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When selecting an isolated gate driver, consider these questions. At the present time, ROHM gate drivers are available in 2500 VRMS or 3750 VRMS ratings. What this means is that devices have been tested in accordance with UL 1577 at either 2500 VRMS or 3750 VRMS for 60 seconds without failure. The insulation system is classified as basic insulation and devices are UL recognized components File #E356010. As a general guideline (for clean environments Pollution Degree 1 and 2) from DIN EN 60747-5-2, if the DC Link (DC Bus) voltage is expected to be 566 VDC or less, use the 2500 VRMS rated parts. For DC Link voltage greater than 566 V but less than 891 V, use 3750 VRMS rated parts. Currently, ROHM cannot support applications with a DC Link of more than 891 VDC.
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