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The Role of Power Electronics in Future Automotive Systems
Technical Paper
98C009
Sector:
Language:
English
Abstract
As features in vehicles and their associated loading on the
vehicle's power supply increase, the existing 14V power supply
system is being pushed to its limits. At some point it will be
necessary to provide a complementary higher supply voltage for
higher power loads to ensure reliable operation. Industry efforts
have been underway to define the next step(s) toward a common
architecture. These efforts are currently focused on a dual voltage
14V/42V system with specified voltage limits. A change in the
vehicle's power supply voltage and over-voltage specifications
have a direct impact on semiconductors. Cost, reliability,
available process technology, and packaging are among the areas
that are affected. Reducing or eliminating the load dump transient
can provide cost reduction, especially for power switching devices.
Smart semiconductor switches with integrated diagnostic and
protection features provide the potential to replace fuses in the
new architecture.
This paper will provide an analysis of where the power
electronics is going in future vehicles. A roadmap of power
electronic devices (smart power ICs and power FETs) will be
included in the analysis