Reset & watchdog ICs
Reset and watchdog ICs for MCUs, MPUs, FPGAs and SoCs
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Our comprehensive portfolio of reset and watchdog integrated circuits (ICs) keep microcontrollers (MCUs), microprocessors (MPUs), field-programmable gate arrays (FPGAs) and systems-on-a-chip (SoCs) reliable and safe. These devices monitor supply voltages and system conditions to ensure that processors always start or recover to a known state. By generating reset signals during faults and providing watchdog timers, reset and watchdog ICs help prevent unexpected failures, protect critical circuits, and maintain dependable system performance for a range of applications.
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Single-channel
Multichannel
Watchdog timer
TI Functional Safety-Compliant
Push-button reset IC
Power trends
High precision
Our high-accuracy supervisors and reset ICs enable better regulation in power supplies and safer operation in critical grid infrastructure, motor drive and industrial automation systems.
Voltage supervisors 101
Streamlining Functional Safety Certification in Automotive and Industrial
What is a watchdog timer and why is it important?
Featured products for high precision
Low quiescent current (IQ)
Achieve ultra-low quiescent current (IQ) without giving up system performance with our wide portfolio of voltage supervisors and reset integrated circuits (ICs). Our low-IQ supervisors provide continuous voltage and power-rail monitoring while operating at low standby power, enabling longer battery run times, faster dynamic response times and a small form factor, all while maintaining ultra-low quiescent power consumption.
Featured products for low quiescent current (IQ)
Technical resources
Voltage Supervisor and Reset ICs: Tips, Tricks and Basics
Voltage Supervisors (Reset ICs) Quick Reference Guide (Rev. H)
Voltage Supervisors (Reset ICs): Frequently Asked Questions (FAQs) (Rev. A)
Discover featured applications
Ensure system reliability in factory automation by adding a flexible supply-voltage supervisor with an integrated watchdog timer
For programmable logic controller field transmitters or industrial PC designs, microcontroller power rails need voltage monitoring to ensure power within regulation specifications, ensuring system safety.
Benefits:
- Programmable sense-and-reset delay for high-voltage rails
- Manual reset capability to force system resets
- Separate VDD and SENSE pins add redundancy to high-reliability systems
- Functional safety ratings up to Safety Integrity Level (SIL) 3 and SIL 4
Featured resources
- TIDA-010049 – TUV-assessed digital input reference design for IEC 61508 (SIL-2)
- TIDEP0020 – AM437x Discrete Power Reference Design
- TIDEP0050 – EnDat 2.2 System Reference Design
Enable functional safety for ADAS applications with our precision multichannel voltage supervisors
In integrated ADAS, monitoring power rails for processors and microcontrollers (MCU) helps prevent brownout from irregular voltage-output conditions. Our portfolio of low-power supervisors help ensure system safety by alerting the MCU during an over- or undervoltage event.
Benefits:
- Multichannel monitoring allows for precise power control on complex designs
- Window detection for systems requiring over- and undervoltage monitoring
- Watchdog feature prevents processing glitches and ensures continuous device functionality
- Support for functional safety requirements up to ASIL D
Featured resources
- TIDA-050008 – ADAS power reference design with improved voltage supervision
- TIDA-00530 – Automotive Power Reference Design for Low Power TDA3x Based Systems
- TPS3704-Q1 – Automotive multichannel window supervisor with high accuracy and compact form factor
- TPS38700-Q1 – Automotive power-supply sequencer with I²C support for up to 12 channels
- TPS389006-Q1 – Automotive multichannel overvoltage and undervoltage I²C programmable voltage supervisor and monitor
Design reliable motor drives with wide-VIN multichannel supervisors
Motor drives require proper regulation for their power supplies as well as precise sensing for accurate position and torque control. Use our low-current voltage supervisors to monitor core voltage rails and reliable operation without draining power.
Benefits:
- VIN options up to 65 V with the TPS37 and TPS38
- Multichannel monitoring available
- Adjustable and fixed-sense inputs for high-voltage rails
- Programmable time delay for sequencing flexibility
Featured resources
- TIDEP0020 – AM437x Discrete Power Reference Design
- TIDM-SERVODRIVE – Industrial Servo Drive and AC Inverter Drive Reference Design
- High Voltage – Fast Power Fault Detection by Monitoring 24V AC Systems Using TPS – Application brief
Optimize energy storage system designs using voltage supervisors and watchdog timers
Energy storage systems rely on voltage supervisors to monitor power rails and assert reset signals when necessary. Our voltage supervisors include low quiescent current (IQ), high precision and exceptional programmability.
Benefits:
- Watchdog timers increase system reliability in the event of an microcontroller malfunction
- Window voltage monitoring for systems requiring over- and undervoltage monitoring
- Minimize power consumption by maintaining ultra-low IQ on up to four channels
Featured resources
- TIDA-01214 – Isolated, High-Accuracy Analog Input Module Reference Design Using 16-Bit ADC and Digital Isolator
- TIDA-010041 – Nano power, wide VIN (12 V max) supervisor reference design used as comparator or power sequencer
- TIDA-010052 – Safety power supply for motor drives reference design
- Voltage Monitoring with Programmable Reset Assertion Timing Using the TPS3899 – Application brief
Enhance system stability in EVs and comply with functional safety requirements using flexible, high-precision voltage supervisors
Voltage supervisors are imperative when monitoring system health in high-reliability automotive systems where functional safety is paramount. Our voltage supervisors include low quiescent current (IQ), high precision and high programmability.
Benefits:
- Window voltage monitoring for systems requiring over- and undervoltage monitoring
- Minimize power consumption by maintaining ultra-low IQ on up to four channels
- Programmable reset delays and window watchdog timing options enable customization
- Support for functional safety requirements up to Automotive Safety Integrity Level (ASIL) D
Featured resources
- TIDA-01168 – Bidirectional DC/DC Converter Reference Design for 12-V/48-V Automotive Systems
- TIDA-020014 – HEV/EV traction inverter power stage with 3 types of IGBT/SiC bias-supply solutions reference design
- PMP22650 – GaN-based, 6.6-kW, bidirectional, onboard charger reference design
- TPS3850-Q1 – Automotive, window supervisor for OV & UV monitoring with window watchdog timer & programmable delay
- TPS3704-Q1 – Automotive multichannel window supervisor with high accuracy and compact form factor
- TPS37-Q1 – Automotive 65-V window supervisor with ultra-low quiescent current and time-delay function
- How voltage references and supervisors help achieve ASIL functional safety goals – Technical article
Advance power efficiency for body control modules with compact, wide-VIN supervisors
In body control modules and automotive gateways, reset integrated circuits (ICs) ensure power efficiency and early detection for irregular voltage output conditions. Our supervisors help meet your system needs at some of the industry's fastest detection speeds.
Benefits:
- VIN options up to 65 V with the TPS37-Q1
- Window voltage monitoring for systems requiring over- and undervoltage monitoring
- Programmable reset and sense delay timing for more configurability
- Separate VDD and sense pins enable the monitoring of voltages higher and lower than VDD
Featured resources
- TIDA-01168 – Bidirectional DC/DC Converter Reference Design for 12-V/48-V Automotive Systems
- TIDA-00699 – Front End Power Supply Reference Design with Cold Crank Operation, Transient Protection, EMI Filter
- TPS37-Q1 – Automotive 65-V window supervisor with ultra-low quiescent current and time-delay function
- TPS389006-Q1 – Automotive multichannel overvoltage and undervoltage I²C programmable voltage supervisor and monitor
- TPS3704-Q1 – Automotive multichannel window supervisor with high accuracy and compact form factor
- How voltage references and supervisors help achieve ASIL functional safety goals – Technical article
Design & development resources
TPS38900x threshold voltage tool
TPS389006 evaluation module for multichannel, overvoltage and undervoltage, I²C voltage supervisor
The TPS389006Q1 evaluation module (EVM) is a platform for evaluating the six-channel TPS389006-Q1, which is an integrated overvoltage and undervoltage supervisor with I2C programmability. TPS389006-Q1 is available in a 16-pin very-thin quad flatpack no-lead (WQFN) package. In addition, (...)
TPS36 evaluation module for nano-quiescent-current precision supervisor
The TPS36Q1EVM is an evaluation module (EVM) for the TPS3435-Q1, TPS3436-Q1, TPS35-Q1 and TPS36-Q1 voltage supervisors. This family of automotive-grade products has support for undervoltage-supervisor and watchdog functionality. Please refer to each product's data sheet for specific functions.
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New products
Radiation-hardened four-channel supervisor with watchdog and open-drain outputs
Radiation-hardened four-channel supervisor with watchdog and push-pull outputs
Radiation-hardened two-channel window supervisor with watchdog and open-drain outputs
Radiation-hardened, QMLV, 3V to 14V, 4-channel supervisor with watchdog timer