Next-Gen intelligent automotive power distribution

Smart wire protection with ultra-low power consumption in parking mode

As software-defined vehicles transition from centralized to localized zone control units (ZCUs), automotive power distribution must evolve. ST’s smart power ecosystem delivers a highly flexible hardware core designed to protect complex wiring, maximize battery life, and give developers the complete freedom to scale their zone architectures with any processor.

Revolutionizing vehicle zone modules

Zone-level engineering advantages

Protection and safety

  • Robust protection for safeguarding traces and harnesses
  • Enhanced safety with Fast-off and Limp-home modes

Performance and control

  • Park mode with support for ultra-low current standby
  • Smart Inrush ensures safe charging via CCM mode
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System health and stability

  • Diagnostics enables early detection of degradation
  • Powernet stability helps prevent network collapse
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High power, smart control with hybrid STi²Fuse solutions

ST’s dual-IC architecture pairs a high-side power driver with a common low-power coordinator, powered by our proprietary STi²Fuse predictive protection technology. Select the driver that matches your specific current and application requirements:

Choose your high-side power driver

Both high-side drivers work natively with the L99SP08 P-channel MOSFET-based power switch. This companion chip enables low-power operation with very low standby current and helps maintain system operation in standby mode.

The solution architecture: system synergy in 3 steps

This is how our dual-IC system architecture dynamically coordinates power delivery, monitoring, and diagnostics for robust, efficient operation

 

Step 1: Power controller

Step 2: Intelligent supervision

Step 3: System scale

Component

Core function

Local protection:

  • Autonomously isolates overcurrent events
  • Manages embedded hardware safety profiles

Energy supervision:

  • Aggregates telemetry data for voltage and temperature
  • Controls the transition to parking mode

Network control:

  • Transmits high-fidelity data for predictive maintenance
  • Supports CAN, LIN, or Ethernet communication

Operational performance

Hardware reactivity:

  • Manages rapid fault event sequences
  • Offloads critical safety tasks from the main processor

Standby efficiency:

  • Manages power-down sequences smoothly
  • Keeps the system in ultra-low-power mode

Real-Time connectivity:

  • Routes real-time status updates across the vehicle network

On-demand webinar

Unlocking new designs in mobility with STi2Fuse smart switches