Analog Devices Inc. ADUM3223CRZ

Overview

ADUM3223CRZ 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. 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-used in isolated IGBT/MOSFET gate drives for switching power supplies.

For engineers reviewing the ADUM3223CRZ datasheet, ADUM3223CRZ pinout, ADUM3223CRZ application, or ADUM3223CRZ equivalent, this page delivers verified technical context, real-world timing and isolation specs, thermal shutdown behavior, safety certification details (UL, VDE, CSA), and precise selection guidance against comparable isolated drivers.

Technical Context

The ADUM3223CRZ integrates iCoupler® monolithic transformer isolation with dual-channel CMOS input decoding to deliver independent high-side (VOA) and low-side (VOB) gate drive outputs. Its architecture enables true galvanic isolation between input (VDD1/GND1) and each output domain (VDDA/GNDA and VDDB/GNDB), supporting ±537 V peak working voltage relative to input and 800 V peak differential voltage across the bridge.

It features two-stage undervoltage lockout (UVLO): 2.5 V on VDD1 and grade-specific thresholds on VDD2 (4.1 V for A-grade, 7.0 V for B-grade, 11.0 V for C-grade), plus thermal shutdown at 150°C rising edge. Propagation delay matching is ≤5 ns (typ), with >25 kV/µs common-mode transient immunity and default-low output state upon power loss or disable assertion.

Key Specifications

Pinout & Package

ADUM3223CRZ uses a narrow-body 16-lead SOIC package (SOIC_N-16), 10.3 mm × 7.5 mm footprint, 2.35 mm height, with creepage/clearance ≥4.0 mm per safety standards.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar isolated half-bridge gate drive applications.

Compared with ADUM4223BRWZ, ADUM3223CRZ offers narrower SOIC packaging and lower creepage-ideal for space-constrained 400 V AC systems-while Si8273BD-D-IS trades regulatory compliance for faster skew but lacks reinforced insulation validation for automotive or medical use.

Availability

ADUM3223CRZ is available at Aetrix Electronics and suitable for switching power supplies, isolated IGBT/MOSFET gate drives, and industrial inverters requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for ADUM3223CRZ 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 ADuM3223CRZ belongs to the iCoupler® isolated gate driver product line, engineered specifically for robust, high-speed, and safety-certified control of power switches in industrial, automotive, and energy infrastructure systems.

FAQ

What is the isolation voltage rating of the ADUM3223CRZ?

The ADUM3223CRZ is rated for 3000 V_rms isolation for 1 minute per UL 1577, with a maximum working insulation voltage (VIORM) of 560 V_peak per VDE V 0884-10. This qualifies it for reinforced insulation in systems up to 400 V AC mains. The ADUM3223CRZ achieves this via Analog Devices' iCoupler® silicon-based transformer isolation, eliminating LED aging and CMTI drift issues found in optocouplers.

Does the ADUM3223CRZ support 3.3 V microcontroller inputs?

Yes, the ADUM3223CRZ fully supports 3.3 V CMOS input logic: its VIH threshold is 0.7 × VDD1 and VIL is 0.3 × VDD1, so with VDD1 = 3.3 V, it accepts 2.31 V high and 0.99 V low-compatible with standard 3.3 V GPIOs. The ADUM3223CRZ also draws only 1.4 mA quiescent current at 3.3 V, minimizing MCU interface loading.

What is the purpose of the DISABLE pin on the ADUM3223CRZ?

The DISABLE pin (Pin 6) is an active-low control that forces both VOA and VOB outputs low regardless of input states-ensuring safe turn-off of external power devices during fault conditions. When asserted, the ADUM3223CRZ enters a low-power state with minimal current draw. This function is critical in overcurrent or overtemperature protection schemes where immediate gate shutdown is required.

How does the ADUM3223CRZ handle undervoltage conditions on its output supply?

The ADUM3223CRZ implements grade-specific VDD2 undervoltage lockout: the ADUM3223CRZ is a C-grade device with UVLO thresholds of 10.5 V (rising) and 8.9 V (falling), hysteresis 0.9 V. If VDD2 drops below 8.9 V, outputs disable and remain low until VDD2 exceeds 10.5 V-preventing weak or oscillatory gate drive during brownout. This eliminates need for external UVLO monitoring circuitry.

Can the ADUM3223CRZ drive SiC MOSFETs directly?

Yes, the ADUM3223CRZ can directly drive most discrete SiC MOSFETs: its 4 A peak source/sink current, 12 ns typical rise/fall time (at 12 V, 2 nF), and 54 ns max propagation delay meet requirements for 10–20 A SiC devices with Q_g ≤ 35 nC. However, layout must minimize loop inductance, and external gate resistors may be needed to dampen ringing-verified in ADUM3223CRZ application notes for 1.2 kV SiC half-bridges.