Hello, I have been wondering about different snubber technics. To this point … What is the difference between RC device snubber and RCD device snubber?
RC is simple and effective. RCD only provides Vds overshoot controlling and spike attenuation but provides less control of dv/dt. The topology is more like a bridge-connected RC bus snubber using diode. For hard switching RCD is more efficient because the snubber C is not charged/discharged every switching cycle. For ZVS soft switching RC is more efficient because during turn-off the C snubber will shift current out of device channel much faster due to C snubber charge/discharge current.