The MOSFET solution for permanent magnet motors is designed for the full range of scenarios including permanent magnet synchronous motors (PMSM) and brushless DC motors (BLDC), focusing on three core requirements: high-precision vector control, ultra quiet operation, and wide speed regulation range. It covers the entire chain of three-phase inverter bridge drive, sensorless FOC control, and energy feedback, and is suitable for high-end applications such as industrial servo, new energy vehicles, and robots.

Core three-phase inverter bridge power segment device scheme
1. Small power precision servo scenario (100W-1kW)
The core requirement is low ripple, high-precision current loop response, suitable for scenarios such as 3C electronic manufacturing and precision instruments:
Mainstream preferred solution: VBGQF1405, 40V/60A, DFN8 (3x3) package, with Rds (on) of only 4.2m Ω at 10V under SGT process, supporting 20kHz high-frequency PWM, current loop bandwidth exceeding 1kHz, and speed control accuracy of ± 0.1rpm
High integration solution: Infineon 6EDL7141 intelligent gate driven 60V MOSFET power level combination, built-in overcurrent/over temperature protection, BOM volume reduced by 40% compared to vertical solution, suitable for compact installation space
High voltage adaptation solution: IRFP460500V/20A, TO-247 package, 270m Ω low on resistance, suitable for 180V high voltage low-power permanent magnet motor, stable temperature rise for long-term operation under 5A rated current

2. Medium power industrial traction scenarios (1kW-10kW)
The core requirements are high torque output, resistance to overload impact, and adaptability to heavy-duty scenarios such as industrial robots and electric forklifts

Flagship solution: Infineon TLE4976-1K, 40V/209A, with Rds (on) as low as 1.25m Ω under SGT technology, extremely low parasitic inductance in TOLL packaging, device temperature rise controlled within 30K under locked rotor conditions, and overall efficiency exceeding 98%
Mainstream industrial solution: VBM1606, 60V/120A, TO-220 package, Rds (on) of only 4m Ω under SGT technology, gate charge Qg of only 47nC, support 16kHz SVPWM modulation, suitable for conventional industrial permanent magnet synchronous motors under 5kW
Wide bandgap upgrade solution: 1200V SiC MOSFET three-phase bridge module, reducing switch losses by 60% compared to silicon-based devices, supporting 50kHz high-frequency operation, reducing motor torque ripple by 80%, suitable for high-speed permanent magnet spindle motors

3. High power new energy vehicle scenarios (above 10kW)
The core requirements are vehicle grade reliability, high power density, and adaptability to the main drive motor and onboard electric drive system
Vehicle grade solution: STMicroelectronics SLLIMM 2nd series IPM, built-in 600V vehicle grade MOSFET three-phase inverter bridge, current coverage of 8-35A, top cooling direct copper package, suitable for permanent magnet main drive for vehicles under 30kW, meeting AEC-Q100 Grade 0 reliability requirements
High voltage SiC solution: 1200V SiC MOSFET power module, Rds (on) as low as 20m Ω, supports 800V high-voltage bus, increases vehicle range by more than 10%, suitable for 800V high-voltage platform new energy vehicles