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  5. ADUM4472

Data Sheet Rev. A
JP Rev. 0
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Overview

Features and Benefits

  • For 2500 V rms isolation, please visit the ADuM3472 product page
  • Isolated PWM feedback with built in compensation
  • Primary side transformer driver for up to 2.5 W output power with 5 V input voltage
  • Regulated adjustable output: 3.3 V to 24 V
  • Up to 80% efficiency
  • Quad dc-to-25 Mbps (NRZ) signal isolation channels
  • 200 kHz to 1 MHz adjustable oscillator
  • Soft start function at power-up
  • Pulse-by-pulse overcurrent protection
  • Thermal shutdown
  • 5000 V rms isolation
  • High common-mode transient immunity: >25 kV/µs
  • 20-lead SOIC package with 8.3 mm creepage
  • High temperature operation: 105°C

Product Details

The ADuM4470 / ADuM4471 / ADuM4472 / ADuM4473 / ADuM4474 are quad-channel, digital isolations with a regulated DC/DC isolated power supply controller with an internal MOSFET driver. The DC/DC controller has an internal isolated PWM feedback from the secondary side based on the iCoupler® chip scale transformer technology and complete loop compensation. This eliminates the need to use an optocoupler for feedback and compensates the loop for stability.

The ADuM447x isolator provides a more stable output voltage and higher efficiency compared to unregulated isolated DC/DC power supplies. The fully integrated feedback and loop compensation in a wide-body SOIC package provide a smaller form factor and 8.3 mm creepage distance solution. The regulated feedback provides a relatively flat efficiency curve over the full output power range. The ADuM3070 enables a DC/DC converter with a 3.3 V to 24 V isolated output voltage range from either a 5.0 V or a 3.3 V input voltage, with an output power of up to 2.5 W.

The ADuM447x isolators provide four independent isolation channels in a variety of channel configurations and data rates. (The x in ADuM447x throughout this data sheet stands for the ADuM4470 / ADuM4471 / ADuM4472 / ADuM4473 / ADuM4474).

APPLICATIONS

  • Power supply startup bias and gate drives
  • Isolated sensor interfaces
  • Process controls
  • RS-232/RS-422/RS-485 transceivers

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Documentation & Resources

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    Design Resources

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    Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
    ADUM4472ARIZ Material Declaration Reliability Data 20-Lead SOIC (Increased Creepage)
    ADUM4472ARIZ-RL Material Declaration Reliability Data 20-Lead SOIC (Increased Creepage)
    ADUM4472CRIZ Material Declaration Reliability Data 20-Lead SOIC (Increased Creepage)
    ADUM4472CRIZ-RL Material Declaration Reliability Data 20-Lead SOIC (Increased Creepage)
    Wafer Fabrication Data

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    • ADUM4472ARIZ Production
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    • ADUM4472CRIZ Production
    • ADUM4472CRIZ-RL Production

    Support & Discussions

    ADuM4472 Discussions

    Value of Clearance and creepage
    iCoupler VDE document
    RE: ADuM4472 Primary side: 5V power and 3V3 digital, Secondary side: all 5V
    All ADuM4472 Discussions
    ADuM4472 Contact ADI Technical Support »
    ADuM4472 Ask your question »
    ADuM4472 Contact ADI Technical Support » ADuM4472 Ask your question »

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