ADUM4120-1ARIZ-RL

Isolators - Gate Drivers Overview

The ADUM4120-1ARIZ-RL is a single-channel isolated gate driver utilizing iCoupler magnetic coupling technology. It delivers a peak output current of 2.3 A with a 5000 Vrms isolation rating in a 6-pin wide SOIC package. The device operates with an input supply (VDD1) of 2.5 V to 6.5 V and an output supply (VDD2) of 4.5 V to 35 V. Key electrical parameters include a maximum propagation delay of 79 ns, a common-mode transient immunity of 150 kV/µs, and a junction temperature range up to 125°C. It features multiple UVLO options on the output side.

Isolators - Gate Drivers Feature Summary

• Provides reinforced galvanic isolation between input and output circuits using integrated transformer technology.
• Includes an input glitch filter to reduce noise susceptibility and prevent false triggering.
• Offers configurable under-voltage lockout thresholds on the output side for precise switching control.
• Features high common-mode transient immunity to ensure reliable operation in noisy environments.

Isolators - Gate Drivers Applications

• Industrial motor drives
• Inverter systems
• Power supply designs

Isolators - Gate Drivers Procurement Notes

Verify the specific suffix ARIZ-RL against the manufacturer's official datasheet to confirm pinout compatibility and packaging type. Ensure the selected variant matches the required UVLO threshold configuration for your application. Cross-reference the component marking with the official Analog Devices documentation to authenticate the source and avoid counterfeit parts.

Isolators - Gate Drivers Selection Notes

Select this component when high-speed isolation with precise timing is required for driving IGBTs or MOSFETs. The integrated glitch filter makes it suitable for noisy industrial environments. Consider the available UVLO options if strict turn-on voltage monitoring is necessary for the power stage.

Isolators - Gate Drivers Part Context

This part belongs to the ADuM4120 family of precision isolated gate drivers. It shares the core iCoupler architecture with variants like the ADUM4120 and ADUM4122 but includes specific output UVLO configurations. The -1 suffix indicates a particular UVLO threshold setting compared to other family members.

Isolators - Gate Drivers Replacement Considerations

Direct substitutes within the same family include the ADUM4120ARIZ-RL, which lacks the specific UVLO configuration of the -1 variant. Verify that any replacement maintains the 5000 Vrms isolation rating and compatible SOIC-6 footprint.

Isolators - Gate Drivers FAQ

What is the function of the input glitch filter?

The input glitch filter reduces the probability of noise on the input pins triggering the output, ensuring more reliable switching performance.

How does the UVLO feature benefit the circuit?

The multiple UVLO options on the VDD2 output allow for precise control over when the gate driver activates, protecting the connected power devices from operating in undefined states.