My understanding is that Automotive Power Electronics are typically designed with levels of power electronic components ie 650V, 1200V, 1700V, mosfets etc... and if you have 1200V components you typically need headroom and dont operate the device at 1200V, usually a couple hundred volts lower. My question is why is that? what is the risk/failure mode of operating devices at 1100V continuous if they have 1200V rated components?
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