The global automotive industry is accelerating its transition toward electrification and intelligence. Continued growth in new energy vehicle sales is not only transforming traditional powertrain systems but also increasing both the number and value of automotive semiconductor components.

Electric Vehicles Drive Demand for Power Devices

Compared with conventional fuel-powered vehicles, new energy vehicles include additional electronic modules such as traction batteries, motor controllers, onboard chargers, high-voltage DC-DC converters, battery management systems, and thermal management systems.

All of these systems require large numbers of power semiconductor devices for energy conversion and control.

MOSFETs can be used in body electronics, auxiliary motors, power management, and low-voltage control systems. IGBTs and SiC devices can be applied in traction inverters, charging equipment, and high-voltage power conversion systems. Diodes and SBDs are widely used in rectification, freewheeling, and protection circuits.

As new energy vehicles become increasingly electronic, power devices are playing an even more important role in the overall vehicle system.

High-Voltage Platforms Drive Technology Upgrades

To improve charging speed and overall vehicle efficiency, more new energy vehicles are adopting higher-voltage electrical platforms.

At the same output power, increasing system voltage can reduce operating current, thereby lowering wiring losses and system heat generation. However, high-voltage platforms also place greater demands on the voltage capability, insulation performance, switching losses, and reliability of power devices.

With advantages such as high-voltage resistance, low switching losses, and strong high-temperature performance, SiC devices are attracting growing attention in high-voltage traction inverters, onboard chargers, and high-power DC-DC systems.

At the same time, conventional silicon-based MOSFETs and IGBTs will continue to play an important role in many automotive electronic applications because of their mature manufacturing processes and cost advantages.

Automotive-Grade Reliability Becomes a Key Requirement

Automotive electronic products must often operate for long periods under high and low temperatures, vibration, humidity, and complex electromagnetic conditions. Their requirements for device reliability and consistency are therefore significantly higher than those of ordinary consumer electronics.

Whether power devices can pass rigorous reliability validation and maintain stable performance in mass production will directly affect their adoption in the automotive market.

In the future, the new energy vehicle market will continue to drive advances in power semiconductor technology. Device manufacturers must achieve the right balance among performance, quality, cost, and supply capability in order to capture the long-term opportunities created by automotive electrification.