Inicio Gestión de la energía Controladores CA/CC y CC/CC (FET externo)
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Gestión de la energía
Controladores CA/CC y CC/CC (FET externo)
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LM251772

ACTIVO

36V-VIN four-switch buck-boost controller with I²C for USB-PD sourcing

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LM251772

ACTIVO
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Detalles del producto

Vin (min) (V) 3.5 Vin (max) (V) 36 Operating temperature range (°C) 0 to 70 Topology Buck-Boost Rating Catalog Vout (min) (V) 3.3 Vout (max) (V) 48 Features Adjustable UVLO, Adjustable current limit, Dynamic Voltage Scaling, Enable, Extended power range, Frequency synchronization, I2C, Light Load Efficiency, Load Disconnect, Power good, Spread Spectrum, Synchronous Rectification, Tracking, USB C/PD compatible, UVLO adjustable Iq (typ) (µA) 60 Duty cycle (max) (%) 100
Vin (min) (V) 3.5 Vin (max) (V) 36 Operating temperature range (°C) 0 to 70 Topology Buck-Boost Rating Catalog Vout (min) (V) 3.3 Vout (max) (V) 48 Features Adjustable UVLO, Adjustable current limit, Dynamic Voltage Scaling, Enable, Extended power range, Frequency synchronization, I2C, Light Load Efficiency, Load Disconnect, Power good, Spread Spectrum, Synchronous Rectification, Tracking, USB C/PD compatible, UVLO adjustable Iq (typ) (µA) 60 Duty cycle (max) (%) 100
VQFN (RHA) 40 36 mm² 6 x 6
  • Input range from 3.5V to 36V
  • Dynamical Vo programming via I2C from:
    • 3.3V up to 48V in 20mV steps
    • 1V up to 24V in 10mV steps
  • Peak current regulation control
  • Small voltage transition ripple over all operating modes
  • Shut down quiescent current 3µA
  • Operating quiescent current 60µA
  • Drive (DRV) pin for dual role port power path
    • Push-Pull output for fast pMOS FET control
    • Configurable as charge pump driver stage for nMOS FET
  • Operation mode selection for high efficiency in light load and high load conditions:
    • Power save mode (Single Pulse/µSleep)
    • Automatic conduction mode
  • Integrated high voltage supply LDO
  • Auxiliary high voltage LDO for PD-controller supply
  • Integrated full-bridge gate drive
    • 2A peak current capability
    • Bootstrap over and under-voltage protection
    • Integrated boot-strap diode
  • Fixed frequency independent from operating mode (boost, buck-boost, buck)
    • Forced PWM mode selectable
    • Switching frequency from 100kHz to 600kHz
    • External clock synchronization and clock output
  • Average input or output current sensor
    • Programmable from 0.5A to 7A in 50mA steps
    • ISET pin selectable
  • I2C Interface readout of monitoring features
  • Commercial temperature range (Tj = 0°C to 70°C)

  • Create a custom design using the LM251772 with the WEBENCH® Power Designer
  • Input range from 3.5V to 36V
  • Dynamical Vo programming via I2C from:
    • 3.3V up to 48V in 20mV steps
    • 1V up to 24V in 10mV steps
  • Peak current regulation control
  • Small voltage transition ripple over all operating modes
  • Shut down quiescent current 3µA
  • Operating quiescent current 60µA
  • Drive (DRV) pin for dual role port power path
    • Push-Pull output for fast pMOS FET control
    • Configurable as charge pump driver stage for nMOS FET
  • Operation mode selection for high efficiency in light load and high load conditions:
    • Power save mode (Single Pulse/µSleep)
    • Automatic conduction mode
  • Integrated high voltage supply LDO
  • Auxiliary high voltage LDO for PD-controller supply
  • Integrated full-bridge gate drive
    • 2A peak current capability
    • Bootstrap over and under-voltage protection
    • Integrated boot-strap diode
  • Fixed frequency independent from operating mode (boost, buck-boost, buck)
    • Forced PWM mode selectable
    • Switching frequency from 100kHz to 600kHz
    • External clock synchronization and clock output
  • Average input or output current sensor
    • Programmable from 0.5A to 7A in 50mA steps
    • ISET pin selectable
  • I2C Interface readout of monitoring features
  • Commercial temperature range (Tj = 0°C to 70°C)

  • Create a custom design using the LM251772 with the WEBENCH® Power Designer

The LM251772 is a four switch Buck-Boost controller. It provides a regulated output voltage if the input voltage is higher, equal or lower than the adjusted output voltage. In power save mode the device supports very high efficiency over the complete operation range of the output. The output voltage and average current can be dynamically programmed via the integrated I2C interface. The configuration range for output voltage and average current meet the USB-PD standard requirements. The integrated DRV pin can control a disconnect FET to support dual role port (DRP) requirements.

The LM251772 is a four switch Buck-Boost controller. It provides a regulated output voltage if the input voltage is higher, equal or lower than the adjusted output voltage. In power save mode the device supports very high efficiency over the complete operation range of the output. The output voltage and average current can be dynamically programmed via the integrated I2C interface. The configuration range for output voltage and average current meet the USB-PD standard requirements. The integrated DRV pin can control a disconnect FET to support dual role port (DRP) requirements.
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Documentación técnica

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* Data sheet LM251772 36V 4-Switch Buck-Boost Controller with I2 C for USB-PD sourcing datasheet PDF | HTML 10 oct 2024
Application note Layout Optimization of 4-Switch Buck-Boost Converters PDF | HTML 05 sep 2023

Diseño y desarrollo

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LM51772EVM-HP — Módulo de evaluación LM51772

‌El LM51772EVM-HP demuestra un diseño flexible reductor-elevador de alta alimentación que utiliza el controlador reductor-elevador LM51772 de VIN amplia. El módulo de evaluación está configurado para funcionar con un rango de tensión de entrada de 9 V a 48 V y proporciona una salida regulada de (...)

Guía del usuario: PDF | HTML
No disponible en TI.com
Placa de evaluación

USB2ANY — Adaptador de interfaz USB2ANY

The USB2ANY interface adapter is a tool intended to allow a computer to control an evaluation module (EVM) via a USB connection. USB2ANY supports multiple popular protocol interfaces and provides 3.3-V and 5-V power supplies.

Guía del usuario: PDF
No disponible en TI.com
GUI para el módulo de evaluación (EVM)

LM251772-CONFIGURATON-GUI — LM251772 GUI for configuration via I2C

Graphical User Interface (GUI) to configure the LM251772 via I2C. You can use the Launch button for using the GUI online via a browser or one of the download files to operate the GUI offline
Productos y hardware compatibles

Productos y hardware compatibles

Productos
Controladores CA/CC y CC/CC (FET externo)
LM251772 — 36V-VIN four-switch buck-boost controller with I²C for USB-PD sourcing
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Herramienta de cálculo

LM251772-QUICKSTART-CALC — LM251772 BuckBoost Quickstart Calculator Tool

LM251772 BuckBoost Quickstart Calculator Tool. This standalone tool facilitates and assists the power supply engineer with the design of a DC/DC buck-boost converter based on the LM2521772.
Productos y hardware compatibles

Productos y hardware compatibles

Productos
Controladores CA/CC y CC/CC (FET externo)
LM251772 — 36V-VIN four-switch buck-boost controller with I²C for USB-PD sourcing
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Encapsulado Pines Símbolos CAD, huellas y modelos 3D
VQFN (RHA) 40 Ultra Librarian
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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

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