Reliable solutions are necessary for power distribution designs that are modern, decentralized, and zonal. Infineon Technologies offers engineers cutting-edge wire safety for contemporary power distribution with PROFET Wire Guard.
The product family’s integrated and exact I²t wire protection curve, which may be chosen from six implemented curves based on the application requirements, allows it to replicate the stress characteristics of the wires much more accurately than traditional fuses.
In conjunction with other features, wire harness optimization is made possible by the integrated I²t wire protection accuracy, which replaces mechanical relays and fuses.
The Five PROFET Wire Guard Devices Come In:
- The proven TSDSO-14 and TSDSO-24 packages. They offer full pin-to-pin compatibility within the family and high compatibility with PROFET +2 12V devices and are targeting currents of up to 27 A.
- To expand the current capabilities up to 36A, the product line-up will be further extended with an additional device coming in Q4 2025.
- The devices have a capacitive load switching (CLS) mode implemented to charge capacitive loads.
- An adjustable overcurrent detection threshold supports fast fault isolation from the power supply.
- The integrated automatic idle mode reduces current consumption during parking to typically 50 µA, while the output stage remains fully switched on.
Built-in sequential diagnosis provides accurate application data across five addresses on a single pin, enabling application integrity testing for functional safety requirements and further wire harness optimization during facelifts based on the analysis of the wire protection status during vehicle operation.
The devices have been developed and are released as ISO 26262:2018 Safety Element out of context for safety requirements up to ASIL D.
To support the design-in process, the product family is integrated into the Infineon Automotive Power Explorer, which is available in the Infineon Developer Center.
This simulation tool supports, for example, the evaluation of the system protection capability of PROFET Wire Guard devices with a given wire and load profile. It also calculates the correct resistance values for the adjustable overcurrent detection threshold as well as the selection of the integrated I²t wire protection curves.
The tool is also capable to calculate parameters like kILIS accuracy or power dissipation for the whole product family.
Availability
The PROFET Wire Guard 12V family is available now.
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