ADUM6221A

RECOMMENDED FOR NEW DESIGNS

Dual-Channel Isolator with Integrated DC-to-DC Converter

Data Sheet (Rev. B) Product Selection Table
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Overview

  • 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
    • UL 1577
      • VISO = 5000 V rms for 1 minute
    • IEC/EN/CSA 62368-1
    • IEC/CSA 60601-1
    • IEC/CSA 61010-1
    • CQC GB 4943.1
    • DIN EN IEC 60747-17 (VDE 0884-17) (pending)
      • VIORM = 596 V peak

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).

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)
ADUM6221A
Dual-Channel Isolator with Integrated DC-to-DC Converter
ADuM6221A Functional Block Diagram ADuM6221A Pin Configuration
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Documentation

Data Sheet 1

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Evaluation Kits

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EVAL-ADUM6421A

ADuM6421A Evaluation Board

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Features and Benefits

  • isoPower integrated, isolated dc-to-dc converter
  • Meets CISPR 32/EN 55032, Class B emission limits
  • On-board 6 V to 9 V LDO power supply that provides 5 V to the VDDP pin
  • 5 V input operation and selectable 3.3 V or 5 V isolated dc-to-dc converter output
  • Screw terminal connectors for the following
    • LDO power supply
    • 5 V direct power supply
    • Off board PDIS control
    • Isolated output supply

Product Details

The ADuM6420A/ADuM6421A/ADuM6422A/ADuM6423A/ADuM6424A devices integrate four iCoupler® on-off keying (OOK) digital isolation channels and iCoupler chip scale isoPower® transformer technology.

This iCoupler transformer technology enables a small form factor integrated, reinforced isolated signal and power solution, in applications requiring up to 500 mW of isolated power.

Available dc-to-dc converter supply configurations and maximum available power at the elevated ambient temperatures are specified in the ADuM6420A/ADuM6421A/ADuM6422A/ADuM6423A/ADuM6424A data sheet, respectively.

The ADuM6420A/ADuM6421A/ADuM6422A/ADuM6423A/ADuM6424A devices provide regulated, isolated power that meets CISPR 32/EN 55032, Class B limits at full load on a 2-layer printed circuit board (PCB) with ferrite beads. Radiated emissions test plots of the EVAL-ADUM6421ARNZ/EVAL-ADUM6421AURNZ are provided in Figure 4 and Figure 5 in the data sheet. All devices in the family include the same isolated dc-to-dc converter and are differentiated by directional digital channel configurations.

The EVAL-ADUM6421ARNZ includes the ADuM6421ABRNZ5 quad-channel digital isolator with integrated, isolated dc-to-dc converter. Alternatively, the EVAL-ADUM6421AURNZ leaves the isolator position unpopulated to support evaluation of the ADuM6420A, ADuM6421A, ADuM6422A, ADuM6423A, or ADuM6424A.

Full specifications for the ADuM6420A/ADuM6421A/ ADuM6422A/ADuM6423A/ADuM6424A are available in the ADuM6420A/ADuM6421A/ADuM6422A/ADuM6423A/ADuM6424A data sheet, which must be consulted in conjunction with the user guide when using the evaluation boards.
EVAL-ADUM6421A
ADuM6421A Evaluation Board
EVAL-ADUM6421ARNZ EVAL-ADUM6421AURNZ EVAL-ADUM6421AURNZ

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