GENERAL DESCRIPTION

The ADuM6221A is a dual-channel digital isolators with an isoPower

®, integrated, isolated DC-to-DC converter. Based on the Analog

Devices, Inc., iCoupler® technology, the DC-to-DC converter provides

regulated, isolated power that meets CISPR 32/EN 55032

Class B limits at full load on a 2-layer printed circuit board (PCB)

with ferrites. Popular voltage combinations and the associated

output current levels are listed in Table 1.

The ADuM6221A eliminates the need for a separate, isolated

DC-to-DC converter in 500 mW, isolated designs. The iCoupler chip

scale transformer technology is used for isolated logic signals and

for the magnetic components of the DC-to-DC converter. The result

is a small form factor and total isolation solution.

The ADuM6221A isolators provide two independent isolation channels

(for more details, see the Pin Configurations and Function

Descriptions section).

FEATURES

► isoPower integrated, isolated DC-to-DC converter

► 100 mA output supply

► Meets CISPR 32/EN55032 Class B emission limits up to 5 Mbps

at full load on a 2-layer PCB

► Dual DC to 100 Mbps signal isolation channels

► 28-lead, fine pitch, SOIC with 8.3 mm minimum creepage

► High temperature operation: 125°C maximum

► High common-mode transient immunity: 100 kV/μs

► Safety and regulatory approvals (pending)

► UL recognition (pending)

► 5000 V rms for 1 minute per UL 1577

► CSA certification per IEC 62368-1 and IEC 61010-1 (pending)

► IEC 60747-17 certificate of conformity (pending)

► VIORM = 596 V peak

► CQC certification per GB4943.1 (pending)

APPLICATIONS

► RS-232 transceivers

► Power supply start-up bias and gate drives

► Isolated sensor interfaces

► Automotive on-board charger (OBC) and DC-to-DC

► Industrial programmable logic controllers (PLCs)