Analog Devices Inc. ADUM3223BRZ

Overview

ADUM3223BRZ from Analog Devices is a 4 A isolated precision half-bridge gate driver in a narrow-body 16-lead SOIC package, delivering independent galvanically isolated high-side and low-side outputs with 3000 V_rms isolation rating. It supports 3.3 V–5.5 V CMOS input logic, 4.5 V–18 V output drive, 54 ns max propagation delay, and operates up to 125°C junction temperature-designed for IGBT/MOSFET control in isolated switching power supplies.

For engineers reviewing the ADUM3223BRZ datasheet, ADUM3223BRZ pinout, ADUM3223BRZ application, or ADUM3223BRZ equivalent, key selection criteria include its 537 V_peak working voltage (high-side/low-side relative to input), 800 V_peak high-side-to-low-side differential voltage, thermal shutdown at 150°C, UVLO thresholds specific to B-grade (7.0 V on VDD2), and reinforced insulation per DIN V VDE V 0884-10 (VIORM = 560 V_peak).

Technical Context

The ADUM3223BRZ integrates iCoupler® monolithic transformer isolation with dual-channel CMOS input decoding and independent high-side/low-side gate drive circuitry. Its architecture enables true galvanic separation between input logic and both output channels, supporting asymmetric rail configurations where high-side and low-side outputs operate at different potentials up to 800 V_peak differential.

It features precise timing control via matched propagation paths (5 ns max channel-to-channel matching), high common-mode transient immunity (>25 kV/µs), and configurable undervoltage lockout (UVLO) on VDD2 set to 7.0 V (B-grade), ensuring robust operation during supply brownouts in industrial motor drives and solar inverters.

Key Specifications

Pinout & Package

ADUM3223BRZ uses a narrow-body 16-lead SOIC package (package code: RW-16), with creepage and clearance ≥4.0 mm per safety standards. Pin 1 is marked with a dot; pins 9 and 10 are NC (no connect). The device has two isolated supply domains: VDD1/GND1 (input side) and VDDA/GNDA/VDDB/GNDB (output side).

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADUM4223BRWZ, the ADUM3223BRZ offers identical timing and B-grade UVLO but lower isolation rating-ideal for space-constrained 400 V systems. Versus SI8273BD-D-IS, it provides superior CMTI (>25 kV/µs vs. 20 kV/µs) and tighter propagation delay matching (5 ns vs. 10 ns), critical for high-fidelity PWM fidelity.

Availability

ADUM3223BRZ is available at Aetrix Electronics and suitable for industrial motor drives, solar inverters, and uninterruptible power supplies requiring stable component supply, long-term lifecycle support, and traceable sourcing for safety-critical designs.

Supply support for ADUM3223BRZ 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 ADUM3223BRZ belongs to the iCoupler® isolated gate driver product line, engineered specifically for robust, high-speed, and safety-certified control of power switches in harsh industrial and automotive environments.

FAQ

What is the isolation voltage rating of the ADUM3223BRZ?

The ADUM3223BRZ is rated for 3000 V_rms isolation for 1 minute per UL 1577 and provides reinforced insulation with a maximum working voltage of 560 V_peak (VIORM) per DIN V VDE V 0884-10. This rating applies to the narrow-body 16-lead SOIC package and is verified through 100% production testing at 1050 V_peak.

Does the ADUM3223BRZ support both 3.3 V and 5 V input logic?

Yes, the ADUM3223BRZ accepts 3.3 V or 5 V CMOS input logic on VIA and VIB pins. Input thresholds scale with VDD1: VIH = 0.7 × VDD1 and VIL = 0.3 × VDD1. The device operates across VDD1 = 3.0 V to 5.5 V, making ADUM3223BRZ compatible with both low-voltage microcontrollers and legacy 5 V control systems.

What is the UVLO threshold on VDD2 for the ADUM3223BRZ?

The ADUM3223BRZ is a B-grade variant, so its VDD2 undervoltage lockout activates at a positive-going threshold of 6.9 V to 7.4 V and releases at 5.7 V to 6.2 V (hysteresis ≈ 0.7 V). This ensures ADUM3223BRZ disables gate drive outputs reliably when the output-side supply falls below safe operating levels for 12 V–15 V gate drive rails.

Can the ADUM3223BRZ drive SiC MOSFETs directly?

Yes, the ADUM3223BRZ delivers 4 A peak source/sink current and supports fast rise/fall times (6–18 ns into 2 nF), making it suitable for direct gate driving of medium-power SiC MOSFETs. Its 54 ns max propagation delay and 5 ns channel-to-channel matching preserve timing accuracy critical for SiC's high-speed switching, provided layout minimizes parasitic inductance.

How does thermal shutdown work in the ADUM3223BRZ?

The ADUM3223BRZ incorporates thermal shutdown that triggers at TJ = 150°C (rising edge) and resets at TJ = 140°C (falling edge). When activated, it forces both VOA and VOB low. This protection is internal and independent of supply voltages-ensuring ADUM3223BRZ remains safe even during sustained overloads or inadequate heatsinking in enclosed industrial enclosures.