Home Power management DC/DC switching regulators Buck-boost & inverting regulators Buck-boost, inverting & split-rail converters (integrated switch)

TPS630252

ACTIVE

4A switch Single-Inductor Buck-Boost Converter in WCSP

Product details

Topology Buck-Boost Vin (min) (V) 2.3 Vin (max) (V) 5.5 Vout (max) (V) 3.3 Vout (min) (V) 3.3 Duty cycle (max) (%) 100 Features Enable, Light Load Efficiency, Load Disconnect, Output discharge, Synchronous Rectification, UVLO Fixed Switch current limit (typ) (A) 4 Switching frequency (min) (kHz) 2500 Switching frequency (max) (kHz) 2500 Iq (typ) (mA) 0.035 Iout (max) (A) 2 Rating Catalog Operating temperature range (°C) -40 to 125 Type Converter Thermal resistance θJA (°C/W) 71.1
Topology Buck-Boost Vin (min) (V) 2.3 Vin (max) (V) 5.5 Vout (max) (V) 3.3 Vout (min) (V) 3.3 Duty cycle (max) (%) 100 Features Enable, Light Load Efficiency, Load Disconnect, Output discharge, Synchronous Rectification, UVLO Fixed Switch current limit (typ) (A) 4 Switching frequency (min) (kHz) 2500 Switching frequency (max) (kHz) 2500 Iq (typ) (mA) 0.035 Iout (max) (A) 2 Rating Catalog Operating temperature range (°C) -40 to 125 Type Converter Thermal resistance θJA (°C/W) 71.1
DSBGA (YFF) 20 3.96 mm² 1.8 x 2.2
  • 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
  • 2 A Continuous Output Current : VIN≥ 2.5 V,
    VOUT= 3.3 V
  • Adjustable and Fixed Output Voltage
  • Efficiency up to 95% in Buck or Boost Mode and
    up to 97% when VIN=VOUT
  • 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 1.766 mm × 2.086 mm, 20-pin WCSP and
    2.5 mm × 3 mm, 14-pin Hot Rod
  • 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
  • 2 A Continuous Output Current : VIN≥ 2.5 V,
    VOUT= 3.3 V
  • Adjustable and Fixed Output Voltage
  • Efficiency up to 95% in Buck or Boost Mode and
    up to 97% when VIN=VOUT
  • 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 1.766 mm × 2.086 mm, 20-pin WCSP and
    2.5 mm × 3 mm, 14-pin Hot Rod

The TPS63025x are 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 A. The TPS63025x 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 20-pin WCSP package measuring 1.766 mm × 2.086mm and 14-pin HotRod package measuring 2.5 mm × 3mm.

The TPS63025x are 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 A. The TPS63025x 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 20-pin WCSP package measuring 1.766 mm × 2.086mm and 14-pin HotRod package measuring 2.5 mm × 3mm.

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Technical documentation

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Type Title Date
* Data sheet High Current Single Inductor Buck-Boost Converter datasheet (Rev. B) 16 Jun 2014
Application note 4스위치 벅 부스트 전력 단계의 기본 계산 (Rev. C) PDF | HTML 02 Oct 2023
Application note Layer Design for Reducing Radiated EMI of DC to DC Buck-Boost Converters (Rev. A) PDF | HTML 09 Jun 2021
Application note Performing Accurate PFM Mode Efficiency Measurements (Rev. A) 11 Dec 2018
Application note Understanding Undervoltage Lockout in Power Devices (Rev. A) 19 Sep 2018
Application note Basic Calculations of a 4 Switch Buck-Boost Power Stage (Rev. B) 09 Jul 2018
User guide TPS63025xEVM-553 25 Apr 2014
Analog Design Journal IQ: What it is, what it isn’t, and how to use it 17 Jun 2011

Design & development

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Evaluation board

TPS630250EVM-553 — TPS630250 DSBGA evaluation module 4-A switch buck-boost regulator

The TPS63025xEVM-553 enables test and evaluation of the Texas Instruments’ TPS63025 device family, a 2.5MHz (typ.) fully integrated buck-boost converter.

The TPS63025x devices are high efficient, low quiescent current devices in buck-boost topology. They are suitable for applications where the input (...)

User guide: PDF
Not available on TI.com
Simulation model

TPS630252 Unencrypted PSpice Transient Model Package (Rev. A)

SLVMAJ0A.ZIP (85 KB) - PSpice Model
Calculation tool

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Supported products & hardware

Supported products & hardware

Products
Buck-boost, inverting & split-rail converters (integrated switch)
TPS63000 High efficiency Buck-Boost Converter with 1.8A Current Switches in 3x3 QFN TPS63000-Q1 Automotive 1.8V to 5.5V Input Range, 1.8A High Efficiency Buck/Boost Converter TPS63001 96% Buck-Boost Converter with 1.7A Current Switches, 3.3V fixed Output voltage in 3x3 QFN TPS63002 96% Buck-Boost Converter with 1.7A Current Switches, 5V fixed Output voltage in 3x3 QFN TPS63010 High Efficient Single Inductor Buck-Boost Converter with 2-A Switches TPS63011 High Efficient Single Inductor Buck-Boost Converter with 2-A Switches TPS63012 High Efficient Single Inductor Buck-Boost Converter with 2-A Switches TPS63020 High Efficiency Single Inductor Buck-Boost Converter with 4A Switch TPS63020-Q1 High Efficiency Automotive Single Inductor Buck-Boost Converter with 4A Switch TPS63021 High Efficiency Single Inductor Buck-Boost Converter with 4A Switch TPS63024 High Efficiency 1.5A Single Inductor Buck-Boost Converter TPS630241 High Efficiency 1.5A Single Inductor Buck-Boost Converter TPS630242 High Efficiency 1.5A Single Inductor Buck-Boost Converter TPS630250 4-A switch single-inductor buck-boost converter in 3.7 mm² DSBGA package TPS630251 4A switch Single-Inductor Buck-Boost Converter in WCSP TPS630252 4A switch Single-Inductor Buck-Boost Converter in WCSP TPS63027 High Efficiency 4.5A Switch Single-Inductor Buck-Boost Converter TPS63030 High Efficient Single Inductor Buck-Boost Converter with 1-A Switches TPS63031 High Efficient Single Inductor Buck-Boost Converter with 1-A Switches TPS63036 High Efficient Single Inductor Buck-Boost Converter with 1-A Switches TPS63050 TPS6305x Single Inductor Buck-Boost with 1-A Switches and Adjustable Soft Start TPS63051 Tiny Single Inductor Buck Boost Converter TPS63060 2.5V to 12V input voltage, 93% Efficient, 2.25A Switch Current Limit, Buck-Boost Converter TPS63060-EP HIGH INPUT VOLTAGE BUCK-BOOST CONVERTER WITH 2-A SWITCH CURRENT TPS63061 2.5V to 12V input voltage, 93% Efficient, 2.25A Switch Current Limit, Buck-Boost Converter TPS63070 Wide input voltage (2V-16V) buck-boost converter TPS63700 Adjustable, -15V Output Inverting DC/DC Converter in 3x3 QFN TPS63710 Low Noise, 1A Synchronous Inverting Buck Converter in 3x3 WSON Package TPS63802 2-A, high-efficient, 11-µA quiescent current buck-boost converter in QFN/DFN package TPS63805 2-A, high-efficient, 11-µA quiescent current buck-boost converter with tiny solution size TPS63806 2.5-A high-efficient buck-boost converter with optimized load step response in tiny WCSP TPS63807 2A,11-uA quiescent current buck-boost converter TPS63810 2.5-A high-efficient buck-boost converter with I²C interface for dynamic voltage scaling TPS63811 2.5-A high-efficient buck-boost converter with I²C interface for dynamic voltage scaling TPS63900 1.8-V to 5.5-V, 75-nA IQ buck-boost converter with input current limit and Dynamic Voltage Scaling
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