ADAS power reference design with improved voltage supervision TIDA-050008 (ACTIVE)

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Key Document

Description

This TI design provides an automotive power solution with additional precision voltage supervision and window watchdog for safety MCUs in advanced driver assistance systems (ADAS). These ADAS systems can control driving functions, such as automated emergency brake, lane keep assist, and adaptive cruise control. High-accuracy voltage detectors are monitoring each rail for improved supervision that can help customers achieve their functional safety goals.

Features
  • Accurate supervision (1% max, -40°C to 125°C) for overvoltage and undervoltage monitoring
  • Programmable window watchdog timer to interface with safety MCU
  • Precision voltage reference for accurate analog-to-digital converter (ADC) diagnostics and monitoring
  • Reverse battery protection with low voltage drop (approx. 20 mV)
  • Power supply from automotive battery providing 5-V, 3.3-V, and 1.2-V rails
  • Emissions tested according to CISPR 25 Class 5

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Schematic/Block Diagram

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Design Guide

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Design Files

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TI Devices (8)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
LM4132-Q1  Automotive SOT23 Precision Low Dropout Voltage Reference  Voltage references  Sample & Buy Not Available
LM73605-Q1  Automotive Qualified 3.5V to 36V, 5A Synchronous Step-Down Voltage Converter  Step-down (buck)  Sample & Buy View Design Kits & Evaluation Modules
TLV1805-Q1  40V, microPower, Push-Pull Automotive High Voltage Comparator with Shutdown  Amplifiers  Sample & Buy View Design Kits & Evaluation Modules
TPS3703-Q1  Automotive high-accuracy window supervisor with reset time delay  Power management  Sample & Buy View Design Kits & Evaluation Modules
TPS3850-Q1  Automotive, window supervisor for OV & UV monitoring with window watchdog timer & programmable delay  Power management  Sample & Buy View Design Kits & Evaluation Modules
TPS3890-Q1  Automotive Low-Quiescent-Current 1% Accurate Supervisor With Programmable Delay   Power management  Sample & Buy View Design Kits & Evaluation Modules
TPS61240-Q1  Automotive 2.3V to 5.5V Input Range, 3.5 MHz Fixed Frequency 450mA Boost Converter  Step-up (boost)  Sample & Buy View Design Kits & Evaluation Modules
TPS62065-Q1  3MHz, 2A Automotive Step-Down Converter in 2x2 SON Package  Step-down (buck)  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
LM4132-Q1 Download Download
LM73605-Q1 Download Download
TLV1805-Q1 Download Download
TPS3850-Q1 Download Download
TPS3890-Q1 Download Download
TPS61240-Q1 Download Download
TPS62065-Q1 Download Download

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Technical Documents

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User guides (1)
Title Type Size (KB) Date
PDF 13130 29 Nov 2018
Design files (6)
Title Type Size (KB) Date
PDF 358 29 Nov 2018
ZIP 561 29 Nov 2018
PDF 1083 29 Nov 2018
PDF 189 29 Nov 2018
ZIP 1210 29 Nov 2018
PDF 103 29 Nov 2018
Related Tools & Software

Design Kits & Evaluation Modules  ( 1 )

Name Part Number Tool Type
Simulator for automotive cranking pulses evaluation module  AUTOCRANKSIM-EVM  Evaluation Modules & Boards 

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