Insulated Gate Bipolar Transistors (IGBTs), which are manufactured using **monocrystalline silicon (Si)** as the substrate, are currently the most mature and widely used power devices in the industrial and power electronics fields.
It combines the high input impedance and easy drive of MOSFETs with the low on-state voltage drop and high current capability of BJT bipolar transistors, making it a voltage-controlled power switching device.
Features:
Mature technology, low cost, and high reliability
Wide voltage coverage: 600V~6500V
High current level, suitable for high-power scenarios
Simple drive, moderate loss
Typical Applications:
1. New energy & transportation
New energy vehicles: motor controller, OBC, DC-DC
High-speed rail/rail transit: traction converter
Electric buses, forklifts, and construction machinery
2. New energy power generation
PV inverter
Wind power converter
Power Conversion System (PCS) for energy storage
3. Industrial equipment
Frequency converter, servo driver
Electric welding machine, induction heating equipment
UPS, switching power supply, electroplating/electrolysis power supply
4. Home appliances and consumer electricity
Variable frequency air conditioner, variable frequency refrigerator
Induction cooker, microwave oven
5. Power grid and electrical equipment
Flexible DC transmission (VSC-HVDC)
Reactive power compensation device (SVG, STATCOM)
Limitation:
The switching speed is inferior to that of SiC MOSFET
Limited high-temperature performance (typically up to 175℃ junction temperature)
The loss is relatively large at high frequencies