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Circuitos integrados de interfaz de detección de múltiples interruptores (MSDI)

TIC12400-Q1

ACTIVO

Interfaz de detección de interruptor múltiple (MSDI) de 35 V con SPI y ADC integrado de calidad auto

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TIC12400-Q1

ACTIVO
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Detalles del producto

Number of input channels 24 Operating voltage (min) (V) 4.5 Operating voltage (max) (V) 35 Input/output voltage (max) (V) 40 Input/output voltage (min) (V) -24 IO current (mA) 1, 2, 5, 10, 15 Operating temperature range (°C) -40 to 125 TI functional safety category Functional Safety-Capable Interface type SPI Features Configurable wetting current, Integrated 10-bit ADC, Interrupt wake-up operation, Overvoltage warning, Polling mode, SPI, Undervoltage warning, Withstands load dump condition and reverse polarity condition Diagnostics ADC self-diagnostic, Wetting current diagnostic Logic voltage (min) (V) 3 Logic voltage (max) (V) 5.5 Rating Automotive
Number of input channels 24 Operating voltage (min) (V) 4.5 Operating voltage (max) (V) 35 Input/output voltage (max) (V) 40 Input/output voltage (min) (V) -24 IO current (mA) 1, 2, 5, 10, 15 Operating temperature range (°C) -40 to 125 TI functional safety category Functional Safety-Capable Interface type SPI Features Configurable wetting current, Integrated 10-bit ADC, Interrupt wake-up operation, Overvoltage warning, Polling mode, SPI, Undervoltage warning, Withstands load dump condition and reverse polarity condition Diagnostics ADC self-diagnostic, Wetting current diagnostic Logic voltage (min) (V) 3 Logic voltage (max) (V) 5.5 Rating Automotive
HTSSOP (DCP) 38 62.08 mm² (9.7 mm × 6.4 mm)
  • Qualified for automotive applications
  • AEC-Q100 qualified with the following results:
    • Device temperature grade 1: –40°C to 125°C ambient operating temperature
    • Device HBM ESD classification level H2
    • Device CDM ESD classification level C4B
  • Functional Safety-Capable
  • Designed to support 12 V automotive systems with over-voltage and under-voltage warning
  • Monitors up to 24 direct switch inputs with 10 inputs configurable to monitor switches connected to either ground or battery
  • Switch input withstands up to 40 V (load dump condition) and down to −24 V (reverse polarity condition)
  • 6 configurable wetting current settings: (0 mA, 1 mA, 2 mA, 5 mA, 10 mA, and 15 mA)
  • Integrated 10-bit ADC for multi-position analog switch monitoring
  • Integrated comparator with 4 programmable thresholds for digital switch monitoring
  • Ultra-low operating current in polling mode: 68 µA typical (tPOLL = 64 ms, tPOLL_ACT = 128 µs, all 24 inputs active, comparator mode, all switches open)
  • Interfaces directly to MCU using 3.3 V / 5 V serial peripheral interface (SPI) protocol
  • Interrupt generation to support wake-up operation on all inputs
  • Integrated battery and temperature sensing
  • ±8 kV contact discharge ESD protection on input pins per ISO-10605 with appropriate external components
  • 38-Pin TSSOP package
  • Qualified for automotive applications
  • AEC-Q100 qualified with the following results:
    • Device temperature grade 1: –40°C to 125°C ambient operating temperature
    • Device HBM ESD classification level H2
    • Device CDM ESD classification level C4B
  • Functional Safety-Capable
  • Designed to support 12 V automotive systems with over-voltage and under-voltage warning
  • Monitors up to 24 direct switch inputs with 10 inputs configurable to monitor switches connected to either ground or battery
  • Switch input withstands up to 40 V (load dump condition) and down to −24 V (reverse polarity condition)
  • 6 configurable wetting current settings: (0 mA, 1 mA, 2 mA, 5 mA, 10 mA, and 15 mA)
  • Integrated 10-bit ADC for multi-position analog switch monitoring
  • Integrated comparator with 4 programmable thresholds for digital switch monitoring
  • Ultra-low operating current in polling mode: 68 µA typical (tPOLL = 64 ms, tPOLL_ACT = 128 µs, all 24 inputs active, comparator mode, all switches open)
  • Interfaces directly to MCU using 3.3 V / 5 V serial peripheral interface (SPI) protocol
  • Interrupt generation to support wake-up operation on all inputs
  • Integrated battery and temperature sensing
  • ±8 kV contact discharge ESD protection on input pins per ISO-10605 with appropriate external components
  • 38-Pin TSSOP package

The TIC12400-Q1 is an advanced Multiple Switch Detection Interface (MSDI) designed to detect external switch status in a 12-V automotive system. The TIC12400-Q1 features an integrated 10-bit ADC to monitor multi-position analog switches and a comparator to monitor digital switches independently of the MCU. Detection thresholds can be programmed for the ADC and the comparator to support various switch topologies and system non-idealities. The device monitors 24 direct switch inputs, with 10 inputs configurable to monitor switches connected to either ground or battery. 6 unique wetting current settings can be programmed for each input to support different application scenarios. The device supports wake-up operation on all switch inputs to eliminate the need to keep the MCU active continuously, thus reducing power consumption of the system. The TIC12400-Q1 also offers integrated fault detection, ESD protection, and diagnostic functions for improved system robustness. The TIC12400-Q1 supports 2 modes of operations: continuous and polling mode. In continuous mode, wetting current is supplied continuously. In polling mode, wetting current is turned on periodically to sample the input status based on a programmable timer, thus the system power consumption is significantly reduced.

The TIC12400-Q1 is an advanced Multiple Switch Detection Interface (MSDI) designed to detect external switch status in a 12-V automotive system. The TIC12400-Q1 features an integrated 10-bit ADC to monitor multi-position analog switches and a comparator to monitor digital switches independently of the MCU. Detection thresholds can be programmed for the ADC and the comparator to support various switch topologies and system non-idealities. The device monitors 24 direct switch inputs, with 10 inputs configurable to monitor switches connected to either ground or battery. 6 unique wetting current settings can be programmed for each input to support different application scenarios. The device supports wake-up operation on all switch inputs to eliminate the need to keep the MCU active continuously, thus reducing power consumption of the system. The TIC12400-Q1 also offers integrated fault detection, ESD protection, and diagnostic functions for improved system robustness. The TIC12400-Q1 supports 2 modes of operations: continuous and polling mode. In continuous mode, wetting current is supplied continuously. In polling mode, wetting current is turned on periodically to sample the input status based on a programmable timer, thus the system power consumption is significantly reduced.
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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 TIC12400-Q1 24-Input Multiple Switch Detection Interface (MSDI) With Integrated ADC and Adjustable Wetting Current for Automotive Systems datasheet (Rev. C) PDF | HTML 9/02/2022
Nota sobre la aplicación Understanding ADC Input Leakage and Sampling Behavior in TIC12400-Q1 PDF | HTML 11/06/2026
Application brief Zonal Architecture and MCU I/O Expansion PDF | HTML 2/02/2023
Información sobre seguridad funcional TIC12400-Q1, TIC10024-Q1 Functional Safety, FIT Rate, Failure Mode Distribution PDF | HTML 12/08/2021
Artículo técnico Body control module resources to make your design more efficient and reliable PDF | HTML 30/10/2020
Application brief Protecting 12-V MSDI Devices in a 24-V System PDF | HTML 22/09/2020
Nota sobre la aplicación Switch Detection in BCM: Integrated MSDI Solution vs. Semi Discrete Solution 11/08/2020
Nota sobre la aplicación Steps to Configure TIC12400-Q1 Multiple Switch Detection Interface (MSDI) 7/04/2019
Nota sobre la aplicación Input Sharing with the TIC12400-Q1 23/02/2018
Informe de prueba TIC12400-Q1 and TIC10024-Q1 ISO-10605 ESD Test Report 27/11/2017
Artículo técnico How to reduce the number of I/O pins with a switch matrix module PDF | HTML 2/11/2017
Artículo técnico Body control modules – invisible but fundamental for every car PDF | HTML 19/10/2017
Artículo técnico The multi-switch detection interface: integrated features for smaller, more effici PDF | HTML 10/10/2017

Diseño y desarrollo

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Placa de evaluación

TIC12400EVM-KIT — Kit de módulo de evaluación para la interfaz de detección de conmutación múltiple TIC12400-Q1 de 24

El TIC12400EVM-KIT es una plataforma de evaluación flexible de dos placas que le permite evaluar la amplia gama de funciones del dispositivo TIC12400-Q1. El dispositivo TIC12400-Q1 es una solución de interruptor y monitoreo de contactos de 24 canales que incorpora una arquitectura de sondeo de (...)
Guía del usuario: PDF
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Modelo de simulación

TIC12400-Q1 IBIS Model

SCPM043.ZIP (53 KB) - Modelo IBIS
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Diseño de referencia

TIDA-01237 — Diseño de referencia de la interfaz de detección de interruptores múltiples (MSDI) para automoción

Este diseño de referencia muestra implementaciones de ejemplo de cómo manejar una variedad de entradas de conmutación de alta tensión (HV) utilizando un dispositivo de interfaz de detección de múltiples interruptores (MSDI). En esta guía del usuario se proporcionan ejemplos del mundo real de un (...)

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Diseño de referencia

TIDA-020079 — Diseño de referencia de zona

Este diseño de referencia muestra las funciones clave de los módulos de control de zona de última generación, como la distribución de energía, el accionamiento de cargas y las redes internas al vehículo. El diseño destaca un diseño de circuito integrado de administración de potencia (PMIC) y (...)
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HTSSOP (DCP) 38 Ultra Librarian
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