Analog Devices Inc. ADUM3220BRZ

Overview

ADUM3220BRZ 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 shoot-through protection logic, 3.3 V–5.5 V input logic compatibility, and 4.5 V–18 V output drive capability-designed for high-reliability isolated gate drive in synchronous DC-DC converters.

For engineers reviewing the ADUM3220BRZ datasheet, ADUM3220BRZ pinout, ADUM3220BRZ application, or ADUM3220BRZ equivalent, key selection criteria include its reinforced 2500 V_rms isolation rating, UVLO thresholds (4.1 V / 7.0 V options), thermal shutdown at >150°C, and SOIC-8 narrow-body package with 5 mm × 6 mm footprint.

Technical Context

The ADUM3220BRZ integrates iCoupler® monolithic transformer isolation with CMOS input circuitry and high-current output drivers on a single die. Its two independent isolation channels provide galvanic separation between low-voltage control logic (VDD1 side) and high-power gate drive circuits (VDD2 side), enabling safe level translation across the barrier without pulse transformers.

Unlike non-isolated drivers, it delivers precise timing (≤60 ns t_PD, ≤5 ns t_PSKCD) while maintaining >25 kV/µs common-mode transient immunity and IEC 61000-4-x ESD robustness. The shoot-through protection logic ensures only one output is active at a time-critical for half-bridge configurations where cross-conduction must be avoided.

Key Specifications

Pinout & Package

Narrow-body, RoHS-compliant 8-lead SOIC package (5 mm × 6 mm × 1.6 mm); creepage/clearance ≥4.01 mm / 4.90 mm; reinforced insulation barrier separates Pins 1–4 (input side) from Pins 5–8 (output side).

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADUM3220BRZ, ADUM3221BRZ removes shoot-through logic for flexible dual-output control, while Si8273BD-IS trades package size and cost for higher drive strength and noise immunity-making ADUM3220BRZ optimal for cost-sensitive, safety-critical half-bridge applications needing guaranteed shoot-through prevention.

Availability

ADUM3220BRZ is available at Aetrix Electronics and suitable for isolated synchronous dc-to-dc converters, MOSFET/IGBT gate drivers, and automotive power electronics requiring stable component supply and long-term lifecycle support.

Supply support for ADUM3220BRZ 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 ADuM3220BRZ belongs to the iCoupler® isolated gate driver product line, engineered specifically for robust, timing-precise, and safety-certified gate drive in high-noise power conversion systems.

FAQ

What is the UVLO threshold for ADUM3220BRZ on the VDD2 supply?

The ADUM3220BRZ has a VDD2 UVLO with a positive-going threshold of 4.1 V and negative-going threshold of 3.2 V, providing 0.4 V hysteresis. This ensures stable gate drive startup and shutdown behavior during supply transients. The ADUM3220BRZ remains disabled until VDD2 exceeds 4.1 V, then stays active down to 3.2 V before disabling again-preventing erratic output states during brown-out conditions.

Does ADUM3220BRZ support 3.3 V logic inputs?

Yes, ADUM3220BRZ supports 3.3 V logic inputs across its full operating range. Its input thresholds scale with VDD1: VIH = 0.7 × VDD1 and VIL = 0.3 × VDD1, so at VDD1 = 3.3 V, VIH = 2.31 V and VIL = 0.99 V-fully compatible with standard 3.3 V CMOS logic families. The ADUM3220BRZ also maintains full timing performance (≤60 ns propagation delay) at 3.3 V input operation.

How does the shoot-through protection logic work in ADUM3220BRZ?

The ADUM3220BRZ implements hardware-level shoot-through protection that prevents both VOA and VOB outputs from being high simultaneously. When one channel is asserted high, the other is forced low regardless of its input state-ensuring no cross-conduction in half-bridge configurations. This logic is intrinsic to the ADUM3220BRZ silicon design and requires no external components or timing adjustments.

What isolation certifications apply to ADUM3220BRZ?

ADUM3220BRZ is UL recognized (2500 V_rms/1 min, file E214100), CSA certified (Notice #5A), and VDE certified to DIN V VDE V 0884-10:2006-12 for reinforced insulation (VIORM = 560 V_peak). These approvals confirm suitability for end-equipment requiring basic, functional, or reinforced isolation per IEC 61000-4-x and IEC 60950-1 standards.

Can ADUM3220BRZ drive SiC MOSFETs effectively?

Yes, ADUM3220BRZ can drive SiC MOSFETs effectively due to its 4 A peak output current, fast 14–25 ns rise/fall times (at 10 V VDD2), and 18 V maximum VDD2 supply-enabling full enhancement of high-threshold SiC devices. Its 5 ns channel matching and low propagation delay skew help minimize switching losses in high-frequency SiC-based topologies such as totem-pole PFC and LLC resonant converters.