ADUM3221WBRZ

Overview

The ADuM3221WBRZ is a dual-channel, current-isolated gate driver utilizing Analog Devices iCoupler technology. It provides independent high-side and low-side outputs with a peak output current of 4 A. The device operates within a supply voltage range of 3 V to 18 V and features a nominal undervoltage lockout (UVLO) of 7 V. Propagation delays are characterized by rise and fall times of 22 ns. It is qualified under AEC-Q100 standards for automotive applications and functions reliably across an operating temperature range of -40°C to +125°C.

Feature Summary

• Integrates two independent channel drivers based on iCoupler magnetic coupling technology for galvanic isolation.
• Delivers high peak drive current capability suitable for power switching applications.
• Includes undervoltage lockout protection to ensure stable operation during power transitions.

Applications

• Driving IGBTs in industrial motor control systems
• Power management circuits requiring isolated gate signals
• Automotive electronics compliant with AEC-Q100 standards

Procurement Notes

Verify the specific package variant against procurement requirements, as the base model typically corresponds to tube packaging while reel variants exist. Confirm that the required isolation voltage and thermal performance align with the target application's safety and operational constraints before finalizing the order.

Selection Notes

Select this component when high-speed, bidirectional signal transmission with robust isolation is required. The dual-channel architecture simplifies design for half-bridge configurations. Ensure the input logic levels are compatible with the controller interface and that the PCB layout supports the necessary isolation creepage distances defined by the SOIC-8 package.

Part Context

This part belongs to the ADuM322x series of isolated gate drivers from Analog Devices. It shares architectural similarities with other members of the family but differs in channel count and specific electrical characteristics. The series leverages silicon-based magnetic coupling to replace traditional transformer or optical isolation methods.

Replacement Considerations

The ADUM3221WBRZ-RL7 serves as a direct functional substitute with identical electrical specifications, differing only in the reel packaging format instead of the tube configuration. Other models in the ADuM322x family may offer different channel counts or pinouts and require careful schematic review.

FAQ

What technology enables the isolation in the ADUM3221WBRZ?

The device utilizes Analog Devices' proprietary iCoupler technology, which employs silicon-based magnetic coupling components integrated on-chip to provide galvanic isolation.

Is the ADUM3221WBRZ suitable for automotive applications?

Yes, the component is qualified according to the AEC-Q100 standard, making it suitable for use in automotive electronic systems.