Automotive power distribution system
Optimized E/E architecture with power distribution, decentralization, and electrification
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Automotive power distribution is the controlled transport of energy via the power distribution system from sources (e.g. battery, HV-LV DC-DC) to all kinds of loads in the vehicle. The power distribution system is therefore an essential part of the vehicle E/E architecture.
As a consequence of the increasing number of comfort functions, advanced driver assistance systems, and automated driving, the complexity of the E/E architecture and especially the power distribution module has been continuously increasing.
![PDS_3main](/export/sites/default/_images/application/automotive/PDS_3main.png_1685772043.png)
The automotive power distribution system is built on three main elements - the primary power distribution, the secondary power distribution and the electronic control units (ECUs).
The primary power distribution is close to the source, often called the pre-fuse box. The secondary power distribution as of today, is the classical relay & fuse box which can be one central box or several distributed boxes.
![Relay](/export/sites/default/_images/application/automotive/Replacing_Fuses_Relay.png_1685772043.png)
Already a decade ago, engineers started to remove relays and fuses from the secondary power distribution. The most common approach has been to move reliability-critical functions to an electronic control unit (ECU) such as the automotive body control module (BCM) where the clamp 30 (key-off) release and clamp 15 (key-on) functions are located. Replacing relays and fuses with semiconductors in this way increases the power distribution system reliability thanks to additional diagnostics and enhanced protection features.
![The Power Distribution System challenges](/export/sites/default/_images/application/automotive/Designer_Challenges.png_1927636755.png)
Today, designers are challenged to:
- harmonize the power distribution architecture with the in-vehicle network (IVN) architecture which is transforming to a zonal architecture with central computing
- introduce fail operational concepts for dependable power supply and distribution by the use of safety elements, mainly in the primary power distribution
- reduce wire harness complexity by decentralization and electrification of the secondary power distribution and the introduction of zone controllers
![Introducing Infineon’s Dual Gate MOSFET for power distribution applications](/export/sites/default/_images/product/power/eLearning/Introducing-Infineons-Dual-Gate-MOSFET-for-power-distribution-applications.png_1779873395.png)
- Infineon’s Dual Gate MOSFET (IAUTN08S5N012L) is an 80 V product with an RDS of 1.15 milliohms, making it an ideal choice for use in disconnect switches
- Learn more about this product and its use in power distribution applications in this training
![](/export/sites/default/_images/product/trainings/Powering-up-with-Infineons-smart-high-side-switches.jpg_1757708891.jpg)
- Recognize the portfolios of PROFET™ +2 12V and Power PROFET™ and identify the advantages of each of these product families
- Distinguish the differentiating features of the newly released devices of the PROFET™ +2 12V and Power PROFET™ + 12V families
![Electrical power distribution center](/export/sites/default/_images/product/ATVElectricalPowerDistribution.JPG_1782643958.jpg)
In this training, you will:
- Indicate what an electrical power distribution center is and describe what solutions Infineon offers for
- Explain why relays and fuses are being replaced with semiconductors and identify the devices that Infineon provides for replacing
![](/export/sites/default/media/eLearning/Automotive/ee-automotive-architecture-evolution/story_content/thumbnail.jpg_1778949874.jpg)
Description:
- Explain how the major automotive trends are shaping the evolution of electrical and electronic or E/E architectures in cars
- Identify the trending E/E architecture concepts and their impact on networking technologies and recognize the solutions that Infineon provides to support current and future E/E architectures
![](/export/sites/default/_images/application/automotive/trusted-body-control-module.JPG_1779873395.jpg)
In this training, you will:
- Understand what a body control module is and what solutions Infineon offers for standard and high-end body control modules
- Discover why relays and fuses are being replaced with smart switches and identify Infineon's alternative devices