ADUM3221ARZ - Isolated 4A Dual-Channel Gate Driver | Analog Devices
MPN: ADUM3221ARZ ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.16 | $2.16 |
| 10 | $1.95 | $19.50 |
| 100 | $1.75 | $175.00 |
| 500 | $1.58 | $790.00 |
| 1,000 | $1.52 | $1,520.00 |
Drop-in alternatives for ADUM3221ARZ — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ADUM3221ARZ-RL7
✅ Drop-In✓ In Stock
$2.2 / Unit
View Datasheet →ADUM3221WARZ
✅ Drop-In📋 Reference alternative (not in catalog)
ADUM3221TRZ-EP-RL7
✅ Drop-In📋 Reference alternative (not in catalog)
ADUM3220ARZ
✅ Drop-In✓ In Stock
$2.2 / Unit
View Datasheet →ADUM3221ARZ Maximum Ratings & Electrical Characteristics
| Number of Channels | 2 |
| Peak Output Current | 4 A |
| Isolation Voltage | 2500 Vrms |
| Propagation Delay | 60 ns (max) |
| Channel-to-Channel Matching | 5 ns (max) |
| UVLO Threshold | 4.1 V (nominal) |
| Package / Case | 8-SOIC (0.154, 3.90mm Width) |
| Mounting Type | Surface Mount |
| Operating Temperature Range | [DATA_NEEDED: operating temperature range] |
| Supply Voltage Range | [DATA_NEEDED: supply voltage range] |
| Technology | iCoupler |
| RoHS Status | RoHS Compliant |
| Lead Free Status | Lead Free |
| Data Rate | N/A |
| Isolation Type | Magnetic Coupling |
ADUM3221ARZ Pin Configuration
| Pin 1 | VDD1 — Input supply voltage |
| Pin 2 | GND1 — Input ground |
| Pin 3 | VIA — Input signal for channel A |
| Pin 4 | VIB — Input signal for channel B |
| Pin 5 | GND2 — Output ground |
| Pin 6 | VOA — Output for channel A |
| Pin 7 | VOB — Output for channel B |
| Pin 8 | VDD2 — Output supply voltage |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
ADUM3221ARZ is suitable for 6 applications: Isolated DC-DC Converters, Motor Drives, Power Inverters, Electric Vehicle Chargers, Industrial Power Supplies, Renewable Energy Systems.
Isolated DC-DC Converters
The ADUM3221ARZ is ideal for isolated DC-DC converters, where its 4 A peak output current and 60 ns propagation delay enable efficient switching of power MOSFETs. The galvanic isolation provided by iCoupler technology protects the control circuitry from high-voltage transients, ensuring reliable operation in power supply modules. Its fast switching reduces losses and improves overall converter efficiency, making it suitable for telecom, industrial, and automotive power systems.
Recommended
Motor Drives
In motor drive applications, the ADUM3221ARZ provides the high peak current and fast propagation delay needed to drive IGBTs and power MOSFETs in the inverter stage. The 2500 Vrms isolation protects the microcontroller from high-voltage transients and ground loops, enhancing system reliability. Its 5 ns channel-to-channel matching ensures balanced gate drive signals, reducing electromagnetic interference and improving motor control precision in industrial automation and robotics.
Recommended
Power Inverters
The ADUM3221ARZ is well-suited for power inverters used in solar and UPS systems. Its 4 A peak output current enables fast charging and discharging of the gate capacitance of power switches, reducing switching losses. The isolation barrier ensures safe operation in high-voltage environments, while the UVLO feature prevents insufficient gate drive during power-up. The device's wide operating temperature range makes it reliable in outdoor and harsh industrial conditions.
Recommended
Electric Vehicle Chargers
In electric vehicle (EV) chargers, the ADUM3221ARZ provides reliable gate drive for power switches in the AC-DC and DC-DC stages. Its 2500 Vrms isolation meets safety requirements for high-voltage systems, while the 4 A peak output current ensures efficient switching of SiC and GaN devices. The fast propagation delay and channel-to-channel matching contribute to high-frequency operation, reducing the size of magnetic components and improving charger efficiency.
Recommended
Industrial Power Supplies
The ADUM3221ARZ is used in industrial power supplies to drive power switches in isolated topologies such as flyback and forward converters. Its high peak output current and fast propagation delay enable efficient switching, reducing power dissipation and improving thermal performance. The galvanic isolation protects sensitive control electronics from high-voltage transients, ensuring reliable operation in factory automation and process control systems.
Recommended
Renewable Energy Systems
In renewable energy systems such as solar inverters and wind turbine converters, the ADUM3221ARZ provides robust gate drive with galvanic isolation. Its 4 A peak output current and 60 ns propagation delay enable efficient switching of power semiconductors, maximizing energy conversion efficiency. The device's wide operating temperature range and high reliability make it suitable for outdoor installations, while the UVLO feature ensures safe operation during power-up and fault conditions.
Recommended
Recommended Products Summary
Engineering reference data for ADUM3221ARZ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADUM3221ARZ-RL7 | ADUM3221WARZ | ADUM3221TRZ-EP-RL7 | ADUM3220ARZ |
|---|---|---|---|---|---|
| Package | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Peak Output Current | 4 A | 4 A | 4 A | 4 A | 2 A |
| Isolation Voltage | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms |
| Propagation Delay | 60 ns (max) | 60 ns (max) | 60 ns (max) | 60 ns (max) | 60 ns (max) |
| Channel-to-Channel Matching | 5 ns (max) | 5 ns (max) | 5 ns (max) | 5 ns (max) | 5 ns (max) |
| UVLO Threshold | 4.1 V (nominal) | 4.1 V (nominal) | 4.1 V (nominal) | 4.1 V (nominal) | 4.1 V (nominal) |
| Automotive Grade | No | No | Yes (AEC-Q100) | No | No |
Key Differentiators
- 4 A peak output current (vs ADUM3220ARZ)
- Automotive grade option (vs ADUM3221WARZ)
- Enhanced product variant (vs ADUM3221TRZ-EP-RL7)
Design Notes
Place decoupling capacitors (0.1 uF and 10 uF) close to the VDD1 and VDD2 pins to ensure stable supply voltages. Use a solid ground plane for both input and output sides, and maintain proper creepage and clearance distances for the isolation barrier as per the datasheet recommendations.
The ADUM3221ARZ can dissipate significant power when driving large capacitive loads at high frequencies. Ensure adequate copper area on the PCB for heat dissipation, and consider the thermal resistance of the 8-SOIC package. For high ambient temperatures, derate the output current accordingly.
Do not exceed the absolute maximum ratings for supply voltages and output currents. Ensure that the input signals are within the specified logic levels to avoid latch-up. Also, verify that the UVLO threshold is compatible with your supply voltage to prevent unintended operation during power-up.
Compliance Information
RoHS compliant and lead-free per DigiKey. Not AEC-Q100 qualified; use ADUM3221WARZ for automotive.
