High-side switch controllers
Solutions for power distribution and load protection
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High-side smart power switches and controllers drive capacitive, inductive and resistive loads across automotive and industrial applications. TI's portfolio includes internal-FET and external-FET configurations, providing robust protection and diagnostics across a wide range of load currents. Smart eFuse high-side switches, available in both FET configurations, include additional I2T-based overcurrent protection for protecting wire harnesses. TI's high-side portfolio includes single, dual, and quad-channel configurations with parallel and serial interfaces. Our 12V, 24V and 48V portfolios are tailored to support automotive zone, body, and battery management systems, as well as industrial automation, humanoid robotics and energy infrastructure.
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Select a high-side switch or controller for your design
Key technologies of high-side power switches
48V power distribution
Accelerate 48V hardware development with optimized smart power switches
With the next generation of architectures requiring more power, 48V power distribution enable higher efficiency and reduced weight across automotive systems. TI high-side switches and controllers offer robust protection and diagnostics across a wide range of load currents and system requirements.
Wire harness protection with I2T
Harness the power of integrated wire protection
With the growing power demands of modern vehicles there is a need for greater optimization in energy and material usage, especially as OEMs move to modern zone architectures. The smart eFuse high-side switch enables power and material savings with its integrated and programmable I2T overcurrent protection curve. This variable curve replicates the energy limits of traditional melting fuses but uses instant-read current sense. The advantage of this solution is multifold:
- Instant protection as opposed to a fuse's thermal latency.
- Software-resettable fuse that does not need to be physically replaced.
- Fuse protection decentralized from the fuse box.
How eFuses are helping drive the zone architecture revolution for software-defined vehicles
HSS-SMART-CONFIGURATOR
Adjustable current limiting
Simplify your system by reducing PCB traces and eliminating external sensing components
TI high-side switches help protect against high inrush current, overload and short-circuit conditions with adjustable current limiting. Integrating the adjustable current limit reduces PCB traces and connector sizes to lower your system costs. Additionally, accurate current sensing enables real-time monitoring of system loads through open load detection without calibration and eliminates the need for additional sensing components.
Adjustable Current Limit of Smart Power Switches (Rev. B)
High Accuracy Current Sense of Smart High Side Switches
Flexible external FET solutions
Scale with flexible high-side switch controllers
High-side switch controllers help build scalable, efficient and safe power distribution systems. By driving external MOSFETs, high-side switch controllers seemlessly scale across a wide range of voltages and currents. Our portfolio features strong and fast gate control, fault detection and diagnostic reporting to protect loads and enhance system relability. TI high-side switch controllers support flexible configurations with MOSFETs connected in parallel for higher current capabilitly or back-to-back for reverse current blocking. They are available in single or dual gate drive architectures to meet diverse applications like low-power operating modes.
Serial interface
Reduce control signals and enable greater customization
TI's high-side switch portfolio offers two control methods: GPIO or Serial Peripheral Interface (SPI). SPI enables greater customization, allowing the user to control functions like:
- Enabling the switches and diagnostics.
- Measuring voltage, current and temperature.
- Managing faults.
- Configuring the current limit and inrush current time.
High-side switches with SPI often integrate an analog-to-digital converter (ADC) to enable the measurement and reporting of signals like temperature, supply voltage and output voltage. The ability to report current-sense data and fault information via SPI helps users identify problems quickly and analyze potential root cause.
Decrease factory downtime in 24-VDC power distribution with advanced load diagnostics
Reducing System Bill of Materials and MCU Pin Requirements With SPI eFuse Switches (Rev. A)
Technical resources
How To Drive Resistive, Inductive, Capacitive, and Lighting Loads (Rev. E)
Achieving Reverse Battery Protection Using TI High Side Switch Controllers (Rev. A)
Adjustable Current Limit of Smart Power Switches (Rev. B)
Discover featured applications
Optimize automotive power distribution from battery to load
Increased automotive electrical demands require zonal modules that accommodate a wide range of power needs. Our high-side switches, controllers and smart eFuse high-side switches enable a robust, efficient and flexible design. Our devices and resources are space and weight conscious helping to reduce cabling and replace melting fuses.
Benefits:
- Balanced between thermal performance and form factor.
- Replacing discrete relays and fuses to optimize vehicle cabling.
- Complete fault and diagnostic reporting.
Featured resources
- TIDA-020079 – Zone reference design
- TIDA-020065 – Smart fuse high side switch controller reference design
- TPS2HCS08-Q1 – Automotive, dual-channel 8.9mΩ smart high-side switch with I2T wire protection, low-Iq mode and SPI
- TPS2HC08-Q1 – Automotive, 9.7mΩ, 7.5A dual-channel smart high-side switch
- TPS1212-Q1 – Automotive 74V low-Iq high-side driver with bidirectional current monitoring, I2t and diagnostics
- HSS-HCMOTHERBRDEVM – Smart-fuse motherboard
Build reliable 48V power distribution in automotive applications with integrated protection and diagnostics for any load
Rising 48V demands in modern automotive systems require intelligent switching solutions for zone and power distribution architectures. Our 48V high-side switches support efficient, reliable load control while reducing system complexity and material weight, enabling smarter, lighter designs.
Benefits:
- 70V input voltage tolerance for resilience against 48V transients.
- High thermal density packaging for compact footprints and smaller board designs.
- Enables cable reduction and connector material weight.
- Integrated fault detection and load protection enhance system reliability.
Featured resources
- TPS482H85-Q1 – Automotive, 48V, 85-mΩ dual-channel smart high-side switch
- TPS1HTC100-Q1 – Automotive, 60V, 4A, 83mΩ one-channel smart high-side switch with adjustable current limit
- TPS1HTC30-Q1 – Automotive, 60-V, 6-A, 30-mΩ, one-channel smart high-side switch with adjustable current limit
Distribute 24V across the factory floor & drive digital outputs in programmable logic controllers
Our high-side switches offer smart solutions for enabling smaller and more power-efficient factory modules with increased power density. SPI and integrated ADC enable predictive maintenance and resolution, ensuring that downtime is planned and minimized. TI also offers high-side switch controllers for high-current load driving and circuit breaking.
Benefits:
- Adjustable current limiting and current sensing for protecting and diagnosing load events like wire break and short circuits.
- Inductive discharge clamping for reliably driving inductive loads (or loads connected by long cables).
Featured resources
Accommodate higher battery voltages and provide accurate monitoring
As the automotive industry moves toward hybrid electric vehicles (HEVs) and electric vehicles (EVs), efficient battery management becomes the primary engineering challenge. Our high-side switches have the features and protections necessary for overcoming battery-monitoring design and control challenges.
Benefits:
- Feedback that enables efficient control and battery balancing.
- Built-in system redundancies to help prevent failure.
- Overload, short-circuit and reverse-battery protection.
Featured resources
- TPS1210-Q1 – Automotive, 45V low-Iq dual high-side driver with short circuit protection and diagnostics
- TPS1200-Q1 – Automotive, 45V low-Iq high side driver with protection and diagnostics
- TPS1HC30-Q1 – Automotive, 30-mΩ, 5-A single-channel smart high-side switch
Power distribution and circuit breaking for collaborative, mobile and humanoid robots
TI high-side power switches distribute power in a variety of robotic systems. High-side switches drive digital outputs, tools and holding brakes while high-side switch controllers act as circuit breakers. Smart eFuse high-side switches protect wire harnesses in space-constrained humanoids.
Benefits:
- Adjustable current limiting and current sensing for protecting and diagnosing load events like wire breaks, short circuits and overload currents.
- Bidirectional current monitoring and I2T-based overcurrent protection provide specialized diagnostic and protections for mobile and humanoid robots.
Featured resources
- TIDA-01600 – Smart brake control and diagnostics reference design for servo drives and robotics
- TPS274160 – 36-V, 160-mΩ, 1.35-A, 4-ch, Industrial high-side switch with adjustable current limit
- TPS4811-Q1 – Automotive, 3.5V to 100V high-side driver with protection and diagnostics
- TPS4812-Q1 – Automotive 100V low IQ high-side driver with bi-directional current monitoring, I2t, and diagnost
- TPS274160EVM – TPS274160 evaluation module with accurate current sensing capability
- TPS48111Q1EVM – TPS48111-Q1 evaluation module for smart high-side driver
- TPS4812Q1EVM – TPS48120QRGERQ1 evaluation module for smart high-side controller
Keep agricultural vehicles, construction equipment or logistics systems running with minimal downtime
Our high-side portfolio offers automotive-qualified solutions for 12V, 24V and 48V batteries. A broad selection of ON-resistances and external-FET options accommodate the variety of load currents in a power distribution unit. High-side switch controllers act as circuit breakers around DC/DC converters and batteries.
Benefits:
- Adjustable current limiting and current sensing for protecting and diagnosing events like wire breaks and short circuits.
- Inductive discharge clamping and two-level inrush current limiting for reliably driving inductive and capacitive loads like valves and HMI modules.
Featured resources
- TPS482H85-Q1 – Automotive, 48V, 85-mΩ dual-channel smart high-side switch
- TPS1HTC100-Q1 – Automotive, 60V, 4A, 83mΩ one-channel smart high-side switch with adjustable current limit
- TPS4800-Q1 – Automotive, 100V low-Iq high side driver with protection and diagnostics
Design & development resources
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 (...)
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 (...)
TPS274C65 evaluation module for quad-channel 65-mΩ ON-resistance high-side switch
The TPS274C65EVM is a hardware evaluation module (EVM) used to enable hardware engineers to evaluate the full performance and functionality of the TPS274C65 high-side switch.