Isolated IGBT Gate Driver Evaluation Platform Reference Design for Three-Phase Inverter Systems

The TIDA-00195 reference design includes a 22kW power stage and TI's new reinforced isolated IGBT gate driver ISO5852S for motor control in a variety of applications. This design enables performance evaluation of the ISO5852S in a three-phase inverter integrating an IGBT module with a rated voltage of 1200V and a rated current range of 50A-200A.

Some of the important features and performances evaluated include short-circuit protection using DESAT detection, soft shutdown, effectiveness of active Miller clamping at different inverter dv/dt, and IGBT gate driver derived from adjustable speed electrical System-level ESD/EFT performance of electric drive systems (IEC61800-3). Piccolo Launch Pad LAUNCHXL-F28027 is used to generate the PWM signals required for inverter control.

characteristic

• ● Three-phase inverter system has:
  • ● IGBT module with rated voltage of 1200V and rated current range of 50A-200A. (Supports multiple vendors)
  • ● 7 reinforced isolated IGBT gate drivers – ISO5852s, operating voltage isolation of 1.5kVrms, minimum CMTI of 50 kV/μs
• ● Integrated protection functions against overcurrent and false opening, using:
  • ● DESAT test
  • ●Soft shutdown
  • ● Active Miller clamp
• ● Meet IEC61800-3 EMC immunity requirements:
  • ● +/-8kV ESD CD - per IEC 61000-4-2 standard
  • ● +/-4kV EFT - as per IEC 61000-4-4
• ● On-board half-bridge isolated power supply that generates +16V/-8V for gate drivers, capable of powering gate drivers from unipolar or bipolar supplies with external BJT/MOSFET buffers
• ● Configurable gate driver inputs for inverting/non-inverting operation
• ● You can choose to evaluate the system through the following methods:
  • ● Twisted pair cable between gate driver and IGBT
  • ● External capacitance between gate and emitter