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TPS54140

ACTIVO

Convertidor reductor de 1.5 A con entrada de 3.5 V a 42 V y Eco-Mode

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Detalles del producto

Rating Catalog Topology Buck Iout (max) (A) 1.5 Vin (max) (V) 42 Vin (min) (V) 3.5 Vout (max) (V) 39 Vout (min) (V) 0.8 Features Enable, Frequency synchronization, Light-load efficiency, Power good, Tracking, UVLO adjustable Control mode current mode Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.000116 Duty cycle (max) (%) 98
Rating Catalog Topology Buck Iout (max) (A) 1.5 Vin (max) (V) 42 Vin (min) (V) 3.5 Vout (max) (V) 39 Vout (min) (V) 0.8 Features Enable, Frequency synchronization, Light-load efficiency, Power good, Tracking, UVLO adjustable Control mode current mode Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.000116 Duty cycle (max) (%) 98
HVSSOP (DGQ) 10 14.7 mm² (3 mm × 4.9 mm)
  • 3.5- to 42-V Input Voltage Range
  • 200-mΩ High-Side MOSFET
  • High Efficiency at Light Loads with a
    Pulse Skipping Eco-mode™
  • 116-µA Operating Quiescent Current
  • 1.3-µA Shutdown Current
  • 100-kHz to 2.5-MHz Switching Frequency
  • Synchronizes to External Clock
  • Adjustable Slow Start and Sequencing
  • UV and OV Power-Good Output
  • Adjustable UVLO Voltage and Hysteresis
  • 0.8-V Internal Voltage Reference
  • MSOP10 Package With PowerPAD
  • Supported by WEBENCH® Software Tool
    (www.TI.com/WEBENCH)
  • 3.5- to 42-V Input Voltage Range
  • 200-mΩ High-Side MOSFET
  • High Efficiency at Light Loads with a
    Pulse Skipping Eco-mode™
  • 116-µA Operating Quiescent Current
  • 1.3-µA Shutdown Current
  • 100-kHz to 2.5-MHz Switching Frequency
  • Synchronizes to External Clock
  • Adjustable Slow Start and Sequencing
  • UV and OV Power-Good Output
  • Adjustable UVLO Voltage and Hysteresis
  • 0.8-V Internal Voltage Reference
  • MSOP10 Package With PowerPAD
  • Supported by WEBENCH® Software Tool
    (www.TI.com/WEBENCH)

The TPS54140 device is a 42-V, 1.5-A, step-down regulator with an integrated high-side MOSFET. Current mode control provides simple external compensation and flexible component selection. A low-ripple pulse-skip mode reduces the no load, regulated output-supply current to 116 µA. Using the enable pin, the shutdown supply current is reduced to 1.3 µA.

Undervoltage lockout is internally set at 2.5 V, but can be increased using the enable pin. The output-voltage startup ramp is controlled by the slow-start pin that can also be configured for sequencing and tracking. An open-drain power-good signal indicates the output is within 94% to 107% of the nominal voltage.

A wide switching frequency range allows efficiency and external component size to be optimized. Frequency foldback and thermal shutdown protects the device during an overload condition.

The TPS54140 device is available in a 10-pin thermally enhanced MSOP PowerPAD package.

The TPS54140 device is a 42-V, 1.5-A, step-down regulator with an integrated high-side MOSFET. Current mode control provides simple external compensation and flexible component selection. A low-ripple pulse-skip mode reduces the no load, regulated output-supply current to 116 µA. Using the enable pin, the shutdown supply current is reduced to 1.3 µA.

Undervoltage lockout is internally set at 2.5 V, but can be increased using the enable pin. The output-voltage startup ramp is controlled by the slow-start pin that can also be configured for sequencing and tracking. An open-drain power-good signal indicates the output is within 94% to 107% of the nominal voltage.

A wide switching frequency range allows efficiency and external component size to be optimized. Frequency foldback and thermal shutdown protects the device during an overload condition.

The TPS54140 device is available in a 10-pin thermally enhanced MSOP PowerPAD package.

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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 TPS54140 1.5-A, 42-V Step-Down DC-DC Converter With Eco-mode™ datasheet (Rev. C) PDF | HTML 14/11/2014
Nota sobre la aplicación Understanding Eco-mode(TM) Operation 5/12/2016
Nota sobre la aplicación Design Considerations for DC-DC Converters in Fast-Input Slew Rate Applications 5/03/2015
Nota sobre la aplicación Differences between the TPS54x40, TPS54x60 and the TPS54x40A, TPS54x60A 17/04/2013
Nota sobre la aplicación Create an Inverting Power Supply from a Step-Down Regulator (Rev. B) 26/10/2012
Nota sobre la aplicación Level Shifting Control for an Inverting Buck-boost 10/10/2012
EVM User's guide TPS54140EVM-429 1.5 A, SWIFT Regulator Evaluation Module 19/03/2008

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

TPS54140EVM-429 — Módulo de evaluación de 1.5 A, salida de 3.3 V, entrada de 42 V TPS54140

The TPS54140EVM-429 evaluation module is designed to demonstrate the small printed-circuit-board areas that may be achieved when designing with the TPS54140 regulator. The TPS54140 dc/dc converter is designed to provide up to a 1.5 A output from an input voltage source of 3.5 V to 42 V. Rated (...)
Guía del usuario: PDF
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En inventario
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Modelo de simulación

TPS54140 PSpice Average Model

SLVM545.ZIP (232 KB) - Modelo PSpice
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Modelo de simulación

TPS54140 PSpice Transient Model (Rev. A)

SLIM040 (90 KB) - Modelo PSpice
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Modelo de simulación

TPS54140 TINA-TI Average Reference Design

SLVM549.TSC (623 KB) - Diseño de referencia TINA-TI
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Modelo de simulación

TPS54140 TINA-TI Average Spice Model

SLVM548.ZIP (7 KB) - Modelo TINA-TI Spice
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Modelo de simulación

TPS54140 TINA-TI Steady State Reference Design

SLIM280.TSC (380 KB) - Diseño de referencia TINA-TI
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Modelo de simulación

TPS54140 TINA-TI Transient Spice Model

SLIM279.ZIP (68 KB) - Modelo TINA-TI Spice
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Modelo de simulación

TPS54140 Unencrypted PSpice Average Model

SLVMD09.ZIP (1 KB) - Modelo PSpice
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Modelo de simulación

TPS54140 Unencrypted PSpice Transient Model

SLVMCZ7.ZIP (8 KB) - Modelo PSpice
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Herramienta de cálculo

SLVC432 — TPS54x40 and TPS54x60 Buck Design Spreadsheet

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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 (...)

Productos y hardware compatibles
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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Encapsulado Pines Símbolos CAD, huellas y modelos 3D
HVSSOP (DGQ) 10 Ultra Librarian

Pedidos y calidad

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Soporte y capacitación

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