ADUM4221ARWZ-RL7 - Isolated Half-Bridge Gate Driver | Analog Devices
MPN: ADUM4221ARWZ-RL7 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.16 | $4.16 |
| 10 | $3.75 | $37.50 |
| 100 | $3.2 | $320.00 |
| 500 | $2.85 | $1,425.00 |
| 1,000 | $2.5 | $2,500.00 |
Drop-in alternatives for ADUM4221ARWZ-RL7 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
ADUM4221-2ARIZ-RL
β Drop-Inπ Reference alternative (not in catalog)
ADUM4221BRIZ
β Drop-Inπ Reference alternative (not in catalog)
UCC21520DW
β Drop-Inπ Reference alternative (not in catalog)
Si8233BB-D-IS1
β Drop-Inπ Reference alternative (not in catalog)
ADUM4221ARWZ-RL7 Maximum Ratings & Electrical Characteristics
| Technology | iCoupler |
| Number of Channels | 2 |
| Peak Output Current | 4 A |
| Isolation Voltage | 5700 Vrms |
| Propagation Delay | 60 ns (typical) |
| Common-Mode Transient Immunity | 100 kV/us |
| Adjustable Dead Time | Yes |
| Supply Voltage (Input Side) | 2.7 V to 6.5 V |
| Supply Voltage (Output Side) | 4.5 V to 18 V |
| Package | 16-SOIC |
| Operating Temperature Range | -40Β°C to +125Β°C |
| RoHS | Compliant |
| Mounting Type | Surface Mount |
| MSL Level | 1 |
| Output Configuration | Half-Bridge |
ADUM4221ARWZ-RL7 Pin Configuration
| Pin 1 | VDD1 β Input-side supply voltage |
| Pin 2 | GND1 β Input-side ground |
| Pin 3 | VIA β Input signal for high-side driver |
| Pin 4 | VIB β Input signal for low-side driver |
| Pin 5 | DT β Dead time adjustment |
| Pin 6 | GND1 β Input-side ground |
| Pin 7 | NC β No connect |
| Pin 8 | NC β No connect |
| Pin 9 | VDD2 β Output-side supply voltage |
| Pin 10 | VOA β High-side output |
| Pin 11 | GND2 β Output-side ground |
| Pin 12 | VOB β Low-side output |
| Pin 13 | GND2 β Output-side ground |
| Pin 14 | NC β No connect |
| Pin 15 | NC β No connect |
| Pin 16 | GND1 β Input-side ground |
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
ADUM4221ARWZ-RL7 is suitable for 6 applications: Isolated Switch-Mode Power Supplies, Motor Drives, Solar Inverters, Industrial Automation, Electric Vehicle Chargers, Uninterruptible Power Supplies (UPS).
Isolated Switch-Mode Power Supplies
The ADUM4221ARWZ-RL7 is ideal for isolated switch-mode power supplies (SMPS) due to its 4 A peak output current and 5700 Vrms isolation. It drives the primary-side MOSFETs in half-bridge or full-bridge topologies, providing fast switching and reduced losses. The adjustable dead time prevents shoot-through, enhancing reliability. Its high common-mode transient immunity ensures stable operation in noisy power environments. The device's wide output supply range (4.5 V to 18 V) accommodates various gate drive voltages, making it versatile for different SMPS designs.
Recommended
Motor Drives
In motor drive applications, the ADUM4221ARWZ-RL7 provides isolated gate drive for the inverter stage, driving IGBTs or MOSFETs in half-bridge configurations. Its 4 A peak output current ensures fast charging of gate capacitances, reducing switching losses. The adjustable dead time is critical for preventing shoot-through in motor drives, improving efficiency and reliability. The high isolation voltage (5700 Vrms) protects the control circuitry from high-voltage transients. The device's fast propagation delay (60 ns) enables precise PWM control, essential for smooth motor operation.
Recommended
Solar Inverters
The ADUM4221ARWZ-RL7 is well-suited for solar inverters, where it drives the power stage in half-bridge or full-bridge configurations. Its 4 A peak output current and adjustable dead time optimize switching performance, maximizing inverter efficiency. The high isolation voltage (5700 Vrms) ensures safety in high-voltage DC bus systems. The device's wide operating temperature range (-40Β°C to +125Β°C) makes it suitable for outdoor installations. Its high common-mode transient immunity (100 kV/us) ensures reliable operation in the presence of fast voltage transients from the grid.
Recommended
Industrial Automation
In industrial automation, the ADUM4221ARWZ-RL7 provides isolated gate drive for power stages in motor controllers, robotics, and process control equipment. Its 4 A peak output current and adjustable dead time ensure efficient and reliable switching. The high isolation voltage (5700 Vrms) protects sensitive control electronics from industrial noise and transients. The device's fast propagation delay (60 ns) enables precise timing in high-speed switching applications. Its robust design and wide temperature range make it suitable for harsh industrial environments.
Recommended
Electric Vehicle Chargers
The ADUM4221ARWZ-RL7 is used in electric vehicle (EV) chargers to drive the power stage in AC-DC and DC-DC converters. Its 4 A peak output current and adjustable dead time enable efficient power conversion, reducing charging time. The high isolation voltage (5700 Vrms) ensures safety in high-voltage systems. The device's wide operating temperature range and high common-mode transient immunity make it suitable for automotive environments. Its fast propagation delay (60 ns) supports high-frequency switching, improving power density.
Recommended
Uninterruptible Power Supplies (UPS)
In UPS systems, the ADUM4221ARWZ-RL7 drives the inverter stage, providing isolated gate drive for IGBTs or MOSFETs. Its 4 A peak output current and adjustable dead time ensure efficient and reliable switching, critical for maintaining power quality. The high isolation voltage (5700 Vrms) protects control circuitry from high-voltage transients. The device's fast propagation delay (60 ns) enables precise PWM control, essential for stable output voltage. Its wide temperature range and high common-mode transient immunity make it suitable for demanding UPS applications.
Recommended
Recommended Products Summary
Engineering reference data for ADUM4221ARWZ-RL7 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADUM4221-2ARIZ-RL | ADUM4221BRIZ | UCC21520DW | Si8233BB-D-IS1 |
|---|---|---|---|---|---|
| Package | 16-SOIC | 16-SOIC | 16-SOIC | 16-SOIC | 16-SOIC |
| Brand | Analog Devices | Analog Devices | Analog Devices | Texas Instruments | Skyworks Solutions |
| Peak Output Current | 4 A | 4 A | 4 A | 4 A | 4 A |
| Isolation Voltage | 5700 Vrms | 5700 Vrms | 5700 Vrms | 5700 Vrms | 5000 Vrms |
| Propagation Delay | 60 ns | 60 ns | 60 ns | 30 ns | 60 ns |
| Common-Mode Transient Immunity | 100 kV/us | 100 kV/us | 100 kV/us | 100 kV/us | 75 kV/us |
| Adjustable Dead Time | Yes | Yes | Yes | Yes | Yes |
| UVLO Threshold | 4.5 V | 4.5 V | 7.5 V | 4.5 V | 4.5 V |
Key Differentiators
- Higher isolation voltage (5700 Vrms) compared to ADUM3221 (2500 Vrms) (vs ADUM3221WARZ-RL7)
- Adjustable dead time feature (vs UCC21520DW)
- Same-brand drop-in compatibility with ADUM4221-2ARIZ-RL (vs ADUM4221-2ARIZ-RL)
Design Notes
Ensure proper PCB layout for the ADUM4221ARWZ-RL7 to minimize parasitic inductance and maintain signal integrity. Place the device close to the power transistors to reduce gate drive loop inductance. Use wide traces for the output pins (VOA, VOB) and provide adequate ground planes. Decouple the input and output supplies with 0.1 uF and 10 uF capacitors placed near the respective pins.
The ADUM4221ARWZ-RL7 dissipates power during switching, especially at high frequencies. Ensure adequate thermal management by providing copper pour on the PCB and possibly a thermal via array under the device. The junction-to-ambient thermal resistance (theta_JA) is typically 100Β°C/W for the SOIC-16 package. For high-frequency operation, consider reducing the switching frequency or using a heatsink.
Avoid exceeding the absolute maximum ratings for supply voltages and output currents. Ensure the dead time is set appropriately to prevent shoot-through currents in half-bridge configurations. Use the DT pin to set the dead time with an external resistor. Also, ensure that the input signals (VIA, VIB) are properly referenced to GND1 and have sufficient pulse widths to avoid missing pulses.
Compliance Information
RoHS compliance is stated in the datasheet. Other compliance information is not explicitly provided in the verified data.
