I'm using 3 off ADuM3471s and 1 off ADuM3473 on a single PCB. When power is applied I see an output voltage overshoot of approx 50%, so that the 3 off 5V/5V converters reach 7.5V, and the 5V/12.5V converter 18V .
The peak is reached about 1.5ms after power is applied.
Is there anyway I can reduce this voltage overshoot to below the levels where things will get broken?
I would also like to check on the current drawn downstream of the converters. Can I apply dc power to the output stage and measure current drawn or will powering the output damage the ADum part?
Andy: Can you tell me what the load is on the different outputs? Would you be able to send a schematic to review? How about the waveforms of the output overshoot?