PROFET™ Wire Guard 12V – automotive smart high-side switch

About PROFET™ Wire Guard 12 V

The PROFET™ Wire Guard portfolio is characterized by standalone hardware-based wire protection via integrated I²t calculation functions, selectable according to the wire profile and system requirements. This precise, fast, and reliable protection characteristics by hardware enables simple fuse replacement in modern power distribution and therefore, wire harness optimization in terms of cost and weight plus PCB space savings. With the automatic idle mode, the devices offer full-load control and self-protection functionality in key-off mode, with minimized power consumption. In combination with the adjustable overcurrent threshold, the PROFET™ Wire Guard accurately provides fast failure isolation towards the system power supply for safety-relevant applications. The sequential diagnosis provides detailed status feedback via one single pin. With the capacitive load-switching mode, a broad range of capacitive loads can be charged in the safe operating area. The PROFET™ Wire Guard family is developed according to ISO 26262 and a safety manual is provided for the integration in automotive safety applications.

Smart Power Switches and Gate Driver Tool Suite

Benefits of PROFET™ Wire Guard 12 V in automotive power distribution

Decentralized, dependable automotive power distribution demands reliable solutions for wire harness protection, replacing melting fuses and reducing weight and complexity of wiring harnesses. PROFET™ Wire Guard integrates hardware-based I²t wire protection and adjustable overcurrent detection for fast failure isolation. With the integrated I²t wire protection, the PROFET™ Wire Guard precisely calculates the stress of the wire, considering the measured current. The wire protection status feedback to the microcontroller allows accurate surveillance of the system behavior. Each device enables to optimize wire protection and load profile matching with six selectable I²t protection curves per device, matching to the corresponding RDS(ON). Furthermore, the feature reduces the time to market with specified and tested functionality on device level. Additional features include a sequential diagnosis, automatic low-power IDLE mode, capacitive load switching mode, and adjustable overcurrent protection for fast failure isolation towards dependable power supplies. PROFET™ Wire Guard is Infineon’s answer to electronic fuse requirements in modern power distribution of E/E architectures.

ISO 26262 - dependable electronics based on Functional Safety (FuSa)

With Infineon’s PROFET™ Wire Guard 12 V, designers are well prepared for today's and upcoming challenges of the automotive electronic/electrical (E/E) architectures. Those architectures demand components that meet the requirements for PRO-SIL™ ISO 26262-compliant and PRO-SIL™ ISO 26262-ready classifications used in fail-safe and in fail-operational power distribution systems.

To get access to the PRO-SIL™ ISO 26262 documentation, please register for myinfineon.com with your company e-mail address. Get in touch with your respective distribution or sales contact to request the elevation of your myInfineon account to partner status. This is required for access to our MyICP portal for downloads.

MyICP

ISO26262

PROFET™ Wire Guard design support

Infineon offers a range of design-in materials, which include application notes, evaluation boards, PCB design data, simulation models, and also online simulation tools. This material can be found on each product page in the Design Support chapter.

The Infineon Smart Power Switches and Gate Driver Tool Suite supports system architects and hardware designers from the starting point of an idea to the realization. This suite allows the user to select the right smart power switch or gate driver IC for a specific load using one of the “Finder & Selection” tools. Together with the different “Simulation & Modeling” tools, various application scenarios can be simulated for the respective products. The results can be documented in the report tool and verified with the “Configuration” tools, including the corresponding evaluation boards.

Facing a design challenge? The Infineon Developer Community is available 24/7 for you to connect and network with engineers all around the globe. Get help from Infineon support engineers and expert members to solve your design challenges anytime and from anywhere.

Smart Power Switches and Gate Driver Tool Suite

Developer Community

Meet Infineon’s PROFET™ Wire Guard. It’s integrated I²t wire protection and low-power IDLE mode form an automotive smart high-side switch for wire protection in modern power distribution. In combination with the adjustable overcurrent protection for fast failure isolation and sequential diagnosis, the PROFET™ Wire Guard forms Infineon's eFuse solution for dependable power. The ISO26262-compliant development enables usage in functional safety-related applications.

Decentralized, dependable automotive power distribution demands reliable solutions for wire harness protection, replacing melting fuses and reducing weight and complexity of wiring harnesses. PROFET™ Wire Guard integrates hardware-based I²t wire protection and adjustable overcurrent detection for fast failure isolation. With the integrated I²t wire protection, the PROFET™ Wire Guard precisely calculates the stress of the wire, considering the measured current. The wire protection status feedback to the microcontroller allows accurate surveillance of the system behavior. Each device enables to optimize wire protection and load profile matching with six selectable I²t protection curves per device, matching to the corresponding RDS(ON). Furthermore, the feature reduces the time to market with specified and tested functionality on device level. Additional features include a sequential diagnosis, automatic low-power IDLE mode, capacitive load switching mode, and adjustable overcurrent protection for fast failure isolation towards dependable power supplies. PROFET™ Wire Guard is Infineon’s answer to eFuse requirements in modern power distribution of E/E architectures.

Find information relating to the planned long-term availability of semiconductor products “Longevity” for Automotive Smart Power products.