The voltage applied between the gate and source of a MOSFET during operation is denoted ‘VGS’ and the highest possible value of VGS that can be applied without damage is VGSS. This is important as it simplifies design of the control circuit.
Another important parameter is the gate-threshold voltage (Vth). With the electrical noise present in renewable, automotive and industrial applications, a high level of Vth can protect against spurious turn-ons of the MOSFETs.
In one of Toshiba’s SiC Snacks, the advantages of having high levels of VGSS and Vth are discussed and explained. Clearly, having greater tolerances within power system designs will lead to more reliable and robust solutions that are less susceptible to noise, high switching speeds and temperature variations.
You can access the SiC Snack flyer on ‘Wide VGSS and high Vth ratings’ below:
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