ADuM5028 used to generate negative voltage

Question

Hi, 
 I am designing an isolated power supply. The ADuM5028 seems like a good choice. Can this device be used for generating a floating negative voltage by tying the Viso to the common mode pint and suing the GNDiso as the rail voltage? If yes, kindly provide some information on how this can be accomplished.

amitmadan · Accepted Answer

Hi Dhruva, 
 Yes, this can be done as the output is completely floating, so it can be referenced to any potential. In your case, VISO = isolated ground or common ground, and GNDISO = -5V or -3.3V depending on the configuration of the part. 
 Regards, 
 Amit)

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ADuM5028 used to generate negative voltage

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