ADUM6421A Datasheet

• isoPower integrated, isolated dc-to-dc converter
• 100 mA output supply
• AEC-Q100 qualified for automotive applications
  • ADuM6421AW
• Meets CISPR 32/EN55032 Class B emission limits up to 5 Mbps at a full load on a 2-layer PCB
• Quad 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 5000 V rms for 1 minute per UL 1577
  • CSA certification per IEC 62368-1, IEC 61010-1, and IEC 60601-1
  • VDE V 0884-11 certificate of conformity (pending)
    • V_IORM = 566 V peak
  • CQC certification per GB4943.1-2011 (pending)

• 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)

The ADuM6421A are quad-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 a 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 in the data sheet.

The ADuM6421A eliminate 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, total isolation solution.

The ADuM6421A isolators provide four independent isolation channels. See the Pin Configurations and Function Descriptions in the data sheet for additional information.