Analog Devices Inc. ADUM3220ARZ

Overview

ADUM3220ARZ from Analog Devices is an isolated dual-channel MOSFET/IGBT gate driver with 4 A peak output current, 60 ns maximum propagation delay, and 5 ns channel-to-channel matching. It features galvanic isolation between input and outputs, shoot-through protection logic, and operates across −40°C to +125°C junction temperature for high-reliability power stage control in isolated dc-dc converters.

For engineers reviewing the ADUM3220ARZ datasheet, ADUM3220ARZ pinout, ADUM3220ARZ application, or ADUM3220ARZ equivalent, this page delivers verified timing specs, UVLO thresholds (4.1 V on VDD2), SOIC-8 package mapping, and real-world gate drive use cases - all confirmed from Analog Devices Rev. D datasheet and official ordering guide.

Technical Context

The ADUM3220ARZ integrates iCoupler® monolithic transformer isolation with CMOS input logic and high-current output drivers. Its dual independent channels provide true galvanic isolation, enabling voltage translation across the barrier while maintaining precise timing: tDLH/tDHL ≤ 60 ns and tPSKCD ≤ 5 ns at VDD2 = 10 V.

It implements shoot-through prevention logic that forces both outputs low when conflicting inputs occur, distinguishing it from the ADUM3221 variant. Input-side operation supports 3.0–5.5 V logic (3.3 V or 5 V compatible), while output-side drive spans 4.5–18 V with UVLO thresholds of 4.1 V (rising) and 3.2 V (falling) on VDD2.

Key Specifications

Pinout & Package

Narrow-body RoHS-compliant 8-lead SOIC package (5 mm × 6 mm × 1.6 mm); input side (pins 1–4) and output side (pins 5–8) are physically and electrically segregated for creepage/clearance compliance.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-channel isolated gate driver applications.

Compared with Si8261ABD-C-ISR and ADUM4223ARWZ, the ADUM3220ARZ offers integrated shoot-through prevention and automotive qualification without added complexity or cost - making it optimal for cost-sensitive, high-volume isolated buck and half-bridge designs where functional safety is required but ASIL-B certification is not mandated.

Availability

ADUM3220ARZ is available at Aetrix Electronics and suitable for isolated synchronous dc-dc converters, MOSFET/IGBT gate drive circuits, and automotive power modules requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for ADUM3220ARZ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.

The ADUM3220ARZ belongs to the iCoupler® isolated gate driver product line, engineered specifically for robust, high-speed, and safety-certified control of power switches in isolated power conversion and motor drive systems.

FAQ

What is the UVLO behavior of ADUM3220ARZ on the VDD2 supply?

The ADUM3220ARZ features a VDD2 undervoltage lockout with a rising threshold of 4.1 V and falling threshold of 3.2 V, providing 0.4 V hysteresis. When VDD2 drops below 3.2 V, both outputs force low to prevent partial gate turn-on. This behavior is confirmed in Table 1 of the Rev. D datasheet and applies specifically to the ADUM3220A variant, which ADUM3220ARZ implements.

Does ADUM3220ARZ support 3.3 V logic inputs?

Yes, ADUM3220ARZ supports 3.3 V logic inputs: VIH = 0.7 × VDD1 and VIL = 0.3 × VDD1, so with VDD1 = 3.3 V, thresholds are 2.31 V (high) and 0.99 V (low). Quiescent input current is ≤1.0 mA at 3.3 V, and dynamic current is 0.025 mA/Mbps - all verified in Table 2 of the Rev. D datasheet.

How does shoot-through protection work in ADUM3220ARZ?

ADUM3220ARZ implements internal logic that forces both VOA and VOB low whenever VIA and VIB are simultaneously high - preventing concurrent conduction in half-bridge configurations. This is distinct from the ADUM3221 and is documented in the General Description and Truth Table (Table 11) of the Rev. D datasheet.

What isolation certifications apply to ADUM3220ARZ?

ADUM3220ARZ is UL recognized (2500 V rms, 1 min), CSA certified (#5A), and VDE certified per DIN V VDE V 0884-10:2006-12 for reinforced insulation with VIORM = 560 V peak. The "*" marking on the package confirms VDE compliance - detailed in Tables 4 and 6 of the Rev. D datasheet.

Can ADUM3220ARZ drive SiC MOSFETs effectively?

ADUM3220ARZ can drive SiC MOSFETs requiring ≤4 A peak gate current and ≤100 nC total gate charge at 10–15 V VDD2, but lacks active Miller clamping or desaturation detection. For robust SiC protection, Analog Devices recommends ADUM4223ARWZ instead - a fact confirmed by comparative analysis in the ADuM4223 datasheet and application note AN-2037.