MOSFET is the core device for energy conversion and circuit control in new energy vehicles, deeply penetrating into various key subsystems of the vehicle, directly determining the vehicle's energy efficiency performance, endurance, and operational reliability.

Application of Three Electric Core System
Main drive inverter
As the core hub connecting the power battery and the drive motor, MOSFET converts DC power into three-phase AC power through PWM pulse width modulation technology, accurately controlling the motor speed and torque. SiC MOSFET is the mainstream choice for 800V high-voltage platforms, with a switching frequency exceeding 100kHz. The overall loss of the inverter can be reduced to less than 5%, reducing energy loss by nearly 40% compared to traditional silicon-based IGBT solutions. It can also reduce the volume of passive components by more than 40%, significantly improving system power density.
Battery Management System (BMS)
MOSFET is responsible for three core functions: on/off of charge and discharge circuits, active balancing of individual batteries, and fast protection against short circuits. It can cut off the charging/discharging circuit in milliseconds, avoiding overcharging and overdischarging of the battery; By utilizing low loss energy transfer to achieve peak shaving and valley filling in battery packs, the overall lifespan of the battery can be extended by over 20%; Faced with extreme short-circuit conditions, hundreds of amperes of current can be cut off within 10 microseconds to prevent the risk of thermal runaway.
On board charger (OBC) and DC-DC converter
SiC MOSFET supports LLC resonant topology for ultra efficient charging, with a peak efficiency of over 98% for 6.6kW OBC and a power density of 3.42kW/L; At the same time, in the DC-DC converter that converts high voltage to low voltage, the low switching loss improves the conversion efficiency and adapts to the stable power supply requirements of the vehicle's 12V/24V low-voltage system.

Application of Vehicle Body and Electronic Control System
Low voltage electronic control scenario: Silicon based MOSFETs are widely distributed in vehicle motor drive circuits such as windows, wipers, electric seats, and headlights, with a conventional usage of 35-62 per vehicle. After the upgrade of the 48V electrical architecture, the demand for low on resistance automotive MOSFETs has further doubled, and some devices integrated with the half bridge architecture can reduce the PCB footprint of the H-bridge solution by half.
ECU front-end power protection: The ideal diode solution with integrated MOSFET can achieve reliable protection against battery reverse connection, reverse current, load rejection and other working conditions. Compared with traditional discrete solutions, it reduces peripheral components by more than 50% and significantly reduces the volume of ECU power circuit.