A good PCB layout for optimal thermal performance would be to have a solid ground plane on the bottom layer, and to use thermal vias to connect the thermal pad of the device to the ground plane. This helps to dissipate heat efficiently.
To ensure reliable operation at high temperatures, it's essential to follow the recommended operating conditions, ensure good thermal design, and consider derating the device's power handling capabilities. Additionally, consider using a heat sink or thermal interface material to improve heat dissipation.
The STPSC6H065BY-TR has built-in ESD protection, but it's still important to follow proper ESD handling procedures during assembly and testing. Use an ESD wrist strap or mat, and ensure that the device is handled in a static-safe environment.
To troubleshoot issues with the device's switching performance, check the gate drive circuitry, ensure proper PCB layout, and verify that the device is operated within its recommended specifications. Use an oscilloscope to measure the device's switching waveforms and identify any anomalies.
When paralleling multiple STPSC6H065BY-TR devices, ensure that each device has its own gate drive circuitry, and that the devices are properly synchronized to prevent shoot-through currents. Also, consider the total power handling capability and thermal management of the paralleled devices.