Inside every internal combustion vehicle is the tried and true 12 V electrical system. Inside every electric or hybrid electric vehicle (EV, HEV) is something much different. EVs and HEVs harness the power of high voltage electrical systems to efficiently drive the main electric motor(s), rapidly charge the battery, and quickly heat the cabin on cold days. EVs and HEVs today use 400 V or 800 V, with even higher voltages on the horizon. These high voltages require much more attention to electrical safety and the partitioning systems into low voltage and high voltage domains. Advances in CMOS processes have opened the door to cutting edge, digital isolation. Although EVs and HEVs have been quick to adopt this new technology, adopting digital isolators brings new challenges.
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