Automotive eCall Reference Design
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Key Document


TIDA-00159 is a reference design for vehicles equipped with eCall systems which has the capability to enable phone calls to an emergency service center in the event of an accident. Customers can accelerate the design of their eCall systems by taking advantage of a complete reference design comprised of analog AEC-Q100 qualified integrated circuits (ICs) from TI. This design creates a robust, low cost solution that is scalable with flexible power operations which allows the system to be powered from the main car battery or the back-up cell battery.

Note: TIDA-00159 is the second generation eCall reference design and it replaces the previous version TI Design AUTO-ECALL-REF

  • The TPS43330-Q1 pre-boost circuit supports automotive start/stop and boosts back-up battery supply voltage, allowing operation down to 2V at the input
  • The TAS5421-Q1 delivers 10W output power at 8 Ohms which translates to clear and loud audio. The audio amplifier also features integrated diagnostics to increase the safety level
  • The components offered in this system provide load dump protection against input transients up to 40V
  • Can sustain a 10-15 minute phone call in emergency situations
  • Software features a set of AT commands that can be implemented through the RS-232 serial connection with the modem

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Schematic/Block Diagram

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Test Data

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Design Files

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TI Devices (6)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
CSD18532Q5B  60V, N ch NexFET MOSFET™, single SON5x6, 3.2mOhm  MOSFETs  Sample & Buy View Design Kits & Evaluation Modules
CSD18534Q5A  60V, N ch NexFET MOSFET™, single SON5x6, 9.8mOhm  MOSFETs  Sample & Buy View Design Kits & Evaluation Modules
MSP430F2232  16-bit Ultra-Low-Power Microcontroller, 8KB Flash, 512B RAM  Microcontrollers (MCU)  Sample & Buy View Design Kits & Evaluation Modules
TAS5421-Q1  22-W Analog Input Mono Channel Automotive Class-D Audio Amplifier With Load Dump and I2C Diagnostics  Audio amplifiers  Sample & Buy View Design Kits & Evaluation Modules
TPS43330-Q1  Automotive 2V to 40V Low Iq Single Boost & Dual Synchronous Buck Controller  Power management  Not Available View Design Kits & Evaluation Modules
TRS3223-Q1  Automotive Catalog 3-V To 5.5-V Multichannel RS-232 Line Driver/Receiver With +/- 15-kV ESD  Interface  Sample & Buy Not Available

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
CSD18532Q5B VSON-CLIP (DNK)| 8 Download Download
CSD18534Q5A VSONP (DQJ)| 8 Download
MSP430F2232 Download -
Download Download
Download -
TAS5421-Q1 Download
TPS43330-Q1 Download -
TRS3223-Q1 Download Download

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Technical Documents

See the Important Notice and Disclaimer covering reference designs and other TI resources.

User guides (2)
Title Type Size (KB) Date
PDF 1437 20 Sep 2016
PDF 406 17 Jul 2014
Design files (6)
Title Type Size (KB) Date
ZIP 3770 17 Jul 2014
ZIP 19177 17 Jul 2014
ZIP 1968 17 Jul 2014
PDF 68 17 Jul 2014
PDF 99 17 Jul 2014
PDF 496 17 Jul 2014
More literature (1)
Title Type Size (KB) Date
ZIP 74236 27 Sep 2017
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Software (1)

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