ADUM4221 isolation between high side output and low side output

Question

Hi 
 
 UCC21520 have isolation voltage(VDC) between high side output and low side output. 
 Can we know ADUM4221 isolation spec between high side output and low side output? 
 (Is this same as working voltage in input(primary) to outputs(secondary)) 
 ADUM4223 have peak spec between outputs. 
 
 Best regards

RSchnell · Accepted Answer

Hello, 
 The isolation between the highside and lowside is not a safety isolation barrier, and is not covered by the isolation standards. It is suggested to keep creepage distances the same as would be required in a reinforced isolation situation, but since this is a functional isolation barrier, it is not specified. The creepage distance in this case is 2.34 mm. If we use the comparative tracking index, this results in a value of 1,404 V, but this assumes no outside pollution. Safety standards will reduce this number, but again, since this is a functional isolation barrier, we can't give an exact number.

RSchnell

Electronic Design Services - PartnerZone

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ADUM4221 isolation between high side output and low side output

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