Smart eFuse high-side switches

Bringing precision, efficiency, and safety to modern automotive zone architectures

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Our smart eFuse high-side switch portfolio with I2T configurability delivers precise diagnosis and fast response to provide wire-harness protection in zone control and power distribution applications. TI's eFuse high-side switches support flexible load settings, reduce system complexity and hardware variation. The digital interface enables over-the-air updates, making these devices core building blocks of the software-defined vehicle.

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Related categories

High-side switches

Learn more about TI's broad portfolio of high-side switches for driving off-board loads across automotive and industrial applications.

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High-side switch controllers

For high current loads, browse our high-side switch controllers.

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Build smarter and safer automotive power distribution

Software-defined fuse

Configurable I²T enables precise, fast-acting fault protection tailored to automotive zone needs—boosting safety, efficiency, and system reliability under all load conditions.

Better energy efficiency

As power budgets become more constrained, our smart eFuse high-side switches cut power loss to enable more energy-efficient zone controllers.

Comprehensive fault protection and granular diagnostics

With a digital interface, integrated ADC, and fault log, the smart eFuse high-side switches better inform predictive maintenance systems and enables centralized fault management in zone architectures.

Smart, scalable cross-platform power distribution

Our smart eFuse high-side switches offer scalable protection, remote reprogramming, and enhanced serviceability—enabling over-the-air updates and streamlined design across zonal vehicle platforms.

Technical Resources

Application brief

New TPS2HCS10-Q1 Switch Solves Challenges to Smart Power Distribution in Zone Co

Learn more about our fully software configurable high-side switch for power distribution applications in zone controllers.

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White paper

Software-Defined Vehicles Shift the Future of Automotive Electronics Into Gear (Rev. B)

Discover how software-defined vehicles are shifting the future of automotive electronics into gear.

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Application note

Basics of High-Side Switches and Controllers

Explore the features and capabilities of TI’s high-side switch and controller portfolio in this introductory overview.

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Design & development resources

Evaluation board

Smart-fuse motherboard

The HSS-HCMOTHERBRDEVM and corresponding daughter cards (such as the HSS-2HCS10EVM) are used to showcase and evaluate all features of the Texas Instruments' smart-fuse high-side switch portfolio. The motherboard is designed to be used with several different daughtercards enabling the use of a (...)

Daughter card

Unpopulated daughtercard for smart-fuse switches

The HSS-HCS-BLANKEVM is a daughtercard designed to be used with the HSS-HCMOTHERBRDEVM. This daughtercard shows the functionality of our smart fuse portfolio.

Evaluation board

TPS48120QRGERQ1 evaluation module for smart high-side controller

The TPS4812Q1EVM allows reference circuit evaluation of TI's TPS4812-Q1 smart high-side driver. The TPS4812-Q1 is a 3.5V to 95V smart high-side controller and has two strong 2A gate drivers with separate control inputs allowing multiple configurations including a low power path mode, with auto load (...)