Pins Download
DSBGA (YFF) 15 View options

Ordering & quality

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