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TPS40400

ACTIVO

Controlador reductor síncrono de 3 V a 20 V, 30 A, con PMBus™, incluye telemetría

Detalles del producto

Rating Catalog Topology Buck Iout (max) (A) 30 Vin (max) (V) 20 Vin (min) (V) 3 Vout (max) (V) 5 Vout (min) (V) 0.6 Control mode Voltage mode Features Dynamic Voltage Scaling, Enable, Frequency synchronization, PMBus, Power good, Pre-Bias Start-Up, Remote Sense, Synchronous Rectification, Tracking Duty cycle (max) (%) 90 Iq (typ) (A) 0.006 Number of phases 1 Operating temperature range (°C) -40 to 125
Rating Catalog Topology Buck Iout (max) (A) 30 Vin (max) (V) 20 Vin (min) (V) 3 Vout (max) (V) 5 Vout (min) (V) 0.6 Control mode Voltage mode Features Dynamic Voltage Scaling, Enable, Frequency synchronization, PMBus, Power good, Pre-Bias Start-Up, Remote Sense, Synchronous Rectification, Tracking Duty cycle (max) (%) 90 Iq (typ) (A) 0.006 Number of phases 1 Operating temperature range (°C) -40 to 125
VQFN (RHL) 24 19.25 mm² 5.5 x 3.5
  • Input Operating Voltage Range: 3 V to 20 V
  • PMBus Enabled Analog Controller
  • Reference 600 mV ± 1%
  • Remote Voltage Sense Amplifier
  • Internal 6-V Regulator and 6-V Gate Drive
  • Programmable Overcurrent Protection
  • Inductor Resistance or Series Resistance Used for Current Sensing
  • Programmable Switching Frequency: 200 kHz to 2 MHz
  • Powergood Indicator
  • Thermal Shutdown
  • Programmable Soft-Start
  • Internal Bootstrap Diode
  • Prebias Output Safe
  • 24-Pin QFN Package
  • Input Operating Voltage Range: 3 V to 20 V
  • PMBus Enabled Analog Controller
  • Reference 600 mV ± 1%
  • Remote Voltage Sense Amplifier
  • Internal 6-V Regulator and 6-V Gate Drive
  • Programmable Overcurrent Protection
  • Inductor Resistance or Series Resistance Used for Current Sensing
  • Programmable Switching Frequency: 200 kHz to 2 MHz
  • Powergood Indicator
  • Thermal Shutdown
  • Programmable Soft-Start
  • Internal Bootstrap Diode
  • Prebias Output Safe
  • 24-Pin QFN Package

The TPS40400 is a cost-optimized flexible synchronous buck controller that operates from a nominal 3-V to 20-V supply. This controller is an analog PWM controller that allows programming and monitoring through the PMBus™ interface. Flexible features found on this device include programmable soft-start time, programmable short circuit limit, and programmable undervoltage lockout (UVLO).

An adaptive anti-cross conduction scheme is used to prevent shoot through current in the power FETs. Gate drive voltage is 6 V to better enhance the power FETs for reduced losses. Short circuit detection occurs by sensing the voltage drop across the inductor or across a resistor placed in series with the inductor. A PMBus programmable threshold is compared to this voltage and is used to detect overcurrent. When the overcurrent threshold is reached, a pulse by pulse current limit scheme is used to limit the current to acceptable levels. If the overcurrent condition persists for more than 7 clock cycles of the converter, a fault condition is declared and the converter shuts down and goes into either a hiccup restart mode or latches off. The behavior can be selected through the PMBus interface. Other PMBus interface features include programmable operating frequency, soft-start time, overvoltage and undervoltage thresholds and the response to those events, output voltage change including margining as well as status monitoring.

The TPS40400 is a cost-optimized flexible synchronous buck controller that operates from a nominal 3-V to 20-V supply. This controller is an analog PWM controller that allows programming and monitoring through the PMBus™ interface. Flexible features found on this device include programmable soft-start time, programmable short circuit limit, and programmable undervoltage lockout (UVLO).

An adaptive anti-cross conduction scheme is used to prevent shoot through current in the power FETs. Gate drive voltage is 6 V to better enhance the power FETs for reduced losses. Short circuit detection occurs by sensing the voltage drop across the inductor or across a resistor placed in series with the inductor. A PMBus programmable threshold is compared to this voltage and is used to detect overcurrent. When the overcurrent threshold is reached, a pulse by pulse current limit scheme is used to limit the current to acceptable levels. If the overcurrent condition persists for more than 7 clock cycles of the converter, a fault condition is declared and the converter shuts down and goes into either a hiccup restart mode or latches off. The behavior can be selected through the PMBus interface. Other PMBus interface features include programmable operating frequency, soft-start time, overvoltage and undervoltage thresholds and the response to those events, output voltage change including margining as well as status monitoring.

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Documentación técnica

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Documentación principal Tipo Título Opciones de formato Fecha
* Data sheet TPS40400 3-V to 20-V PMBus Synchronous Buck Controller datasheet (Rev. D) PDF | HTML 07 nov 2016
Analog Design Journal Maximizing power density and thermal performance in power-module designs 12 dic 2018
Selection guide Power Management Guide 2018 (Rev. R) 25 jun 2018
Selection guide DC/DC Buck Controller Solutions Selection Guide 06 feb 2018
Application note SMT Guidelines for Stacked Inductor (Inductor On Top) on Voltage Regulator IC 22 feb 2016
Technical article Select the correct PMBus POL solution for your application PDF | HTML 03 ago 2015
Analog Design Journal 2Q 2012 Issue Analog Applications Journal 26 abr 2012
Analog Design Journal Remote sensing for power supplies 26 abr 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

TPS40400EVM-351 — Módulo de evaluación para controlador reductor síncrono PMBus TPS40400

The TPS40400EVM-351 evaluation module (EVM) is a fully assembled and tested circuit for evaluating the TPS40400 PMBus Synchronous Buck Controller in a typical single output application. The EVM is designed to use a regulated 8Vdc to 14Vdc bus to produce a regulated output of 1.2Vdc at a maximum of (...)

Guía del usuario: PDF | HTML
Software de aplicación y estructura

FUSION_DIGITAL_POWER_DESIGNER — Software de potencia digital

El software de interfaz gráfica de usuario (GUI) Fusion Digital Power™ se utiliza para configurar y supervisar determinados controladores digitales de alimentación y secuenciadores/monitores de estado de Texas Instruments. La aplicación utiliza el protocolo PMBus para comunicarse con el dispositivo (...)
Controlador o biblioteca

PMBUSSW-LINUX — Controlador Linux para PMBUS

The Linux driver supports PMBus controlled Buck Controllers. The Linux driver supports communication through the PMBus and interfaces with the HWMon framework.

 

Linux Mainline Status

Available in Linux Main line: Yes
Available through git.ti.com: N/A

Supported Devices:

  • tps40400
  • tps40422
  • tps544b20
  • tps544b25
  • (...)
Modelo de simulación

TPS40400 IBIS MODEL

SLVMAY8.ZIP (81 KB) - IBIS Model
Modelo de simulación

TPS40400 Unencrypted PSpice Transient Model Package (Rev. A)

SLUM560A.ZIP (221 KB) - PSpice Model
Herramienta de cálculo

SLUC263 Type III Compensation Calculation Tool

Productos y hardware compatibles

Productos y hardware compatibles

Diseños de referencia

PMP21440 — Comparación: Diseño de referencia de fuente de alimentación de 0,8 V/8 W de GaN frente a la de silic

Este diseño de referencia proporciona a los clientes un estudio comparativo sobre el uso de GaN frente al SI en el diseño de fuentes de alimentación. Este diseño específico utiliza el controlador TPS40400 para controlar el CSD87381 en el caso de la fuente de alimentación de silicio y el LMG1210 (...)
Test report: PDF
Esquema: PDF
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
VQFN (RHL) 24 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

Los productos recomendados pueden tener parámetros, módulos de evaluación o diseños de referencia relacionados con este producto de TI.

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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