- Infineon Technologies AG
- NEXT Mobility
Product overview
Infineon's smart power SWITCHES are semiconductor SWITCHES consisting of high-side (PROFET™) and low-side (HITFET™) switches with built-in protection and diagnostic functions. By replacing conventional relays and FUSES or simplifying DISCRETE configurations, they achieve high-speed SWITCHES, short-circuit, overcurrent, and overtemperature protection, restart (retry), current sensing, and more, all on a single chip. For automotive applications, they support a wide range of systems, from 12V/24V/48V, and are available in single- to multi-channel configurations. Families that comply with automotive grade standards based on AEC-Q100 and ISO 26262 (PRO-SIL™) are also available, making them suitable for body systems, power distribution, lighting, heating, motor/solenoid drives, and more.
The high-side PROFET™ range includes PROFET™ +2 for 12V, +12V / +24V / Power PROFET™, the high-performance Load Guard / Wire Guard, and PROFET™ Industrial for industrial applications. They are designed with enhanced diagnostics and protection features, such as RDS(on) 1.2 to 200 mΩ (+2 12V), operation up to 28V, up to 4 channels, and analog current sensing.
Low-side HITFET™ integrates protection functions such as over-temperature, short circuit, over-current, over-voltage, and ESD for 12/24V applications, offering greater reliability and ease of use than DISCRETE FETs.
List of main features and specifications
High side: PROFET™ (representative function)
Protections: Overcurrent limit/trip, overtemperature, short circuit, load dump, reverse polarity, ground loss/ POWER SUPPLIES loss protection, ESD.
Diagnostics: Analog current sensing (kILIS), open load detection (ON/OFF), digital fault feedback.
Examples of our lineup: PROFET™ +2 12V (RDS(on) 1.2 to 200 mΩ, single/double/4ch, AEC-Q100, ISO 26262 Ready), Power PROFET™ (ultra-low on-resistance supports high current loads, ideal for relay/ FUSES replacement).
Voltage range: 12V, 24V, 48V (depending on family).
Low side: HITFET™ (representative function)
Built-in
protection: over temperature, short circuit, over current, over voltage, and ESD. Improved reliability compared to DISCRETE configurations.
Diagnostics: SWITCHES a wide range of automotive/industrial resistive, inductive and capacitive loads.
Product group
For detailed technical information, please visit the Infineon website.
Benefits of implementation
| problems | solution |
|---|---|
| Relay life and size restrictions | Semiconductor technology provides long life, high-speed response, and compact size. Power PROFET™ replaces relays and FUSES in high current applications, significantly reducing power loss and achieving a SWITCHES life of over 1 million cycles. |
| Increasing complexity of wiring and protection | Protection (overcurrent, overtemperature, load dump, etc.) and diagnosis are integrated into a single chip, reducing the number of components and improving reliability. |
| Automotive quality requirements (AEC‑Q/functional safety) | AEC-Q100 and PRO-SIL™ (ISO 26262 Ready/Compliant) families available. |
| Various loads (resistance, inductance, capacity) | Smart protection and diagnostics for lamps, heaters, valves, motors, solenoids, and more. |
Use cases and implementation examples
Use Case 1: Body Control & Zone Power Distribution (BCM/Zone ECU)
[Use case overview]
In recent years, automotive architecture has shifted from a centralized to a zone control type, requiring high reliability and diagnostic functions for power distribution units and body control modules (BCMs). PROFET™ +2 12V features multi-channel configuration and analog current sensing, allowing it to centrally control a variety of loads such as door locks, seat adjustments, lighting, and heaters. It replaces conventional relays and FUSES, reducing the number of components and supporting functional safety.
[Major features]
Load diagnostics with analog current sensing (kILIS)
Overcurrent, overtemperature, and short circuit protection
AEC-Q100 compliant, ISO 26262 Ready
Use Case 2: Relay replacement for lighting and heating loads
[Use case overview]
Loads such as LED headlights and seat heaters have traditionally been driven by relays, but they have had issues with lifespan, response speed, and diagnostic capabilities.
Power PROFET™ replaces relays and FUSES with semiconductors thanks to its ultra-low on-resistance and high current capability. It features automatic shutdown and restart functions in the event of an overload or short circuit, enhancing vehicle safety and reliability.
[Major features]
Ultra-low RDS(on) (up to 1mΩ class) for high current loads
Load dump resistant (up to 43V)
High-speed SWITCHES allows PWM control
Use case 3: Load control for 24V commercial vehicles and construction machinery
[Use case overview]
In 24V systems used in trucks and construction machinery, the risk of overcurrent and overvoltage due to long CABLES and inductive loads is high, making robust protection and diagnostics essential.The PROFET™ +24V series features protection functions optimized for 24V systems and PWM drive compatibility, safely controlling loads such as valves, pumps, and motors.
[Major features]
Overcurrent and overtemperature protection for 24V systems
Load dump resistance for long CABLES lengths
PWM drive support
Inquiry
Related Product Information
LITIX™ Automotive LED DRIVER ICHighly efficient and reliable LED DRIVER IC optimized for automotive lighting. Supports a wide range of applications, from animation lamps to matrix headlamps.
LITIX™ is a family of automotive LED DRIVER ICs that features constant current control and diagnostic and protection functions, making it highly efficient, reliable, and compatible with a wide range of lighting control applications.
- Infineon Technologies AG
- NEXT Mobility
OPTIREG™ Automotive Voltage RegulatorsHighly reliable and efficient POWER SUPPLIES solutions optimized for automotive ECUs. LDO, DC-DC, and PMIC support a wide range of applications from ADAS to body control.
This is a highly reliable and efficient POWER SUPPLIES IC family for automotive ECUs, and includes LDO, DC-DC, and PMIC, achieving both safety and efficiency.
- Infineon Technologies AG
- ICT and Industrial
- Smart Factories and Robotics
CoolSET™ AC-DC Integrated Power IC High efficiency AC-DC POWER SUPPLIES IC integrating a PWM controller and high voltage MOS FETS. Compact, highly reliable, and simplifies SMPS design.
This highly efficient AC-DC POWER SUPPLIES IC integrates a PWM controller and high-voltage MOS FETS, simplifying design and improving reliability.
- Infineon Technologies AG
- ICT and Industrial
- Smart Factories and Robotics
Automotive Transceiver Highly reliable and durable CAN/LIN communication ensures safety and efficiency of next-generation automotive networks.
Infineon's automotive transceivers offer high durability and high-speed communication, and support CAN FD and LIN, making in-vehicle networks safer and more efficient.
- Infineon Technologies AG
- NEXT Mobility
XENSIV™ Angle Sensor (GMR/AMR/TMR) High-precision angle detection from 0 to 360° with automotive-grade reliability and functional safety. The definitive magnetic angle sensor that accelerates design for steering/EPS, xEV drive, and ACTUATORS.
XENSIV™ angle sensors use GMR/AMR/TMR technology to achieve automotive-grade high-precision angle detection and functional safety.
- Infineon Technologies AG
- NEXT Mobility
XENSIV™ MEMS Microphone MEMS technology for clear audio experiences in everything from cars to smart devices
XENSIV™ MEMS microphones feature high SNR and wide dynamic range, enabling a clear voice experience and highly accurate voice processing in vehicles and smart devices.
- Infineon Technologies AG
- NEXT Mobility
- ICT and Industrial
- Smart Factories and Robotics
Link to Related Technical Columns
What is ELECTRIC CURRENT SENSORS for your purpose? | Infineon Technologies Technical Column
This article explains the role and types of ELECTRIC CURRENT SENSORS, which are indispensable in everyday life and industrial sites. ELECTRIC CURRENT SENSORS are important elements for confirming the normal operation of equipment, and we will also introduce in detail points to note when selecting a current sensor and detection methods.
Understand the characteristics of IPDs and make effective use of them | Infineon Technologies Technical Column
Explain the role and characteristics of high-performance semiconductor SWITCHES IPD and its differences from MOS FETS. By understanding the advantages and disadvantages, you can learn the key points for selecting the best device for your application.
What is POWER SUPPLIES IC? | Infineon Technologies Technical Column
Explains basic knowledge of POWER SUPPLIES IC, types, and merits of introduction. Learn about the role and importance of power supply, which is essential for electrical products, and learn more about selection points for efficient power management.
Knowing more about MOS FETS will make your work even easier! | Infineon Technologies Technology Column
Learn about MOS FETS in detail, from their basics to their operation and selection methods. Understand their important role and applications in electrical circuits, and use them to improve your work efficiency.
What is a motor driver? Explaining its uses and features | Infineon Technologies Technical Column
This article explains the importance of motor drivers and their types. It introduces the features of brushed, brushless DC, and stepping motor drivers, and briefly summarizes the key points for selection and the benefits of adopting one.