Inicio Gestión de la energía Interruptores de potencia Controladores de diodo ideal/ORing

LM74930-Q1

ACTIVO

Tope de sobretensión de 3 V a 65 V para automoción con disyuntor y protección contra sobretensión

Detalles del producto

Vin (min) (V) 3 Vin (max) (V) 65 Number of channels 1 Features Adjustable current limit, Analog current monitor, Overvoltage protection, Reverse current blocking, Reverse polarity protection, Short circuit protection, Surge protection Iq (typ) (mA) 0.65 FET External back-to-back FET IGate source (typ) (µA) 18500 IGate sink (typ) (mA) 2670 Operating temperature range (°C) -40 to 125 Rating Automotive Shutdown current (ISD) (mA) (A) 0.003 Device type Ideal diode controller Product type Ideal diode controller
Vin (min) (V) 3 Vin (max) (V) 65 Number of channels 1 Features Adjustable current limit, Analog current monitor, Overvoltage protection, Reverse current blocking, Reverse polarity protection, Short circuit protection, Surge protection Iq (typ) (mA) 0.65 FET External back-to-back FET IGate source (typ) (µA) 18500 IGate sink (typ) (mA) 2670 Operating temperature range (°C) -40 to 125 Rating Automotive Shutdown current (ISD) (mA) (A) 0.003 Device type Ideal diode controller Product type Ideal diode controller
VQFN (RGE) 24 16 mm² 4 x 4
  • AEC-Q100 qualified for automotive applications
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature range
  • 4-V to 65-V input range
  • Reverse input protection down to –65 V
  • Drives external back-to-back N-Channel MOSFETs in common source configuration
  • Ideal diode operation with 10.5-mV A to C forward voltage drop regulation
  • Low reverse detection threshold (–10.5 mV) with fast DGATE turn-off response (0.5 µs)
  • 18-mA peak gate (DGATE) turn on current
  • 2.6-A peak DGATE turn-off current
  • Adjustable overcurrent and short circuit protection
  • Analog current monitor output with 10% accuracy (IMON)
  • Adjustable overvoltage and undervoltage protection
  • Low 2.5-µA shutdown current (EN=Low)
  • MODE pin to allow bi-directional current flow (MODE=Low)
  • Meets automotive ISO7637 transient requirements with a suitable TVS diode
  • Available in space saving 24-pin VQFN package

  • AEC-Q100 qualified for automotive applications
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature range
  • 4-V to 65-V input range
  • Reverse input protection down to –65 V
  • Drives external back-to-back N-Channel MOSFETs in common source configuration
  • Ideal diode operation with 10.5-mV A to C forward voltage drop regulation
  • Low reverse detection threshold (–10.5 mV) with fast DGATE turn-off response (0.5 µs)
  • 18-mA peak gate (DGATE) turn on current
  • 2.6-A peak DGATE turn-off current
  • Adjustable overcurrent and short circuit protection
  • Analog current monitor output with 10% accuracy (IMON)
  • Adjustable overvoltage and undervoltage protection
  • Low 2.5-µA shutdown current (EN=Low)
  • MODE pin to allow bi-directional current flow (MODE=Low)
  • Meets automotive ISO7637 transient requirements with a suitable TVS diode
  • Available in space saving 24-pin VQFN package

The LM74930-Q1 ideal diode controller drives and controls external back to back N-Channel MOSFETs to emulate an ideal diode rectifier and power path ON and OFF control with over current and overvoltage protection. The wide input supply of 4 V to 65 V allows protection and control of 12-V and 24-V automotive battery powered ECUs. The device can withstand and protect the loads from negative supply voltages down to –65 V. An integrated high side gate control (HGATE) drives the first MOSFET in the power path. The device allows load disconnect (ON and OFF control) in case of overcurrent, overvoltage and undervoltage event using HGATE control while ideal diode controller (DGATE) drives a second MOSFET to replace a Schottky diode for input reverse polarity protection and output voltage holdup by blocking the reverse current from output to input. The device has integrated current sense amplifier which provides with an adjustable overcurrent and short circuit protection with circuit breaker functionality. The device features an adjustable overvoltage and undervoltage protection feature to protect against supply transients. LM74930-Q1 features MODE pin which can be used to selectively enable or disable reverse current blocking functionality.

The LM74930-Q1 ideal diode controller drives and controls external back to back N-Channel MOSFETs to emulate an ideal diode rectifier and power path ON and OFF control with over current and overvoltage protection. The wide input supply of 4 V to 65 V allows protection and control of 12-V and 24-V automotive battery powered ECUs. The device can withstand and protect the loads from negative supply voltages down to –65 V. An integrated high side gate control (HGATE) drives the first MOSFET in the power path. The device allows load disconnect (ON and OFF control) in case of overcurrent, overvoltage and undervoltage event using HGATE control while ideal diode controller (DGATE) drives a second MOSFET to replace a Schottky diode for input reverse polarity protection and output voltage holdup by blocking the reverse current from output to input. The device has integrated current sense amplifier which provides with an adjustable overcurrent and short circuit protection with circuit breaker functionality. The device features an adjustable overvoltage and undervoltage protection feature to protect against supply transients. LM74930-Q1 features MODE pin which can be used to selectively enable or disable reverse current blocking functionality.

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Documentación técnica

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Tipo Título Fecha
* Data sheet LM74930-Q1 Automotive Ideal Diode Surge Stopper With Circuit Breaker, Overvoltage Protection, and Fault Output datasheet PDF | HTML 31 oct 2023
Application brief Protection against Unsuppressed Load Dump in Automotive Systems using LM74930-Q1 PDF | HTML 14 nov 2023
EVM User's guide LM74930-Q1 Evaluation Module for Ideal Diode Controller User's Guide PDF | HTML 01 nov 2023
Certificate LM74930Q1EVM EU Declaration of Conformity (DoC) 05 oct 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.

Placa de evaluación

LM74930Q1EVM — Módulo de evaluación LM74930-Q1 para limitador de sobretensiones de 3 V a 65 V con disyuntor

El módulo de evaluación (EVM) LM74930-Q1 es una plataforma para evaluar el funcionamiento y el rendimiento del controlador de diodo ideal LM74930-Q1 en aplicaciones de protección inversa de la batería. LM74930Q1EVM demuestra cómo LM74930-Q1 controla dos MOSFET de potencia de canal N consecutivos (...)

Guía del usuario: PDF | HTML
Modelo de simulación

LM74930-Q1 PSpice Transient Model

SNOM787.ZIP (73 KB) - PSpice Model
Herramienta de cálculo

LM74930-CALC Design calculator for LM74930-Q1 ideal diode controller

The design calculator allows user to size the external peripheral components while designing with LM74930-Q1 ideal diode controller
Productos y hardware compatibles

Productos y hardware compatibles

Productos
Controladores de diodo ideal/ORing
LM74930-Q1 Tope de sobretensión de 3 V a 65 V para automoción con disyuntor y protección contra sobretensión
Herramienta de simulación

PSPICE-FOR-TI — PSpice® para herramienta de diseño y simulación de TI

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Paquete Pasadores Descargar
VQFN (RGE) 24 Ver opciones

Pedidos y calidad

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  • Resumen de calificaciones
  • Monitoreo continuo de confiabilidad
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  • Lugar de fabricación
  • Lugar de ensamblaje

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