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Power rail switch (PRS)

In new electric vehicles, two different power sources, such as batteries and DC-DC converters, supply the vehicle loads. Consequently, two concurrent power rails are used for power distribution from the sources to the loads. These two systems are not fully isolated. Power Rail Switches (PRS) are bidirectional devices that connect loads to an alternative power rail or source if one fails. PRS performs control and management of the concurrent power rails connected to the Power Distribution Unit (PDU) and Zonal Control Unit (ZCU) systems.

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.

Power device

STripFET low-voltage power MOSFETs deliver high-end performance across a wide range of applications. The new F8 series enables superior switching and conduction behavior in industrial and automotive systems.

Covering voltage categories from 30 V to 200 V, in small-footprint SMD and standard through-hole packages, and implementing 3rd generation trench technology, ST STripFET products are optimized to reduce electromagnetic interference (EMI) noise and boost overall power efficiency.