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