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DRV425-Q1

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Sensor magnético Fluxgate totalmente integrado para automoción

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DRV425-Q1

ACTIVO
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Detalles del producto

Number of input channels 1 Features Magnetic Field Sensor Operating temperature range (°C) -40 to 125 Vs (min) (V) 3 Vs (max) (V) 5.5 Interface type Analog voltage Rating Automotive TI functional safety category Functional Safety-Capable
Number of input channels 1 Features Magnetic Field Sensor Operating temperature range (°C) -40 to 125 Vs (min) (V) 3 Vs (max) (V) 5.5 Interface type Analog voltage Rating Automotive TI functional safety category Functional Safety-Capable
WQFN (RTJ) 20 16 mm² (4 mm × 4 mm)
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Functional Safety-Capable
  • High-precision, integrated fluxgate sensor:
    • Offset: ±8 µT (max)
    • Offset drift: ±5 nT/°C (typ)
    • Gain error: 0.04% (typ)
    • Gain drift: ±7 ppm/°C (typ)
    • Linearity: ±0.1%
    • Noise: 1.5 nT/√Hz (typ)
  • Sensor range: ±2 mT (max)
    • Range and gain adjustable with external resistor
  • Selectable bandwidth: 47 kHz or 32 kHz
  • Precision reference:
    • Accuracy: 2% (max), drift: 50 ppm/°C (max)
    • Pin-selectable voltage: 2.5 V or 1.65 V
    • Selectable ratiometric mode: VDD / 2
  • Diagnostic features: Overrange and error flags
  • Supply voltage range: 3.0 V to 5.5 V
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Functional Safety-Capable
  • High-precision, integrated fluxgate sensor:
    • Offset: ±8 µT (max)
    • Offset drift: ±5 nT/°C (typ)
    • Gain error: 0.04% (typ)
    • Gain drift: ±7 ppm/°C (typ)
    • Linearity: ±0.1%
    • Noise: 1.5 nT/√Hz (typ)
  • Sensor range: ±2 mT (max)
    • Range and gain adjustable with external resistor
  • Selectable bandwidth: 47 kHz or 32 kHz
  • Precision reference:
    • Accuracy: 2% (max), drift: 50 ppm/°C (max)
    • Pin-selectable voltage: 2.5 V or 1.65 V
    • Selectable ratiometric mode: VDD / 2
  • Diagnostic features: Overrange and error flags
  • Supply voltage range: 3.0 V to 5.5 V

The DRV425-Q1 automotive device is designed for single-axis magnetic field-sensing applications, and enables electrically-isolated, high-sensitivity, and precise dc- and ac-field measurements. The device provides the unique and proprietary, integrated fluxgate sensor (IFG) with an internal compensation coil to support a high-accuracy sensing range of ±2 mT, with a measurement bandwidth of up to 47 kHz. The low offset, offset drift, and noise of the sensor, combined with the precise gain, low gain drift, and very low nonlinearity provided by the internal compensation coil, result in unrivaled magnetic field measurement precision.This high level of sensitivity and accuracy enables more current measurements in high-current busbar applications, such as traction inverters or battery-management systems. Torque sensor or motor diagnostic systems can benefit from the ability to precisely measure the position or displacement of a magnetic field. The output of the DRV425-Q1 is an analog signal proportional to the sensed magnetic field.

The device offers a complete set of features, including an internal difference amplifier, on-chip precision reference, and diagnostic functions to minimize component count and system-level cost.

The device is available in a thermally-enhanced, nonmagnetic, thin WQFN package, with a thermal pad for optimized heat dissipation, and is specified for operation over the automotive temperature range of –40°C to +125°C.

The DRV425-Q1 automotive device is designed for single-axis magnetic field-sensing applications, and enables electrically-isolated, high-sensitivity, and precise dc- and ac-field measurements. The device provides the unique and proprietary, integrated fluxgate sensor (IFG) with an internal compensation coil to support a high-accuracy sensing range of ±2 mT, with a measurement bandwidth of up to 47 kHz. The low offset, offset drift, and noise of the sensor, combined with the precise gain, low gain drift, and very low nonlinearity provided by the internal compensation coil, result in unrivaled magnetic field measurement precision.This high level of sensitivity and accuracy enables more current measurements in high-current busbar applications, such as traction inverters or battery-management systems. Torque sensor or motor diagnostic systems can benefit from the ability to precisely measure the position or displacement of a magnetic field. The output of the DRV425-Q1 is an analog signal proportional to the sensed magnetic field.

The device offers a complete set of features, including an internal difference amplifier, on-chip precision reference, and diagnostic functions to minimize component count and system-level cost.

The device is available in a thermally-enhanced, nonmagnetic, thin WQFN package, with a thermal pad for optimized heat dissipation, and is specified for operation over the automotive temperature range of –40°C to +125°C.
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Documentación técnica

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Documentación principal Tipo Título Opciones de formato Descargar la versión más reciente en inglés Fecha
* Hoja de datos DRV425-Q1 Automotive, Integrated Fluxgate Magnetic-Field Sensor datasheet (Rev. A) PDF | HTML 24/04/2020
Libro electrónico An Engineer's Guide to Current Sensing (Rev. B) 12/04/2022
Información sobre seguridad funcional DRV425-Q1 Functional Safety FIT Rate, Failure Mode Distribution and Pin FMA 23/03/2020
Application brief Fluxgate for Motor Diagnostics 21/12/2017
Informe Achieve greater precision, reliability with magnetic sensing technology 26/06/2017
Application brief Design Considerations for Dual DRV425 Bus Bar Application 30/03/2017
Nota sobre la aplicación Bus Bar Theory of Operation 8/11/2016

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

DRV425-BUSBAR-EVM — Sensor de corriente de barra de bus de ±100 A con conjunto de evaluación de diseño de referencia de

El DRV425-BUSBAR-EVM es un conjunto de barras de bus completo que constituye una solución de medición de corriente no invasiva (aislada) de hasta ±100 A.  Este conjunto incluye una barra de bus con corte circular, inserto, placa de circuito impreso (PCB), separadores aislados, bloques de (...)
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Placa de evaluación

DRV425EVM — Módulo de evaluación de detección de campo magnético de bucle abierto DRV425

The DRV425EVM is an evaluation platform for the DRV425, a complete analog front end IC and coil driver for open loop magnetic field sensing applications. The DRV425EVM allows the user to explore all the features of the DRV425 device.

Guía del usuario: PDF
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Herramienta de simulación

SBOC481 — DRV425 Bus Bar FEMM Script

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Herramienta de cálculo

SBOC480 — DRV425 Bus Bar Application Magnetic Field Calculator

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Herramienta de cálculo

SLOC331 — DRV425 System Parameter Calculator

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Encapsulado Pines Símbolos CAD, huellas y modelos 3D
WQFN (RTJ) 20 Ultra Librarian
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