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

TPS54040A

ACTIVO

Convertidor reductor con entrada de 3.5 V a 42 V y 0.5 A con Eco-Mode

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Misma funcionalidad con diferente configuración de pines que el dispositivo comparado
LMR54406 ACTIVO Convertidor de potencia SIMPLE SWITCHER® con entrada de 4 V a 36 V, 0.6 A, síncrono reductor e IQ de Smaller footprint, lower quiescent current, FPWM and PFM options.

Detalles del producto

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 0.5 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) 0.5 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 TPS54040
    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
  • Available in MSOP-10 and VSON-10 Packages
  • 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 TPS54040
    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
  • Available in MSOP-10 and VSON-10 Packages
  • Supported by WEBENCH® and SwitcherPro™
    Software Tool

The TPS54040A device is a 42 V, 0.5 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 input supply current to 116 µA. Using the enable pin, shutdown supply current is nominally 1.3 µA when the enable pin is low.

Under voltage 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 or tracking. An open drain power good signal indicates when 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 TPS54040A device is a 42 V, 0.5 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 input supply current to 116 µA. Using the enable pin, shutdown supply current is nominally 1.3 µA when the enable pin is low.

Under voltage 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 or tracking. An open drain power good signal indicates when 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 TPS54040A 0.5-A, 42-V Step-Down DC-DC Converter With Eco-Mode™ datasheet (Rev. B) PDF | HTML 15 ene 2016
Selection guide Power Management Guide 2018 (Rev. R) 25 jun 2018
Technical article Designing an EMC-compliant interface to motor position encoders – Part 5 PDF | HTML 10 nov 2015
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

TPS54040EVM-456 — Módulo de evaluación de 0.5 A, salida de 5 V, entrada de 42 V TPS54040

The TPS54040EVM-456 evaluation module is designed to demonstrate the small printed-circuit-board areas that can be achieved when designing with the TPS54040 regulator. The TPS54040 dc/dc converter is designed to provide up to a 0.5-A output from an input voltage source of 3.5 V to 42 V. Rated (...)
Guía del usuario: PDF
Modelo de simulación

TPS54040 PSpice Transient Model

SLIM069.ZIP (66 KB) - PSpice Model
Modelo de simulación

TPS54040 TINA-TI Transient Reference Design

SLIM278.TSC (482 KB) - TINA-TI Reference Design
Modelo de simulación

TPS54040 TINA-TI Transient Spice Model

SLIM277.ZIP (68 KB) - TINA-TI Spice Model
Modelo de simulación

TPS54040A Unencrypted PSpice Average Model

SLVMCU5.ZIP (1 KB) - PSpice Model
Modelo de simulación

TPS54040A Unencrypted PSpice Average Model Package (Rev. A)

SLVM914A.ZIP (96 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-00172 — Diseño de referencia para una interfaz a un codificador de posición con EnDat 2.2

This reference design implements a hardware interface based on the HEIDENHAIN EnDat 2.2 standard for position or rotary encoders. The building blocks include the power supply for the encoder with innovative smart eFuse technology and robust half-duplex RS-485 transceivers including line termination (...)
Design guide: PDF
Esquema: PDF
Diseños de referencia

TIDA-00176 — Diseño de referencia de interfaz para codificadores Sin/Cos con interpolación de posición de alta re

The TIDA-00176 reference design is an EMC compliant industrial interface to Sin/Cos position encoders. Applications include industrial drives, which require accurate speed and position control.
The design utilizes a 16-bit dual sample ADC with drop-in compatible 14- or 12-bit versions available, (...)
Design guide: PDF
Esquema: PDF
Diseños de referencia

TIDA-00175 — Diseño de referencia de interfaz con un codificador de posición BiSS de 5 V

This reference design implements a hardware interface based on the BiSS standard for position or rotary encoders. It supports both BiSS point-to-point and BiSS bus configurations. The building blocks include the power supply for a 5-V BiSS encoder with innovative smart eFuse technology and robust (...)
Design guide: PDF
Esquema: PDF
Diseños de referencia

TIDA-01574 — Diseño de referencia de etapa de potencia para termostato de dirección de potencia

TIDA-01574 is a reference design for high-efficiency power stealing for smart thermostats and other building automation equipment. In general, power stealing enables to extend battery life of Wi-Fi enabled smart thermostats by drawing power from 24-V AC when the HVAC load is off. This (...)
Design guide: PDF
Esquema: PDF
Diseños de referencia

TIDA-00180 — Fuente de alimentación con tensión de salida programable y protección de interfaces del codificador

This reference design implements a universal power supply with programmable output voltage and innovative smart eFuse technology for use in a multi-standard position encoder interface module on an industrial drive. The eFuse provides inrush-current and over-current protection as well as user (...)
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

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