I am doing a high voltage driver design and I have come across several designs some of which are implemented in HV-SOI and some in HV-CMOS. Could someone please tell me what is the difference between both and when each is used. Thanks in advance.
HV-CMOS usually needs larger-sized transistors than HV-SOI, and - depending on the HV value - sometimes additional guard rings, which need a lot of area.
So HV-SOI designs need less area, produce smaller parasitic capacitances, hence can be used up to higher frequencies.
HV-CMOS usually needs larger-sized transistors than HV-SOI, and - depending on the HV value - sometimes additional guard rings, which need a lot of area.
So HV-SOI designs need less area, produce smaller parasitic capacitances, hence can be used up to higher frequencies.