STEVAL-PDUBV1 Power Distribution ECU

Introduction

The STMicroelectronics STEVAL-PDUBV1 is an automotive power distribution ECU evaluation board designed to demonstrate intelligent, protected power delivery for vehicle electrical loads. Built around an SPC58NG84E7 microcontroller and STi²Fuse devices, it provides a practical platform for developing modern electronic power-distribution systems.

Part Description

The STEVAL-PDUBV1 implements two independent 12 V power rails, each supporting 13 protected output channels. This arrangement enables controlled distribution of electrical power to multiple automotive loads while helping isolate and protect individual circuits.

At the center of the design is the SPC58NG84E7 automotive microcontroller, which can manage power-channel control and monitoring functions. STi²Fuse protected devices provide the channel-level protection needed for intelligent power-distribution architectures. The board is intended as an evaluation and development platform for engineers exploring centralized or zonal automotive electronic control units.

Key characteristics include:

• Two independent 12 V power rails
• 13 protected output channels per rail
• 26 total protected output channels
• SPC58NG84E7 automotive MCU
• STi²Fuse intelligent protection devices
• Automotive power-distribution ECU evaluation platform
• Support for intelligent management of vehicle electrical loads

Applications

Potential applications for the STEVAL-PDUBV1 include:

• Automotive power distribution units
• Body control module development
• Centralized vehicle electrical architectures
• Zonal control units
• Protected low-voltage load switching
• Lighting power distribution
• Door, seat, window, and mirror power control
• HVAC actuator and blower distribution systems
• Vehicle accessory power management
• Electric and hybrid vehicle auxiliary power systems

Industries

Industries that may use this evaluation platform include:

• Automotive manufacturing
• Electric vehicle development
• Commercial vehicle engineering
• Heavy-duty truck and bus systems
• Agricultural vehicle electronics
• Construction and off-highway equipment
• Automotive electronics design
• Tier 1 automotive suppliers
• Vehicle test and validation laboratories

Usage Ideas

1. Zonal Body Electronics Demonstrator
   Create a prototype zonal ECU that distributes protected 12 V power to lighting, door modules, and interior accessories.

2. Smart Load Management Test Bench
   Use the protected channels to evaluate how a controller can prioritize, switch, and isolate different vehicle loads.

3. Auxiliary EV Power Distribution Module
   Develop a concept for managing low-voltage auxiliary loads in an electric vehicle, such as pumps, fans, lighting, and cabin electronics.

Conclusion

The STEVAL-PDUBV1 provides a capable starting point for evaluating intelligent automotive power-distribution designs. With two 12 V rails, 26 protected output channels, an automotive-grade SPC58 microcontroller, and STi²Fuse protection devices, it supports development work for modern vehicle electrical architectures that require controlled, reliable distribution of power to multiple loads.