Low Emission, 5 kV Isolated DC-to-DC Converters

The ADuM6020/ADuM60281 are isoPower®, integrated, isolated dc-to-dc converters. Based on the Analog Devices, Inc., iCoupler® technology, these dc-to-dc 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. Common voltage combinations and the associated current output levels are shown in Table 1 through Table 4.

The ADuM6020/ADuM6028 eliminate the need to design and build isolated dc-to-dc converters in applications up to 500 mW. The iCoupler chip scale transformer technology is used for the magnetic components of the dc-to-dc converter. The result is a small form factor, isolated solution.

The ADuM6020/ADuM6028 isolated dc-to-dc converters provide two different package variants: the ADuM6020 in a wide-body, 16-lead SOICIC package, and the ADuM6028 in the space-saving, 8-lead, wide-body SOICIC package. For 5 V input operations, use the ADuM6020-5BRIZ and the ADuM6028-5BRIZ. For 3.3 V input to 3.3 V output operations, use the ADuM6020-3BRIZ and the ADuM6028-3BRIZ. See the Pin Configuration and Function Descriptions section and the Ordering Guide for more information.

Applications

* RS-485/RS-422/CAN transceiver power

* Power supply start-up bias and gate drives

* Isolated sensor interfaces

* Automotive on-board charger (OBC) and dc to dc

* Industrial PLCs

1 Protected by U.S. Patents 5,952,849; 6,873,065; 6,903,578; and 7,075,329. Other patents are pending.

* isoPower integrated, isolated dc-to-dc converter

* 100 mA output current for ADuM6020

* 60 mA output current for ADuM6028

* AEC-Q100 qualified for automotive applications

* Meets CISPR22 Class B emissions limits at full load on a 2‑layer PCB

* 16-lead SOICIC package with 8.3 mm minimum creepage

* 8-lead SOICIC package with 8.3 mm minimum creepage

* High temperature operation: 125°C maximum