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Power Distribution

Tools and Software
HW Evaluation Tools
Key Products
The electrification and digitalization of vehicles means that power distribution can no longer rely on a block containing  a collection of fuses, relays and circuit-breakers with a multitude of wires.

Greater efficiency with VIPower™

The need for increased efficiency, diagnostics and smarter power distribution has led ST Intelligent Power Switches based on our proprietary VIPower™ technology. These, combined with an automotive grade 32-bit SPC58 MCU not only provide power and protection for sensitive components such as audio systems they also provide valuable diagnostic and maintenance information, combined with a level of security that protects the power distribution from unwanted interference. 

ST has a very wide offer of intelligent power switches (IPS) based on our proprietary VIPower™ technology that provide low ohmic losses and a set of protection and diagnostics features to ease the design of vehicle power distribution systems.


eDesignSuite is a comprehensive set of easy-to-use design-aid utilities ready to help you streamline the system development process with a wide range of ST products.

Thermal-electrical Simulators for Components

Power Management Design Center

Choose design tool:

AC Switches Simulator

Select ratings and application waveforms
Get junction temperature and blocking voltage graphs
Search and sort suitable devices

Rectifier Diodes Simulator

Select ratings and application waveforms
Estimate power losses
Search and sort suitable devices


Supports long mission profiles
Provides power loss and temperature graphs
Helps define heatsink thermal properties

Twister Sim

Help select the right ViPOWER Automotive power device
Supports load-compatibility, wiring harness optimization, fault condition impact and diagnostic analysis
Supports various PCB configurations

TVS Simulator

Specify system ratings and surge waveform
Search and sort suitable devices
Choose design tool:

Power Supply Design Tool

SMPS design, by topology, by type and by product
PFC design with analog and digitial control
Supports various PCB configurations
Choose type:
Solar Battery Charger

LED Lighting Design Tool

Handles AC-DC and DC-DC design in common topologies
Displays interactive and annotated schematic
Provides current/voltage graphs, Bode plots, efficiency curves and power-loss data
Choose type:

Digital Power Workbench

Provides a step-by-step optimized design of power section and control loop
Generates the STM32Cube embedded software package for custom applications and allows firmware project generation, compatible with multiple STM32 IDEs

Power Tree Designer

Specify input/output power for each node in the tree
Check for consistency
Design each individual node
Picture Solution
Automotive Power Distribution Solution
Automotive Power Distribution Solution