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AD5755 AVCC Peak Current requirements for the DC-to-DC Converters

Question asked by dthomas on Jul 9, 2012
Latest reply on Jul 12, 2012 by dthomas

Hi,

I'm trying to use the AD5755 with a galvanically isolated signal and power interface. 

Do you have to design your Isolated DC-DC converter (+15/-15)V (I will use the +15V on the isolated side to for the input to the LDO for AVCC) to meet the 0.8A peak per channel for the DC-DC blocks (4 X (0.8A X 5V) = 16W!!)?  Why is there such a power overhead?  What configuration would require this much power?


Regards,


Davey Thomas

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