Hi Akshat,
SSD uses a smaller, programmable constant sink current to switch off the IGBT/SiC. The turn-off time is increased, turn-off speed is reduced and the gate is slowly discharged. This limits the di/dt and dv/dt, reducing voltage spikes and protecting the device.
Unlike SSD, the 2LTO first reduces gate drive to an intermediate programable voltage level (for a programmable duration) before fully turning it off. This reduces the peak voltage overshoot across the power device.
The segmented drive feature allows to wave shape the turn-off current and modulate the gate impedance during turn-off, for the purposes of mitigating potentially high VCE overshoot. Segmented drive is exclusively a non-fault, non-latching mode of operation during turn-off.
More details about all these features can be found in the GD3162 datasheet.
BRs, Tomas
