ADUM3190WSRQZ-RL7

Overview

The ADUM3190WSRQZ-RL7 is a high stability isolated error amplifier utilizing iCoupler technology. It features a 400 kHz bandwidth, 2.5 kVrms isolation voltage, and operates within a supply range of 3 V to 20 V on both sides. The device provides a 1.225 V reference with ±1% accuracy over the full temperature range of −40°C to +125°C. Packaged in a 16-lead QSOP, it supports automotive applications via AEC-Q100 qualification.

Feature Summary

• Provides stable isolated feedback for power supplies without lifetime drift associated with optocouplers.
• Integrates a wideband operational amplifier compatible with Type II or Type III compensation networks.
• Includes a precision 1.225 V internal reference for accurate output setpoint comparison.
• Offers dual outputs (EAOUT and EAOUT2) to drive various PWM controller input requirements.

Applications

• Linear power supplies
• Inverters
• Uninterruptible Power Supply (UPS)
• DOSA-compatible modules
• Automotive systems

Procurement Notes

Verify the specific suffix 'WS' indicates the 200 kHz bandwidth grade when reviewing datasheets, as other grades offer 400 kHz. Confirm the package type matches QSOP-16 requirements. Ensure ESD precautions are observed during handling due to sensitivity. Check regulatory approvals against target market standards such as UL 1577 or IEC/EN/CSA 62368-1.

Selection Notes

Select this component when primary side control is required to improve transient response and power density. Choose the WS grade specifically if a 200 kHz bandwidth meets system loop stability needs. Verify that the 2.5 kVrms isolation rating satisfies safety clearance and creepage distances for the application voltage. Ensure the operating temperature range aligns with the −40°C to +125°C specification.

Part Context

This part belongs to the ADuM3190 family of isolated error amplifiers from Analog Devices. It replaces traditional optocoupler and shunt regulator solutions by offering superior stability over time and temperature. The family includes variants with different bandwidths and accuracy grades, all sharing the same core iCoupler architecture and 16-lead QSOP packaging.

Replacement Considerations

Direct substitutes include other ADUM3190 grades such as ADUM3190WTRQZ-RL7 for 400 kHz bandwidth or ADUM3190BRQZ-RL7 for commercial temperature ranges. Verify pin compatibility and insulation ratings before substitution.