6 Start-Up Testing
Perform the following steps to test the start-up:
- Connect the driver through the 20-pin control header to your drive electronics and supply the driver with 15V.
- Send a low signal to pin number 19 (fault
reset pin). Return pin number 19 to a high condition.Note: If the driver is configured for auto-reset, skip this step.
- Check the gate voltage:Note: Dependent on SiC MOSFET with Qg = 1025 nC, Vth = 2.9V, and Ciss = 19.5 nF.
- For the Off-state, the nominal gate voltage must be −6V to −4V.
- For the On-state, it is 17V to 21V.
- Ensure the supply current of the driver is within specified limit when the inactive or active trigger signals are applied, and then at the desired switching frequency.
- The system is now ready for application testing under the load conditions.
- Check thermal conditions to verify that the system is operating within the specified temperature range.
- Do not apply high voltage to the SiC module without first applying power to the GNU Debugger (GDB).