Considerations for a Digital Gate Unit in high power applications

Gate units of todaypsilas converters are in most cases voltage sources charging the input capacitance with a fixed gate resistor. In some publications, fixed current sources are implemented to support the charging process with a supplementary gate current. These solutions are implemented in an analog way and are designed and respectively optimized for fixed parameters and devices. During operation, there is no adaption process to adjust the switching transients to their actual optimum. The possibilities to implement new features or to adapt the units for a different device are related with time and effort.