With rising power demand and increasingly strict efficiency targets, new energy‑management concepts must minimize both power losses in operation and standby current in parking mode.
ST’s latest smart power distribution architectures, combining STi²Fuse smart switches with Stellar 32‑bit automotive MCUs, enable safe and flexible power networks that reduce wire‑harness weight, length, and cost, while improving electric‑vehicle performance and driving range.
48V to 12V DC/DC converter
Power distribution unit (PDU)
Power rail switch (PRS)
Zonal control unit (ZCU)
Products and solutions
STi²Fuse, smart switches for wire harness protection
STi²Fuse is a new family of intelligent fuses designed to replace standard melting fuses in automotive power distribution systems.
These devices enable savings on components and production costs while extending EV range and reducing the vehicle's carbon footprint. Their monitoring, control, and digital interface capabilities help automotive systems comply with ISO 26262 and related Safety Integrity Levels (SIL).
Stellar 32-bit automotive MCUs
The Stellar platform consists of multiple series of automotive microcontrollers built around a versatile Arm®-based architecture. The Stellar P and Stellar G series are designed to support real-time virtualization of multi-ASIL ECUs while the Stellar E series addresses the needs for electrification.
All series boast an extensive array of I/Os and peripherals, making them suitable for modern car ECU solutions. The Stellar P & G product lines include xMemory, build on ST PCM technology, providing over twice the memory density compared to other eNVM technologies. Stellar with xMemory offers more headroom for current and future application needs.