Inicio Gestión de la energía Convertidores de CA/CC y CC/CC (FET integrado)

TPS54140A

ACTIVO

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

Se encuentra disponible una versión más nueva de este producto

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Detalles del producto

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 1.5 Vin (min) (V) 3.5 Vin (max) (V) 42 Switching frequency (min) (kHz) 100 Switching frequency (max) (kHz) 2500 Features Enable, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Tracking, UVLO adjustable Control mode current mode Vout (min) (V) 0.8 Vout (max) (V) 39 Iq (typ) (µA) 116 Duty cycle (max) (%) 98
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 1.5 Vin (min) (V) 3.5 Vin (max) (V) 42 Switching frequency (min) (kHz) 100 Switching frequency (max) (kHz) 2500 Features Enable, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Tracking, UVLO adjustable Control mode current mode Vout (min) (V) 0.8 Vout (max) (V) 39 Iq (typ) (µA) 116 Duty cycle (max) (%) 98
HVSSOP (DGQ) 10 14.7 mm² 3 x 4.9 VSON (DRC) 10 9 mm² 3 x 3
  • 3.5-V to 42-V Input Voltage Range
  • 200-mΩ High-Side MOSFET
  • High Efficiency at Light Loads with a Pulse
    Skipping Eco-mode™
  • Tighter Enable Threshold than TPS54140 for
    More Accurate UVLO Voltage
  • Adjustable UVLO Voltage and Hysteresis
  • 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/Sequencing
  • UV and OV Power Good Output
  • 0.8-V Internal Voltage Reference
  • MSOP10 and 3-mm × 3-mm VSON-10 Package
    With PowerPAD™
  • Supported by WEBENCH® and SwitcherPro™
    Software Tool
  • 3.5-V to 42-V Input Voltage Range
  • 200-mΩ High-Side MOSFET
  • High Efficiency at Light Loads with a Pulse
    Skipping Eco-mode™
  • Tighter Enable Threshold than TPS54140 for
    More Accurate UVLO Voltage
  • Adjustable UVLO Voltage and Hysteresis
  • 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/Sequencing
  • UV and OV Power Good Output
  • 0.8-V Internal Voltage Reference
  • MSOP10 and 3-mm × 3-mm VSON-10 Package
    With PowerPAD™
  • Supported by WEBENCH® and SwitcherPro™
    Software Tool

The TPS54140A 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, 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/tracking. An open drain power good signal indicates the output is within 94% to 107% of its nominal voltage.

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

The TPS54140A 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, 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/tracking. An open drain power good signal indicates the output is within 94% to 107% of its nominal voltage.

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

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Documentación técnica

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Tipo Título Fecha
* Data sheet TPS54140A 1.5-A, 42-V Step-Down DC/DC Converter with Eco-mode™ datasheet (Rev. C) PDF | HTML 28 oct 2015
Selection guide Power Management Guide 2018 (Rev. R) 25 jun 2018
Application note Understanding Eco-mode(TM) Operation 05 dic 2016
Application note Design Considerations for DC-DC Converters in Fast-Input Slew Rate Applications 05 mar 2015
Application note Methods to Improve Low Dropout Operation with the TPS54240 and TPS54260 (Rev. A) 06 nov 2013
Application note Differences between the TPS54x40, TPS54x60 and the TPS54x40A, TPS54x60A 17 abr 2013
Application note Level Shifting Control for an Inverting Buck-boost 10 oct 2012

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
Modelo de simulación

TPS54140 PSpice Average Model

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

TPS54140 PSpice Transient Model (Rev. A)

SLIM040A.ZIP (66 KB) - PSpice Model
Modelo de simulación

TPS54140 TINA-TI Average Reference Design

SLVM549.TSC (623 KB) - TINA-TI Reference Design
Modelo de simulación

TPS54140 TINA-TI Average Spice Model

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

TPS54140 TINA-TI Steady State Reference Design

SLIM280.TSC (380 KB) - TINA-TI Reference Design
Modelo de simulación

TPS54140 TINA-TI Transient Spice Model

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

TPS54140 Unencrypted PSpice Average Model

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

TPS54140 Unencrypted PSpice Transient Model

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

SLVC432 TPS54x40 and TPS54x60 Buck Design Spreadsheet

Productos y hardware compatibles

Productos y hardware compatibles

Productos
Convertidores de CA/CC y CC/CC (FET integrado)
TPS54040 Convertidor reductor con entrada de 3.5 V a 42 V y 0.5 A con Eco-Mode TPS54040A Convertidor reductor con entrada de 3.5 V a 42 V y 0.5 A con Eco-Mode TPS54060 Convertidor reductor con entrada de 3.5 V a 60 V y 0.5 A con Eco-Mode TPS54060-EP Convertidor CC/CC reductor de 60 V y 0.5 A TPS54060-EP con Eco-Mode TPS54060A Convertidor reductor con entrada de 3.5 V a 60 V y 0.5 A con Eco-Mode TPS54140 Convertidor reductor con entrada de 3.5 V a 42 V y 1.5 A con Eco-Mode TPS54140A Convertidor reductor con entrada de 3.5 V a 42 V y 1.5 A con Eco-Mode TPS54160 Convertidor reductor con entrada de 3.5 V a 60 V y 1.5 A con Eco-Mode TPS54160A Convertidor reductor con entrada de 3.5 V a 60 V y 1.5 A con Eco-Mode TPS54240 Convertidor reductor con entrada de 3.5 V a 42V y 2.5A con Eco-Mode TPS54260 Convertidor reductor con entrada de 3.5 V a 60 V y 2.5A con Eco-Mode
Diseños de referencia

TIDA-010025 — Diseño de referencia de inversor trifásico para unidades de 200 VCA a 480 VCA con controladores de p

This reference design realizes a reinforced isolated three-phase inverter subsystem using isolated IGBT gate drivers and isolated current/voltage sensors. The UCC23513 gate driver used has a 6-pin wide body package with optical LED emulated inputs which enables its use as pin-to-pin replacement to (...)
Design guide: PDF
Esquema: PDF
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
HVSSOP (DGQ) 10 Ultra Librarian
VSON (DRC) 10 Ultra Librarian

Pedidos y calidad

Información incluida:
  • RoHS
  • REACH
  • Marcado del dispositivo
  • Acabado de plomo/material de la bola
  • Clasificación de nivel de sensibilidad a la humedad (MSL) / reflujo máximo
  • Estimaciones de tiempo medio entre fallas (MTBF)/fallas en el tiempo (FIT)
  • Contenido del material
  • Resumen de calificaciones
  • Monitoreo continuo de confiabilidad
Información incluida:
  • Lugar de fabricación
  • Lugar de ensamblaje

Soporte y capacitación

Foros de TI E2E™ con asistencia técnica de los ingenieros de TI

El contenido lo proporcionan “tal como está” TI y los colaboradores de la comunidad y no constituye especificaciones de TI. Consulte los términos de uso.

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