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

Wide-VIN 2.2MHz dual-phase boost controller with VOUT tracking

Detalles del producto

Vin (min) (V) 2.5 Vin (max) (V) 45 Operating temperature range (°C) -40 to 150 Control mode current mode control Topology Boost Controller Rating Automotive Vout (min) (V) 6 Vout (max) (V) 60 Features AEC-Q100 Automotive Qual, Adjustable current limit, Adjustable soft start, Adjustable switching frequency, Analog current monitor, Automatic Light Load Management, Automotive load dump, Bypass Mode, Chip-enable control pin, Cycle-by-cycle overcurrent protection, External Sync, Forced PWM, Multiphase, Overcurrent protection with adjustable delay, Power good, Programmable dead time, Spread Spectrum, Tracking, Wettable flanks package Iq (typ) (µA) 250 Duty cycle (max) (%) 99.2 TI functional safety category Functional Safety-Compliant
Vin (min) (V) 2.5 Vin (max) (V) 45 Operating temperature range (°C) -40 to 150 Control mode current mode control Topology Boost Controller Rating Automotive Vout (min) (V) 6 Vout (max) (V) 60 Features AEC-Q100 Automotive Qual, Adjustable current limit, Adjustable soft start, Adjustable switching frequency, Analog current monitor, Automatic Light Load Management, Automotive load dump, Bypass Mode, Chip-enable control pin, Cycle-by-cycle overcurrent protection, External Sync, Forced PWM, Multiphase, Overcurrent protection with adjustable delay, Power good, Programmable dead time, Spread Spectrum, Tracking, Wettable flanks package Iq (typ) (µA) 250 Duty cycle (max) (%) 99.2 TI functional safety category Functional Safety-Compliant
VQFN (RHB) 32 25 mm² 5 x 5
  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: TA = –40°C to +125°C
  • Functional Safety-Capable
  • Input voltage 4.5V to 42V
    • Minimum 2.5V for V(BIAS) ≥ 4.5V or VOUT ≥ 6V
  • Output Voltage 6V to 60V
    • 2% accuracy, internal feedback resistors
    • Bypass operation for VI > VOUT
    • Dynamic output voltage tracking
      • Digital PWM tracking (DTRK)
      • Analog tracking (ATRK)
    • Overvoltage protection (64V, 50V, 35V, 28.5V)
  • Low shutdown IQ of 2µA typ. (5µA maximum)
  • Low operating IQ of 1.4mA typ. (2mA maximum)
  • Stacking with interleaved multiphase operation
    • Up to 4-phases without external clock
  • Switching frequency from 100kHz to 2.2MHz
    • Synchronization to external clock (SYNCIN)
    • Dynamically selectable switching modes (FPWM, diode emulation)
    • Spread spectrum (DRSS)
  • Selectable dead time (18ns to 200ns)
  • Current sense resistor or DCR sensing
  • Average inductor current monitor
  • Average input current limit
    • Programmable current limit
    • Selectable delay time
  • Power-good indicator
  • Programmable VI undervoltage lockout (UVLO)
  • Lead-less VQFN-32 package with wettable flanks
  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: TA = –40°C to +125°C
  • Functional Safety-Capable
  • Input voltage 4.5V to 42V
    • Minimum 2.5V for V(BIAS) ≥ 4.5V or VOUT ≥ 6V
  • Output Voltage 6V to 60V
    • 2% accuracy, internal feedback resistors
    • Bypass operation for VI > VOUT
    • Dynamic output voltage tracking
      • Digital PWM tracking (DTRK)
      • Analog tracking (ATRK)
    • Overvoltage protection (64V, 50V, 35V, 28.5V)
  • Low shutdown IQ of 2µA typ. (5µA maximum)
  • Low operating IQ of 1.4mA typ. (2mA maximum)
  • Stacking with interleaved multiphase operation
    • Up to 4-phases without external clock
  • Switching frequency from 100kHz to 2.2MHz
    • Synchronization to external clock (SYNCIN)
    • Dynamically selectable switching modes (FPWM, diode emulation)
    • Spread spectrum (DRSS)
  • Selectable dead time (18ns to 200ns)
  • Current sense resistor or DCR sensing
  • Average inductor current monitor
  • Average input current limit
    • Programmable current limit
    • Selectable delay time
  • Power-good indicator
  • Programmable VI undervoltage lockout (UVLO)
  • Lead-less VQFN-32 package with wettable flanks

The LM5125-Q1 is a stackable, multiphase, synchronous, boost controller. The device provides a regulated output voltage for lower or equal input voltage also supporting VI to VOUT bypass mode to save power. Two devices can be stacked with or without external clock.

VOUT can be dynamically programmed using the digital or analog ATRK/DTRK function. VI can be as low as 2.5V after start-up as the internal VCC supply is automatically switched from VBIAS to VOUT for VBIAS < 4.5V. The fixed switching frequency is set between 100kHz and 2.2MHz through a resistor on the RT pin or the SYNCIN clock. The switching modes, FPWM, or diode emulation can be changed during operation.

The implemented protections peak current limit, average input current limit, average inductor current monitor, over and undervoltage protection, or the thermal shutdown protect the device and the application.

The LM5125-Q1 is a stackable, multiphase, synchronous, boost controller. The device provides a regulated output voltage for lower or equal input voltage also supporting VI to VOUT bypass mode to save power. Two devices can be stacked with or without external clock.

VOUT can be dynamically programmed using the digital or analog ATRK/DTRK function. VI can be as low as 2.5V after start-up as the internal VCC supply is automatically switched from VBIAS to VOUT for VBIAS < 4.5V. The fixed switching frequency is set between 100kHz and 2.2MHz through a resistor on the RT pin or the SYNCIN clock. The switching modes, FPWM, or diode emulation can be changed during operation.

The implemented protections peak current limit, average input current limit, average inductor current monitor, over and undervoltage protection, or the thermal shutdown protect the device and the application.

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Documentación técnica

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* Data sheet LM5125-Q1, Wide-VIN, Dual-Phase, Automotive, Boost Controller With VOUT Tracking datasheet PDF | HTML 02 dic 2024
Functional safety information LM5125-Q1, LM51251-Q1 Functional Safety FIT, FMD and Pin FMA PDF | HTML 13 nov 2024

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

LM5125EVM-BST — Módulo de evaluación LM5125

El módulo de evaluación LM5125 muestra las características y el rendimiento del controlador elevador bifásico síncrono de tensión de entrada amplia LM5125-Q1. Este EVM está diseñado para facilitar la configuración, lo que permite al usuario evaluar diferentes condiciones en el módulo. La (...)

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

LM5125-DESIGN LM5125 design resources

This resource includes the preliminary calculator and GUIs for LM5125, LM51251, LM5126 and LM51261
Productos y hardware compatibles

Productos y hardware compatibles

Productos
Controladores CA/CC y CC/CC (FET externo)
LM5125-Q1 Wide-VIN 2.2MHz dual-phase boost controller with VOUT tracking
Desarrollo de hardware
Placa de evaluación
LM5125EVM-BST Módulo de evaluación LM5125
Herramienta de cálculo

LM5125-CALC LM5125 quick start calculator

LM5125 quick start calculator helps on design of the power stage, component selection and loop compensation.
Productos y hardware compatibles

Productos y hardware compatibles

Productos
Controladores CA/CC y CC/CC (FET externo)
LM5125-Q1 Wide-VIN 2.2MHz dual-phase boost controller with VOUT tracking
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
VQFN (RHB) 32 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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