The PECU300 from PHINIA Inc. is a multi-fuel engine control unit (ECU) designed as a single hardware platform covering hydrogen internal combustion, gasoline, and diesel engine applications for passenger cars and medium-duty commercial vehicles. Built around the Infineon AURIX TC39x microcontroller on a 6-layer FR4 PCB with dual-side SMT, it supports up to six cylinders with dedicated injector and spark drivers, integrated knock sensing, and a flexible 196-way connector.

How does the PECU300 support hydrogen ICE applications?

Beyond the six primary fuel injector drivers and six smart-coil spark drivers, the PECU300 provides six additional configurable injector channels — assignable as water injectors for knock mitigation, lubrication injectors for hydrogen operation, or SCR dosers for diesel aftertreatment. Up to four hydrogen tank solenoid outputs are available for multi-tank gaseous fuel storage systems. The phase-boost power supply delivers up to three 65V switched rails (two nominal) for the high-voltage multi-injection profiles required by direct-injection hydrogen combustion.

What functional safety and cybersecurity provisions are built in?

The PECU300 is developed to ISO 26262 ASIL C for functional safety and complies with ISO 21434 and UN R155 for cybersecurity — meeting the regulatory requirements for connected vehicle architectures. The IP6K9K-rated die-cast aluminium housing withstands high-pressure steam jet washing and direct engine-mount installation with anti-vibration mounting. Operating range spans -40°C to +105°C ambient, making it suitable for under-hood deployment across all climate zones.