ADuM6020 & ADuM6028 isoPower® DC-to-DC Converters Analog Devices Inc. ADuM6020 and ADuM6028 isoPower® DC-to-DC Converters are low-emission, isolated DC-to-DC Converters based on iCoupler® technology. Analog Devices ADuM5020 and ADuM5028 Converters provide regulated, isolated power that is below CISPR22 Class B limits at full load on a 2-layer Printed Circuit Board (PCB) with ferrites.