iCoupler

ADuM347x Family: PWM Controller and Transformer Drivers with Quad-Channel Isolators


The ADuM347x Family are quad-channel, digital isolators with an integrated PWM controller and transformer driver for an isolated dc-to-dc converter. Based on the Analog Devices, Inc., iCoupler® technology, the dc-to-dc converter provides up to 2 W of regulated, isolated power at 3.3 V to 24 V from a 5.0 V input supply or from a 3.3 V supply. This eliminates the need for a separate, isolated dc-to-dc converter in 2 W isolated designs. The iCoupler chip-scale transformer technology is used to isolate the logic signals, and the integrated transformer driver with isolated secondary side control provides higher efficiency for the isolated dc-to-dc converter. The result is a small form factor, total isolation solution.

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ADuM347x Family
Additional Family Features
  • 70% efficiency at guaranteed load of 400 mA at 5.0V output
  • Quad dc-to-25 Mbps (NRZ) signal isolation channels
  • 20-lead SSOP package
  • High temperature operation: 105°C
  • High common-mode transient immunity: >25kV/µs
  • Soft start function at power-up
  • 2500 V rms isolation
Visit Product Pages to Request Samples
  • ADuM3470:   4/0 Channel Configuration

  • ADuM3471:   3/1 Channel Configuration

  • ADuM3472:  2/2 Channel Configuration

  • ADuM3473:   1/3 Channel Configuration

  • ADuM3474:   0/4 Channel Configuration

Evaluate the ADuM347x Family


The EVAL-ADuM3471EBZ demonstrates two separate applications for the ADuM347x family of quad-channel digital isolators with integrated transformer drivers. It has two independent power supply circuits: a double supply and a single supply. The switching frequency can be set from 200 kHz to 1000 kHz. The board supports a variety of I/O configurations and multiple transformer options. It is equipped with two ADuM3471 isolators.

To learn more about iCoupler technology and products, please visit www.analog.com/icoupler
Visit the ADuM347x evaluation
board page to order.


ADuM347x Evaluation Board
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