13 kW High Efficiency Motor Drive Inverter with top-side cooled U2 package

This reference design demonstrates the use of silicon carbide (SiC) MOSFETs to optimize the performance of a motor drive for auxiliary motors in electric vehicles, as well as Heating Ventilation and Air Conditioning (HVAC) and other similar applications. This design features the top-side cooled U2 package that significantly increase system level power density and efficiency, while improving thermal management and board layout flexibility. SiC’s higher thermal conductivity and lower losses at higher switching frequencies enables smaller system size and cooling requirements, faster compressors and lower noise vibration harshness.

The Design Accomplishes:

• Peak efficiencies of 99%, full load efficiency of 98.5%
• Wide input DC link voltage range
• Closed-loop sensorless field oriented control

Specifications:

• Input Voltage: 550 – 850 VDC
• Switching Frequency: 10 – 32 kHz
• Maximum RMS Output Voltage: 420 VL-L
• Output Power: 13 kW
• Short circuit protection
• Open loop mode for static testing
• Sensorless FOC for permanent magnet synchronous machine (PMSM)
• CAN interface to PC based user interface