TPS63031

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High Efficient Single Inductor Buck-Boost Converter with 1-A Switches

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Product details

Parameters

Topology Buck-Boost Vin (Min) (V) 1.8 Vin (Max) (V) 5.5 Vout (Max) (V) 3.3 Vout (Min) (V) 3.3 Duty cycle (Max) (%) 100 Features Enable, Frequency Synchronization, Light Load Efficiency, Load Disconnect, Synchronous Rectification, UVLO Fixed Switch current limit (Typ) (A) 1 Switching frequency (Min) (kHz) 2200 Switching frequency (Max) (kHz) 2600 Iq (Typ) (mA) 0.025 Rating Catalog Iout (Max) (A) 0.4 Operating temperature range (C) -40 to 125 open-in-new Find other Buck-boost, inverting & split-rail converters (integrated switch)

Package | Pins | Size

WSON (DSK) 10 6 mm² 2.5 x 2.5 open-in-new Find other Buck-boost, inverting & split-rail converters (integrated switch)

Features

  • Input voltage range: 1.8 V to 5.5 V
  • Fixed and adjustable output voltage options from 1.2 V to 5.5 V
  • Up to 96% efficiency
  • 800-mA Output current at 3.3 V in step-down mode (VIN = 3.6 V to 5.5 V)
  • Up to 500-mA output current at 3.3 V in boost mode (VIN > 2.4 V)
  • Automatic transition between step-down and boost mode
  • Device quiescent current less than 50 µA
  • Power-save mode for improved efficiency at low-output power
  • Forced fixed frequency operation and synchronization possible
  • Load disconnect during shutdown
  • Overtemperature protection
  • Available in a small 2.5-mm × 2.5-mm 10-pin VSON package (QFN)

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Description

The TPS6303x devices provide a power supply solution for products powered by either a two-cell or three-cell alkaline, NiCd or NiMH battery, or a one-cell Li-ion or Li-polymer battery. Output currents can go as high as 600 mA while using a single-cell Li-ion or Li-polymer battery, and discharge it down to 2.5 V or lower. The buck-boost converter is based on a fixed-frequency, pulse width modulation (PWM) controller using synchronous rectification to obtain maximum efficiency. At low-load currents, the converter enters power-save mode to maintain high efficiency over a wide load current range. The power-save mode can be disabled, forcing the converter to operate at a fixed switching frequency. The maximum average current in the switches is limited to a typical value of 1000 mA. 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 TPS6303x devices operate over a free air temperature range of –40°C to 85°C. The devices are packaged in a 10-pin VSON package measuring 2.5-mm × 2.5-mm (DSK).

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Technical documentation

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Type Title Date
* Datasheet TPS6303x High Efficiency Single Inductor Buck-Boost Converter With 1-A Switches datasheet (Rev. D) Mar. 30, 2020
Application notes Layer Design for Reducing Radiated EMI of DC to DC Buck-Boost Converters Apr. 22, 2020
Application notes Performing Accurate PFM Mode Efficiency Measurements (Rev. A) Dec. 11, 2018
Application notes Understanding Undervoltage Lockout in Power Devices (Rev. A) Sep. 19, 2018
Application notes QFN and SON PCB Attachment (Rev. B) Aug. 24, 2018
Application notes Basic Calculations of a 4 Switch Buck-Boost Power Stage (Rev. B) Jul. 09, 2018
Selection guides Power Management Guide 2018 (Rev. R) Jun. 25, 2018
White papers Power Management Solutions for Ultra-Low-Power 16-Bit MSP430 MCUs (Rev. D) Mar. 28, 2012
Application notes IQ: What it is, what it isn’t, and how to use it Jun. 17, 2011
Application notes Minimizing Ringing at the Switch Node of a Boost Converter Sep. 15, 2006

Design & development

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Design tools & simulation

SIMULATION MODELS Download
SLVMBA5A.ZIP (63 KB) - PSpice Model
SIMULATION TOOLS 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 TOOLS Download
SLVC808.ZIP (2169 KB)

Reference designs

REFERENCE DESIGNS Download
MSP430FR4133 Microcontroller Air Quality Sensor Reference Design
TIDM-AIRQUALITYSENSOR In this TI Design reference design, a simple air quality monitor is created and implemented using the particulate matter 2.5 level. This design uses the TI MSP430FR4133 microcontroller (MCU) in tandem with the Sharp™ DN7C3CA006 PM2.5 sensor. The  ultra-low-power centric design of the (...)
document-generic Schematic document-generic User guide

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SON (DSK) 10 View options

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