ADAS power reference design with improved voltage supervision


Design files


This automotive power reference design supports 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 monitor each rail for improved supervision that can help customers achieve functional safety goals.

  • 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 (approximately 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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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDUEE3.PDF (13130 K)

Reference design overview and verified performance test data


Detailed schematic diagram for design layout and components


Complete listing of design components, reference designators, and manufacturers/part numbers


Detailed overview of design layout for component placement

TIDRXT8.ZIP (1210 K)

Files used for 3D models or 2D drawings of IC components

TIDCF18.ZIP (561 K)

Design file that contains information on physical board layer of design PCB

TIDRXU0.PDF (1083 K)

PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Supervisor & reset ICs

TPS3703-Q1Automotive high-accuracy window supervisor with reset time delay

Data sheet: PDF | HTML
Supervisor & reset ICs

TPS3850-Q1Automotive, window supervisor for OV & UV monitoring with window watchdog timer & programmable delay

Data sheet: PDF | HTML
Supervisor & reset ICs

TPS3890-Q1Automotive low-quiescent current 1% accuracy supervisor with programmable delay

Data sheet: PDF | HTML
Boost converters (integrated switch)

TPS61240-Q12.3-V to 5.5-V input range, 3.5-MHz fixed frequency 450-mA boost converter, AEC-Q100 qualified

Data sheet: PDF | HTML
Buck converters (integrated switch)

LM73605-Q1Automotive qualified 3.5-V to 36-V, 5-A synchronous step-down voltage converter

Data sheet: PDF | HTML
Buck converters (integrated switch)

TPS62065-Q13MHz, 2A Automotive Step-Down Converter in 2x2 SON Package

Data sheet: PDF | HTML

TLV1805-Q1Automotive high volt comparator with push-pull output and shutdown

Data sheet: PDF | HTML
Series voltage references

LM4132-Q1Automotive, SOT-23 precision low dropout voltage reference

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Design guide ADAS Power Reference Design with Improved Voltage Supervision Nov. 29, 2018

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