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ADUM3221 voltage rating

Question asked by Jolle on Jan 24, 2012
Latest reply on Jan 25, 2012 by bkennedy



I am designing a full-bridge converter which has a maximum input voltage of 630V. My controller is placed on the seconday side, so I need an insulated gate driver to my primay side MOSFETs.

I have been looking at the ADUM 3221 and on the website it says "Insulation Rating (kVrms): 2.5KV rms" but the datasheet states that is has maximum working insulation voltage of down to 560V.

Can anyone tell me what the difference between these numbers are? And would it be possible to use it in my circuit?