Smart power switches

Infineon's comprehensive and innovative portfolio of low and high-side smart power switches for automotive and industrial applications

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Smart power switches for automotive and industrial applications

A smart power switch is a high-performance power MOSFET switch that controls electrical circuits while offering intelligent protection, load control, and diagnosis capabilities.

  • Looking for reliable power distribution? Infineon's intelligent power switch portfolio features low and high-side power distribution switch ICs for 12 V, 24 V, and 48 V systems – ideal for automotive power switch and industrial smart switch applications.
  • Need to replace traditional fuses and relays? Our power MOSFET switch circuit solutions deliver fast switching, advanced diagnosis, current sensing, and restart capability with higher reliability.
  • Want comprehensive protection? Infineon's switches guard against short-circuit, overcurrent, and overtemperature, including high voltage MOSFET switch variants for demanding conditions.

When compared to conventional switching solutions, Infineon's intelligent power switches for automotive applications are designed for functional safety (ISO 26262), ensuring the highest standards of performance and reliability.

Find the smart power switch product that matches your needs.

High-side smart power switches for automotive and industrial use

Infineon’s PROFET™ protected high-side MOSFET power switches deliver robust solutions for automotive power switch and industrial smart switch applications, available as single and multi-channel devices – including dedicated PROFET™ + 48 V variants for 48 V electric and mild hybrid vehicles.

The PROFET™ family supports 12 V, 24 V, and 48 V power distribution switch requirements, replacing classic fuses and relays with fast µs switching and comprehensive protection against overload, overvoltage, short-circuit, overtemperature, ground loss, and power supply loss. Select families also protect against dynamic overvoltage such as load dump and inductive load turn-off.

PROFET™ Guard is our most advanced intelligent smart power switch for automotive power distribution, addressing  functional safety requirements (ISO 26262).  Classic PROFET™ brings decades of proven reliability with optional integrated current sensing. PROFET™ +2 extends this with state-of-the-art current sense accuracy and single, dual, and four-channel options.

PROFET™ Industrial delivers outstanding energy robustness for demanding industrial applications.

Discover our high-side smart power switches

Low-side smart power switches for automotive and industrial use

Infineon's low-side smart power switch portfolio features two main product families: Classic HITFET™ and HITFET™ + for 12 V and 24 V automotive and industrial applications.

HITFET™ (Highly Integrated Temperature-protected FET) is Infineon's intelligent power switch solution for low-side power distribution. Built-in protective features guard against overcurrent, overvoltage, short-circuit, overtemperature, and electrostatic discharge (ESD). The Classic HITFET™ delivers high energy capability with RDS(on) down to 10 mΩ, making it ideal for demanding power MOSFET switch circuit applications, body control modules, solenoid and valve control, and exterior lighting.

The HITFET™ + family offers compact package sizes with optimized short-circuit robustness, efficient power dissipation for high-speed PWM applications, and comprehensive diagnosis – perfect for space-critical automotive and industrial designs including motor control, HVAC systems, and power distribution.

Find your low-side smart power switches

Multichannel smart power switches and controllers with SPI

Infineon's multichannel smart power portfolio with SPI supports a wide range of automotive and industrial applications across five main product families. 

SPIDER products include multichannel SPI drivers for low-current loads such as LEDs, low-power bulbs, and stepper motors, providing flexible channels and configuration options. The SPIDER+ family delivers enhanced performance with increased configuration capabilities. Both families are highly scalable for PWM inputs and current requirements. 

The Infineon FLEX family offers a fully scalable, multichannel, low-side intelligent power switch solution with SPI, integrated protection features, and advanced diagnosis – ideal for power distribution switch IC applications.

SPOC™ +2 is the latest generation of high-side multichannel smart power switches with a serial interface, featuring configurable features such as slew-rate control and intelligent restart strategy. Its SPI interface enables the connection of multiple devices via daisy-chain configuration to reduce the amount of GPIOs. 

Explore our multichannel SPI switches & controller

Gate driver ICs for automotive power distribution

Infineon’s EiceDRIVER™ APD gate driver IC family supports automotive power switch applications across 12 V, 24 V, and 48 V supply voltages. These power distribution switch ICs feature one or two gate output channels, designed to drive multiple MOSFETs in parallel.

With simultaneous switching times in the µs range, EiceDRIVER™ APD products significantly improve power net reliability compared to classic fuses. Their low power consumption offers distinct advantages over traditional relays, while integrated protection mechanisms (e.g., wire protection) and comprehensive diagnosis ensure robust performance.

These intelligent power switch automotive solutions are ideal for high voltage MOSFET switch applications where precise control and reliability are critical. The EiceDRIVER™ APD family enables engineers to implement advanced power MOSFET switch circuits with confidence, supporting functional safety requirements in modern vehicle architectures.

Explore our EiceDRIVER™ APD gate drivers

Infineon Smart Power Switches and Gate Driver Tool Suite

Infineon offers comprehensive design-in materials, including application notes, evaluation boards, PCB design data, simulation models, and online simulations. You can find these resources on each product page in the "Design Support" section. Additionally, Infineon provides a dedicated tool suite for Smart Power Switches and Gate Driver ICs for automotive power distribution.

Infineon Smart Power Switches and Gate Driver Tool Suite supports system architects and hardware designers from conception to realization. Use the “Finder and Selection” tools to identify the right smart power switch, intelligent power switch, or gate driver IC for your specific load requirements.

“Simulation & Modelling” tools enable you to evaluate various application scenarios for power MOSFET switch circuits and power distribution switch designs. Document results with the report tool and verify configurations using the evaluation boards and “Configuration” tools.

Facing a design challenge? The Infineon Developer Community connects you with engineers worldwide 24-7. Get expert support from Infineon engineers and expert members to solve your automotive power switch and industrial smart switch design challenges.

To the Tool Suite
To the Developer Community

Smart power switches for automotive and industrial applications

A smart power switch is a high-performance power MOSFET switch that controls electrical circuits while offering intelligent protection, load control, and diagnosis capabilities.

  • Looking for reliable power distribution? Infineon's intelligent power switch portfolio features low and high-side power distribution switch ICs for 12 V, 24 V, and 48 V systems – ideal for automotive power switch and industrial smart switch applications.
  • Need to replace traditional fuses and relays? Our power MOSFET switch circuit solutions deliver fast switching, advanced diagnosis, current sensing, and restart capability with higher reliability.
  • Want comprehensive protection? Infineon's switches guard against short-circuit, overcurrent, and overtemperature, including high voltage MOSFET switch variants for demanding conditions.

When compared to conventional switching solutions, Infineon's intelligent power switches for automotive applications are designed for functional safety (ISO 26262), ensuring the highest standards of performance and reliability.

Find the smart power switch product that matches your needs.

High-side smart power switches for automotive and industrial use

Infineon’s PROFET™ protected high-side MOSFET power switches deliver robust solutions for automotive power switch and industrial smart switch applications, available as single and multi-channel devices – including dedicated PROFET™ + 48 V variants for 48 V electric and mild hybrid vehicles.

The PROFET™ family supports 12 V, 24 V, and 48 V power distribution switch requirements, replacing classic fuses and relays with fast µs switching and comprehensive protection against overload, overvoltage, short-circuit, overtemperature, ground loss, and power supply loss. Select families also protect against dynamic overvoltage such as load dump and inductive load turn-off.

PROFET™ Guard is our most advanced intelligent smart power switch for automotive power distribution, addressing  functional safety requirements (ISO 26262).  Classic PROFET™ brings decades of proven reliability with optional integrated current sensing. PROFET™ +2 extends this with state-of-the-art current sense accuracy and single, dual, and four-channel options.

PROFET™ Industrial delivers outstanding energy robustness for demanding industrial applications.

Discover our high-side smart power switches

Low-side smart power switches for automotive and industrial use

Infineon's low-side smart power switch portfolio features two main product families: Classic HITFET™ and HITFET™ + for 12 V and 24 V automotive and industrial applications.

HITFET™ (Highly Integrated Temperature-protected FET) is Infineon's intelligent power switch solution for low-side power distribution. Built-in protective features guard against overcurrent, overvoltage, short-circuit, overtemperature, and electrostatic discharge (ESD). The Classic HITFET™ delivers high energy capability with RDS(on) down to 10 mΩ, making it ideal for demanding power MOSFET switch circuit applications, body control modules, solenoid and valve control, and exterior lighting.

The HITFET™ + family offers compact package sizes with optimized short-circuit robustness, efficient power dissipation for high-speed PWM applications, and comprehensive diagnosis – perfect for space-critical automotive and industrial designs including motor control, HVAC systems, and power distribution.

Find your low-side smart power switches

Multichannel smart power switches and controllers with SPI

Infineon's multichannel smart power portfolio with SPI supports a wide range of automotive and industrial applications across five main product families. 

SPIDER products include multichannel SPI drivers for low-current loads such as LEDs, low-power bulbs, and stepper motors, providing flexible channels and configuration options. The SPIDER+ family delivers enhanced performance with increased configuration capabilities. Both families are highly scalable for PWM inputs and current requirements. 

The Infineon FLEX family offers a fully scalable, multichannel, low-side intelligent power switch solution with SPI, integrated protection features, and advanced diagnosis – ideal for power distribution switch IC applications.

SPOC™ +2 is the latest generation of high-side multichannel smart power switches with a serial interface, featuring configurable features such as slew-rate control and intelligent restart strategy. Its SPI interface enables the connection of multiple devices via daisy-chain configuration to reduce the amount of GPIOs. 

Explore our multichannel SPI switches & controller

Gate driver ICs for automotive power distribution

Infineon’s EiceDRIVER™ APD gate driver IC family supports automotive power switch applications across 12 V, 24 V, and 48 V supply voltages. These power distribution switch ICs feature one or two gate output channels, designed to drive multiple MOSFETs in parallel.

With simultaneous switching times in the µs range, EiceDRIVER™ APD products significantly improve power net reliability compared to classic fuses. Their low power consumption offers distinct advantages over traditional relays, while integrated protection mechanisms (e.g., wire protection) and comprehensive diagnosis ensure robust performance.

These intelligent power switch automotive solutions are ideal for high voltage MOSFET switch applications where precise control and reliability are critical. The EiceDRIVER™ APD family enables engineers to implement advanced power MOSFET switch circuits with confidence, supporting functional safety requirements in modern vehicle architectures.

Explore our EiceDRIVER™ APD gate drivers

Infineon Smart Power Switches and Gate Driver Tool Suite

Infineon offers comprehensive design-in materials, including application notes, evaluation boards, PCB design data, simulation models, and online simulations. You can find these resources on each product page in the "Design Support" section. Additionally, Infineon provides a dedicated tool suite for Smart Power Switches and Gate Driver ICs for automotive power distribution.

Infineon Smart Power Switches and Gate Driver Tool Suite supports system architects and hardware designers from conception to realization. Use the “Finder and Selection” tools to identify the right smart power switch, intelligent power switch, or gate driver IC for your specific load requirements.

“Simulation & Modelling” tools enable you to evaluate various application scenarios for power MOSFET switch circuits and power distribution switch designs. Document results with the report tool and verify configurations using the evaluation boards and “Configuration” tools.

Facing a design challenge? The Infineon Developer Community connects you with engineers worldwide 24-7. Get expert support from Infineon engineers and expert members to solve your automotive power switch and industrial smart switch design challenges.

To the Tool Suite
To the Developer Community

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