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

TPS63802

ACTIVE

2-A, high-efficient, 11-µA quiescent current buck-boost converter in QFN/DFN package

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Data sheet

TPS63802

ACTIVE
Data sheet Order now

Product details

Topology Buck-Boost Vin (Min) (V) 1.3 Vin (Max) (V) 5.5 Vout (Max) (V) 5.2 Vout (Min) (V) 1.8 Duty cycle (Max) (%) 100 Features Enable, Light Load Efficiency, Load Disconnect, Power Good, Pre-Bias Start-Up, Synchronous Rectification, UVLO Fixed Switch current limit (Typ) (A) 5 Switching frequency (Min) (kHz) 500 Switching frequency (Max) (kHz) 3100 Iq (Typ) (mA) 0.011 Iout (Max) (A) 2 Rating Catalog
Topology Buck-Boost Vin (Min) (V) 1.3 Vin (Max) (V) 5.5 Vout (Max) (V) 5.2 Vout (Min) (V) 1.8 Duty cycle (Max) (%) 100 Features Enable, Light Load Efficiency, Load Disconnect, Power Good, Pre-Bias Start-Up, Synchronous Rectification, UVLO Fixed Switch current limit (Typ) (A) 5 Switching frequency (Min) (kHz) 500 Switching frequency (Max) (kHz) 3100 Iq (Typ) (mA) 0.011 Iout (Max) (A) 2 Rating Catalog
VSON-HR (DLA) 10 6 mm² 3 x 2
  • Input voltage range: 1.3 V to 5.5 V
    • Device input voltage > 1.8 V for start-up
  • Output voltage range: 1.8 V to 5.2 V (adjustable)
  • 2-A output current for VI ≥ 2.3 V, VO = 3.3 V
  • High efficiency over the entire load range
    • 11-µA operating quiescent current
    • Power save mode and mode selection for forced PWM-mode
  • Peak current buck-boost mode architecture
    • Defined transition points between buck, buck-boost, and boost operation modes
    • Forward and reverse current operation
    • Start-up into pre-biased outputs
  • Safety and robust operation features
    • Integrated soft start
    • Overtemperature- and overvoltage-protection
    • True shutdown function with load disconnect
    • Forward and backward current limit
  • Small solution size of 21.5 mm2
    • Tiny SON/DFN package (similar to QFN)
    • Small 0.47-µH inductor
    • Works with a 22-µF minimum output capacitor
  • Create a custom design using the TPS63802 with the WEBENCH Power Designer
  • Input voltage range: 1.3 V to 5.5 V
    • Device input voltage > 1.8 V for start-up
  • Output voltage range: 1.8 V to 5.2 V (adjustable)
  • 2-A output current for VI ≥ 2.3 V, VO = 3.3 V
  • High efficiency over the entire load range
    • 11-µA operating quiescent current
    • Power save mode and mode selection for forced PWM-mode
  • Peak current buck-boost mode architecture
    • Defined transition points between buck, buck-boost, and boost operation modes
    • Forward and reverse current operation
    • Start-up into pre-biased outputs
  • Safety and robust operation features
    • Integrated soft start
    • Overtemperature- and overvoltage-protection
    • True shutdown function with load disconnect
    • Forward and backward current limit
  • Small solution size of 21.5 mm2
    • Tiny SON/DFN package (similar to QFN)
    • Small 0.47-µH inductor
    • Works with a 22-µF minimum output capacitor
  • Create a custom design using the TPS63802 with the WEBENCH Power Designer

The TPS63802 is a high efficiency, high output current buck-boost converter. Depending on the input voltage, it automatically operates 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. The device output voltages are individually set by a resistive divider within a wide output voltage range. An 11-µA quiescent current enables the highest efficiency for little to no-load conditions.

The TPS63802 is a high efficiency, high output current buck-boost converter. Depending on the input voltage, it automatically operates 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. The device output voltages are individually set by a resistive divider within a wide output voltage range. An 11-µA quiescent current enables the highest efficiency for little to no-load conditions.
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Technical documentation

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Type Title Date
* Data sheet TPS63802 2-A, High-efficient, Low IQ Buck-boost Converter in DFN Package datasheet (Rev. D) PDF | HTML 04 Jan 2021
Technical article Effective ways to implement backup power from supercapacitors 02 Nov 2021
Design guide TEC Driver Reference Design for 3.3-V Inputs (Rev. A) 06 Aug 2021
Application note Different Methods to Drive LEDs Using TPS63XXX Buck-Boost Converters (Rev. D) 04 Aug 2021
Application note Supercapacitor Backup Power Supply w/ Current Limit for Smart Electricity Meter (Rev. A) 03 Aug 2021
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
User guide TPS63802HDKEVM - Hardware Development Kit (Rev. A) 09 Jun 2021
Technical article Is there a universal tool for DC/DC voltage conversion? 30 Sep 2019
User guide TPS63802EVM (Rev. B) 24 Sep 2019
Application note Improving Load Transient Response for Controlled Loads 12 Sep 2019
Application note Using Non-Inverting Buck-Boost Converter for Voltage Stabilization 01 Aug 2019
Technical article Deciphering low Iq: Using WEBENCH® to design near 100% duty-cycle for ultra-low power applications 15 Jul 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 Selecting the right DC/DC converter for maximum battery life 08 Feb 2019
Technical article How to prevent battery over discharge by using a precise threshold voltage enable pin 31 Jan 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

TPS63802EVM — TPS63802 high current, high efficiency buck boost converter evaluation module

The TPS63802EVM is designed to help the users easily evaluate and test the operation and functionality of the TPS63802 Buck-Boost Converter. The EVM operates from 1.3V to 5.5V input voltage. Output currents can go up to 2A in buck mode and boost mode. the User can easily evaluate the different (...)
User guide: PDF
Not available on TI.com
Evaluation board

TPS63802HDKEVM — TPS63802HDKEVM - Hardware Development Kit

The TPS63802HDKEVM is a universal development tool designed to help the users easily and quickly evaluate and test the most common buck-boost converter use-cases. The use-cases include backup power, input current limit, LED driver, digital voltage scaling, bypass mode and precise enable. The user (...)

User guide: PDF
Not available on TI.com
Support software

TIDA-050017 TEC Driver Software Example

TIDCFU0.ZIP (603 KB)
Download
Simulation model

TPS63802 Unencrypted PSpice Transient Model Package (Rev. C)

SLVMCX1C.ZIP (50 KB) - PSpice Model
Download
Calculation tool

Battery Lifetime Estimator (Rev. A)

SLVC808A.ZIP (1889 KB)
Download
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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Reference designs

TIDA-010224 — Low-power wireless camera reference design for extended battery life

This reference design provides a solution for a battery-operated wireless camera by combining industry-leading image processing, connectivity, sensor and power. High-efficiency power converters along with optimized system architecture help to increase battery life. The image
processor with a (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-050017 — TEC driver reference design for 3.3V inputs

Many electronic components require their temperature to be regulated for best performance and for longer operating life times. Precise temperature control down to 0.1°C is critical for certain applications such as laser diodes used in optical modules, where even a 1°C change in temperature (...)
Design guide: PDF
Schematic: PDF
Reference designs

PMP30693 — Supercapacitor backup power supply with current limit and active cell balancing reference design

This reference design automatically provides a back-up voltage during a power interruption. It manages the charging of supercapitors and provides reverse blocking protection. The maximum supercapacitor charging current and voltage can be adjusted. When the input voltage fails a buck-boost (...)
Test report: PDF
Schematic: PDF
Reference designs

TIDA-010043 — Efficient, high-current, linear LED driver reference design for SpO2 and other medical applications

This reference design provides a protected, efficient (headroom-controlled), high-current (up to 1.5 A), linear (accurate and fast) light-emitting diode (LED) driver reference design to enable peripheral capillary oxygen saturation (SpO2) and other medical applications. A typical SpO2 application (...)
Design guide: PDF
Schematic: PDF
Package Pins Download
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