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TPS54231

ACTIVO

Convertidor reductor de 570 kHz, entrada de 3.5 V a 28 V, 2 A, con Eco-Mode™

Detalles del producto

Rating Catalog Topology Buck Iout (max) (A) 2 Vin (max) (V) 28 Vin (min) (V) 3.5 Vout (max) (V) 25 Vout (min) (V) 0.8 Features Adjustable soft start, Enable, Light-load efficiency, UVLO adjustable Control mode current mode Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.000075 Duty cycle (max) (%) 90
Rating Catalog Topology Buck Iout (max) (A) 2 Vin (max) (V) 28 Vin (min) (V) 3.5 Vout (max) (V) 25 Vout (min) (V) 0.8 Features Adjustable soft start, Enable, Light-load efficiency, UVLO adjustable Control mode current mode Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.000075 Duty cycle (max) (%) 90
SOIC (D) 8 29.4 mm² (4.9 mm × 6 mm)
  • 3.5- to 28-V Input Voltage Range
  • Adjustable Output Voltage Down to 0.8 V
  • Integrated 80-mΩ High-Side MOSFET
    Supports up to 2 A Continuous Output
    Current
  • High Efficiency at Light Loads with a
    Pulse Skipping Eco-mode™
  • Fixed 570-kHz Switching Frequency
  • Typical 1-µA Shutdown Quiescent
    Current
  • Adjustable Slow-Start Limits Inrush
    Currents
  • Programmable UVLO Threshold
  • Overvoltage Transient Protection
  • Cycle-by-Cycle Current Limit, Frequency
    Fold Back and Thermal Shutdown Protection
  • Available in Easy-to-Use SOIC8 Package
  • Supported by WEBENCH® Software Tool
    (www.TI.com/WEBENCH)
  • APPLICATIONS
    • Consumer Applications such as Set-Top Boxes,
      CPE Equipment, LCD Displays, Peripherals, and
      Battery Chargers
    • Industrial and Car Audio Power Supplies
    • 5-V, 12-V and 24-V Distributed Power Systems

WEBENCH Is a trademark of Texas Instruments.
All other trademarks are the property of their respective owners

  • 3.5- to 28-V Input Voltage Range
  • Adjustable Output Voltage Down to 0.8 V
  • Integrated 80-mΩ High-Side MOSFET
    Supports up to 2 A Continuous Output
    Current
  • High Efficiency at Light Loads with a
    Pulse Skipping Eco-mode™
  • Fixed 570-kHz Switching Frequency
  • Typical 1-µA Shutdown Quiescent
    Current
  • Adjustable Slow-Start Limits Inrush
    Currents
  • Programmable UVLO Threshold
  • Overvoltage Transient Protection
  • Cycle-by-Cycle Current Limit, Frequency
    Fold Back and Thermal Shutdown Protection
  • Available in Easy-to-Use SOIC8 Package
  • Supported by WEBENCH® Software Tool
    (www.TI.com/WEBENCH)
  • APPLICATIONS
    • Consumer Applications such as Set-Top Boxes,
      CPE Equipment, LCD Displays, Peripherals, and
      Battery Chargers
    • Industrial and Car Audio Power Supplies
    • 5-V, 12-V and 24-V Distributed Power Systems

WEBENCH Is a trademark of Texas Instruments.
All other trademarks are the property of their respective owners

The TPS54231 device is a 2-V, 2-A non-synchronous buck converter that integrates a low RDS(on) high-side MOSFET. To increase efficiency at light loads, a pulse skipping Eco-mode™ feature is automatically activated. Furthermore, the 1-µA shutdown supply current allows the device to be used in battery powered applications. Current mode control with internal slope compensation simplifies the external compensation calculations and reduces component count while allowing the use of ceramic output capacitors. A resistor divider programs the hysteresis of the input undervoltage lockout. An overvoltage transient protection circuit limits voltage overshoots during startup and transient conditions. A cycle-by-cycle current limit scheme, frequency fold back and thermal shutdown protect the device and the load in the event of an overload condition. The TPS54231 device is available in an 8-pin SOIC package that has been internally optimized to improve thermal performance.

The TPS54231 device is a 2-V, 2-A non-synchronous buck converter that integrates a low RDS(on) high-side MOSFET. To increase efficiency at light loads, a pulse skipping Eco-mode™ feature is automatically activated. Furthermore, the 1-µA shutdown supply current allows the device to be used in battery powered applications. Current mode control with internal slope compensation simplifies the external compensation calculations and reduces component count while allowing the use of ceramic output capacitors. A resistor divider programs the hysteresis of the input undervoltage lockout. An overvoltage transient protection circuit limits voltage overshoots during startup and transient conditions. A cycle-by-cycle current limit scheme, frequency fold back and thermal shutdown protect the device and the load in the event of an overload condition. The TPS54231 device is available in an 8-pin SOIC package that has been internally optimized to improve thermal performance.

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Documentación técnica

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Documentación principal Tipo Título Opciones de formato Descargar la versión más reciente en inglés Fecha
* Hoja de datos TPS54231 2-A, 28-V Input, Step-Down DC-DC Converter With Eco-mode™ datasheet (Rev. D) PDF | HTML 24/10/2014
Nota sobre la aplicación Low Dropout Operation in a Buck Converter (Rev. A) 1/04/2019
Guía de selección Power Management Guide 2018 (Rev. R) 25/06/2018
Nota sobre la aplicación 800VA Pure Sine Wave Inverter's Reference Design (Rev. A) PDF | HTML 1/08/2017
Nota sobre la aplicación Using TPS54335A to Create an Inverting Power Supply (Rev. A) 19/07/2017
Nota sobre la aplicación Understanding Eco-mode(TM) Operation 5/12/2016
Nota sobre la aplicación Create an Inverting Power Supply from a Step-Down Regulator (Rev. B) 26/10/2012
Nota sobre la aplicación Designing Type III Compensation for Current Mode Step-Down Converters (Rev. A) 15/09/2010

Diseño y desarrollo

Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.

Placa de evaluación

TPS54231EVM-372 — Módulo de evaluación de 2 A, salida de 3.3 V, entrada de 28 V TPS54231

The TPS54231EVM-372 is a fully assembled and tested circuit for evaluating the TPS54231 synchronous step-down SWIFT™ converter. The EVM converts a 7-V to 28-V input voltage to a regulated 3.3-V output voltage that delivers up to 2 A. The switching frequency is internally set at a nominal 570 (...)

Guía del usuario: PDF | HTML
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Modelo de simulación

TPS54231 TINA-TI Transient Reference Design

SLUM343.TSC (152 KB) - Diseño de referencia TINA-TI
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Modelo de simulación

TPS54231 TINA-TI Transient Spice Model

SLUM342.ZIP (18 KB) - Modelo TINA-TI Spice
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Modelo de simulación

TPS54231 Unencrypted PSpice Transient Model Package (Rev. A)

SLUM255A.ZIP (40 KB) - Modelo PSpice
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Herramienta de cálculo

SWIFTINV-CALC — SWIFT™ Converter Inverting Buck/Boost Calculator

The SWIFTINV-CALC Excel sheet is a complementary worksheet to the SLVA317 application note. The worksheet is used to calculate the external components needed to create a negative output voltage from a positive input voltage. The tool features several families of wide input voltage, current-mode (...)

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Herramienta de cálculo

SWIFTPOSNEG-CALC — TPS54160 Pos/Neg Calculation Utility Download

The SWIFTPosNeg-CALC Excel sheet is a complementary worksheet to the SLVA369 application note.

This worksheet is used to calculate the external components needed to create a dual output (i.e. positive and negative) power supply using a step-down switching regulator and catalog off the shelf coupled (...)

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Diseño de referencia

TIDA-010055 — Diseño de referencia de arquitectura de alimentación no aislada con diagnóstico para módulos de relé

Este diseño de referencia muestra las arquitecturas de fuente de alimentación no aisladas para relés de protección con entrada/salida analógica y módulos de comunicación generados a partir de una entrada de CC de 5, 12 o 24 V. Para generar las fuentes de alimentación, el diseño utiliza (...)
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Pedidos y calidad

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