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ICs für Schnittstelle für Multischaltererfassung (MSDI)

TIC12400-Q1

AKTIV

Multi-Switch Detection Interface (MSDI) für die Automobilindustrie, 35 V, mit SPI & integriertem ADC

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Datenblatt

TIC12400-Q1

AKTIV
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Produktdetails

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 x 6.4
  • 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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Technische Dokumentation

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Typ Titel Datum
* Data sheet TIC12400-Q1 24-Input Multiple Switch Detection Interface (MSDI) With Integrated ADC and Adjustable Wetting Current for Automotive Systems datasheet (Rev. C) PDF | HTML 09 Feb 2022
Application brief Zonal Architecture and MCU I/O Expansion PDF | HTML 02 Feb 2023
Functional safety information TIC12400-Q1, TIC10024-Q1 Functional Safety, FIT Rate, Failure Mode Distribution PDF | HTML 12 Aug 2021
Technical article Body control module resources to make your design more efficient and reliable PDF | HTML 30 Okt 2020
Application brief Protecting 12-V MSDI Devices in a 24-V System 22 Sep 2020
Application note Switch Detection in BCM: Integrated MSDI Solution vs. Semi Discrete Solution 11 Aug 2020
Application note Steps to Configure TIC12400-Q1 Multiple Switch Detection Interface (MSDI) 07 Apr 2019
Application note Input Sharing with the TIC12400-Q1 23 Feb 2018
Test report TIC12400-Q1 and TIC10024-Q1 ISO-10605 ESD Test Report 27 Nov 2017
Technical article How to reduce the number of I/O pins with a switch matrix module PDF | HTML 02 Nov 2017
Technical article Body control modules – invisible but fundamental for every car PDF | HTML 19 Okt 2017
Technical article The multi-switch detection interface: integrated features for smaller, more effici PDF | HTML 10 Okt 2017

Design und Entwicklung

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Referenzdesigns

TIDA-01237 — Multi-Switch Detection Interface (MSDI) für die Automobilindustrie – Referenzdesign

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