Inicio Gestión de la energía Controladores CA/CC y CC/CC (FET externo)
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Controladores CA/CC y CC/CC (FET externo)
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LM5171-Q1

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Controlador elevador‑reductor bidireccional de doble canal de 80 V para automoción

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LM5171-Q1

PRESENTACIÓN PRELIMINAR
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Detalles del producto

Vin (min) (V) 1 Vin (max) (V) 75 Operating temperature range (°C) -40 to 150 Control mode current mode Topology Boost, Buck, Buck/Boost Rating Automotive Vout (min) (V) 3 Vout (max) (V) 80 Iq (typ) (A) 0.001 TI functional safety category Functional Safety-Capable
Vin (min) (V) 1 Vin (max) (V) 75 Operating temperature range (°C) -40 to 150 Control mode current mode Topology Boost, Buck, Buck/Boost Rating Automotive Vout (min) (V) 3 Vout (max) (V) 80 Iq (typ) (A) 0.001 TI functional safety category Functional Safety-Capable
HTQFP (PHP) 48 81 mm² 9 x 9
  • AEC-Q100 qualified for automotive applications:
    • Device temperature grade 1: –40°C to +125°C ambient operating range
    • Device HBM ESD classification level 2
    • Device CDM ESD classification level C4B
  • Functional Safety-Capable
  • 85-V HV-port and 80-V LV-port max ratings
  • 1% Typical Accuracy of bidirectional current regulation
  • 1% Typical Accuracy of channel current monitoring
  • I 2C Interface for monitoring and diagnosis
  • Built-in 3.5V 1% reference voltage
  • Integrated 5V 10mA bias supply
  • 5-A 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
  • AEC-Q100 qualified for automotive applications:
    • Device temperature grade 1: –40°C to +125°C ambient operating range
    • Device HBM ESD classification level 2
    • Device CDM ESD classification level C4B
  • Functional Safety-Capable
  • 85-V HV-port and 80-V LV-port max ratings
  • 1% Typical Accuracy of bidirectional current regulation
  • 1% Typical Accuracy of channel current monitoring
  • I 2C Interface for monitoring and diagnosis
  • Built-in 3.5V 1% reference voltage
  • Integrated 5V 10mA bias supply
  • 5-A 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-Q1 controller provides the essential high voltage and precision elements of a dual-channel bidirectional converter for example is automotive 48-V and 12-V dual battery systems. It supports multiphase parallel operation with balanced current sharing in each phase, and it can also support 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 5-A 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-Q1 controller provides the essential high voltage and precision elements of a dual-channel bidirectional converter for example is automotive 48-V and 12-V dual battery systems. It supports multiphase parallel operation with balanced current sharing in each phase, and it can also support 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 5-A 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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* Data sheet LM5171-Q1 Dual Channel Bidirectional Controller datasheet PDF | HTML 11 abr 2023
Functional safety information LM5171-Q1 Functional Safety FIT, FMD, and Pin FMA (Rev. A) PDF | HTML 06 oct 2023
Certificate LM5171EVM-BIDIR EU Declaration of Conformity (DoC) 05 may 2023

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.

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-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
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Diseños de referencia

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Este diseño de referencia muestra un convertidor elevador intercalado de 2 fases y 450 W para la aplicación de amplificador de audio de clase H. Para alimentar el amplificador de audio externo, el controlador es capaz de seguir la señal de control de clase H del amplificador y generar una tensión (...)
Test report: PDF
Paquete Pasadores Descargar
HTQFP (PHP) 48 Ver opciones
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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

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