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LM5171

ACTIVO

Controlador buck-boost bidireccional de doble canal de 80 V para automoción

Detalles del producto

Vin (min) (V) 1 Vin (max) (V) 75 Operating temperature range (°C) -40 to 150 Topology Boost, Buck, Buck/Boost Rating Catalog Vout (min) (V) 3 Vout (max) (V) 80 Features 1% accuracy, 1-MHz maximum frequency, 2 outputs, Adj Current Limit, Adjustable UVLO, Adjustable current limit, Adjustable soft start, Adjustable switching frequency, Bi-directional, Enable, Frequency synchronization, Light Load Efficiency, Multiple Outputs, Phase Interleaving, Power good, Synchronous Rectification, UVLO adjustable Iq (typ) (µA) 1000 Duty cycle (max) (%) 99 TI functional safety category Functional Safety-Capable
Vin (min) (V) 1 Vin (max) (V) 75 Operating temperature range (°C) -40 to 150 Topology Boost, Buck, Buck/Boost Rating Catalog Vout (min) (V) 3 Vout (max) (V) 80 Features 1% accuracy, 1-MHz maximum frequency, 2 outputs, Adj Current Limit, Adjustable UVLO, Adjustable current limit, Adjustable soft start, Adjustable switching frequency, Bi-directional, Enable, Frequency synchronization, Light Load Efficiency, Multiple Outputs, Phase Interleaving, Power good, Synchronous Rectification, UVLO adjustable Iq (typ) (µA) 1000 Duty cycle (max) (%) 99 TI functional safety category Functional Safety-Capable
HTQFP (PHP) 48 81 mm² 9 x 9
  • Functional Safety-Capable
  • 85V HV-port and 80V LV-port max ratings
  • 1% Typical accuracy of bidirectional current regulation
  • 1% Typical accuracy of channel current monitoring
  • I2C interface for monitoring and diagnosis
  • Built-in 3.5V 1% reference voltage
  • Integrated 5V 10mA bias supply
  • 5A peak half-bridge gate drivers
  • Programmable or adaptive dead-time control
  • Programmable oscillator frequency up to 1MHz with optional synchronization to external clock
  • Independent channel enabling control inputs
  • Integrated both current and voltage loop control
  • Programmable cycle-by-cycle peak current limit
  • Over-temperature shutdown
  • HV and LV port overvoltage protection
  • Dynamically selectable diode emulation and forced PWM operation modes
  • Programmable soft-start timer
  • Support both multiphase and independent channel operations
  • Support urgent shutdown latch
  • Functional Safety-Capable
  • 85V HV-port and 80V LV-port max ratings
  • 1% Typical accuracy of bidirectional current regulation
  • 1% Typical accuracy of channel current monitoring
  • I2C interface for monitoring and diagnosis
  • Built-in 3.5V 1% reference voltage
  • Integrated 5V 10mA bias supply
  • 5A peak half-bridge gate drivers
  • Programmable or adaptive dead-time control
  • Programmable oscillator frequency up to 1MHz with optional synchronization to external clock
  • Independent channel enabling control inputs
  • Integrated both current and voltage loop control
  • Programmable cycle-by-cycle peak current limit
  • Over-temperature shutdown
  • HV and LV port overvoltage protection
  • Dynamically selectable diode emulation and forced PWM operation modes
  • Programmable soft-start timer
  • Support both multiphase and independent channel operations
  • Support urgent shutdown latch

The LM5171 controller provides the high voltage and precision elements of a dual-channel bidirectional converter. Examples include dual battery systems. The LM5171 supports multiphase parallel operation with balanced current sharing in each phase. The LM5171 also supports independent channel bi-directional operations making it versatile as standalone controller operating as multiphase Buck/Boost or independent Buck or Boost.

The dual-channel differential current sense amplifiers and dedicated channel current monitors achieve typical accuracy of 1%. The robust 5A half-bridge gate drivers are capable of driving parallel MOSFETs for scaling more power per channel. The controller can be dynamically programmed to operate in either the diode emulation mode (DEM) or forced PWM (FPWM) mode. Versatile protection features include cycle-by-cycle current limiting, overvoltage protection at both HV and LV ports, and overtemperature protection and urgent shutdown latch.

The LM5171 controller provides the high voltage and precision elements of a dual-channel bidirectional converter. Examples include dual battery systems. The LM5171 supports multiphase parallel operation with balanced current sharing in each phase. The LM5171 also supports independent channel bi-directional operations making it versatile as standalone controller operating as multiphase Buck/Boost or independent Buck or Boost.

The dual-channel differential current sense amplifiers and dedicated channel current monitors achieve typical accuracy of 1%. The robust 5A half-bridge gate drivers are capable of driving parallel MOSFETs for scaling more power per channel. The controller can be dynamically programmed to operate in either the diode emulation mode (DEM) or forced PWM (FPWM) mode. Versatile protection features include cycle-by-cycle current limiting, overvoltage protection at both HV and LV ports, and overtemperature protection and urgent shutdown latch.

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Documentación técnica

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Tipo Título Fecha
* Data sheet LM5171 Dual Channel Bidirectional Controller datasheet PDF | HTML 16 jun 2024
Application note U-140 Average Current Mode Control of Switching Power Supplies 05 sep 1999

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

LM5171EVM-BIDIR — Módulo de evaluación LM5171

El módulo de evaluación (EVM) LM5171EVM-BIDIR es un convertidor bidireccional intercalado de fase dual ideal para aplicaciones de sistemas de batería dual de 48 V a 12 V. Es apilable multifásico con ángulo de intercalación ajustable y reparto equilibrado de la corriente. El EVM también incluye (...)
Guía del usuario: PDF | HTML
Herramienta de cálculo

LM5171-CALC LM5171-Q1 Quickstart Calculator

LM5171-Q1 Quickstart Calculator helps on design of the power stage, current loop and voltage loop. Component calculations for the controller are also included.
Productos y hardware compatibles

Productos y hardware compatibles

Productos
Controladores CA/CC y CC/CC (FET externo)
LM5171 Controlador buck-boost bidireccional de doble canal de 80 V para automoción LM5171-Q1 Controlador elevador‑reductor bidireccional de doble canal de 80 V para automoción
Desarrollo de hardware
Placa de evaluación
LM5171EVM-BIDIR Módulo de evaluación LM5171
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
HTQFP (PHP) 48 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

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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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