ADUM4221BRWZ-RL7 - Isolated Half-Bridge Gate Driver | Analog Devices
MPN: ADUM4221BRWZ-RL7 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.85 | $4.85 |
| 10 | $4.36 | $43.60 |
| 100 | $3.88 | $388.00 |
| 500 | $3.49 | $1,745.00 |
| 1,000 | $3.1 | $3,100.00 |
Drop-in alternatives for ADUM4221BRWZ-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:
ADUM4221BRWZ
β Drop-Inβ In Stock
$3.1 / Unit
View Datasheet βADUM4221-1BRWZ
β Drop-Inπ Reference alternative (not in catalog)
ADUM4221-2BRWZ
β Drop-Inπ Reference alternative (not in catalog)
UCC21520DW
β Drop-Inπ Reference alternative (not in catalog)
SI8271GB-IS
β Drop-Inπ Reference alternative (not in catalog)
ADUM4221BRWZ-RL7 Maximum Ratings & Electrical Characteristics
| Technology | iCoupler (magnetic isolation) |
| Number of Channels | 2 |
| Peak Output Current | 4 A |
| Isolation Voltage | 3000 Vrms |
| Propagation Delay (max) | 44 ns |
| Common-Mode Transient Immunity | 150 kV/Β΅s |
| Output Rise Time | 25 ns |
| Output Fall Time | 25 ns |
| Supply Voltage Range | 2.5 V to 35 V |
| Adjustable Dead Time | Yes |
| Input Logic Levels | CMOS |
| Operating Temperature Range | -40Β°C to +125Β°C |
| Package | 16-lead SOIC (BRWZ) |
| Mounting Type | Surface Mount |
| Default Output State | Low |
ADUM4221BRWZ-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 High-side output supply voltage |
| Pin 10 | VOA β High-side gate drive output |
| Pin 11 | GND2 β High-side ground |
| Pin 12 | GND2 β High-side ground |
| Pin 13 | VOB β Low-side gate drive output |
| Pin 14 | VDD2 β Low-side output supply voltage |
| Pin 15 | NC β No connect |
| Pin 16 | NC β No connect |
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
ADUM4221BRWZ-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 ADUM4221BRWZ-RL7 is ideal for isolated switch-mode power supplies (SMPS) where high-side and low-side MOSFETs need to be driven with galvanic isolation. Its 4 A peak output current and 44 ns propagation delay enable efficient high-frequency switching, while the adjustable dead time prevents shoot-through. The 3000 Vrms isolation ensures safety and noise immunity in offline power supplies. Designers can use it in flyback, forward, and half-bridge topologies to achieve high power density and reliability.
Recommended
Motor Drives
In motor drive applications, the ADUM4221BRWZ-RL7 provides robust gate driving for IGBTs and MOSFETs in half-bridge configurations. Its high common-mode transient immunity of 150 kV/Β΅s ensures reliable operation in the presence of motor-induced noise and fast voltage transients. The adjustable dead time allows optimization of switching to minimize losses and prevent cross-conduction. The wide supply voltage range of 2.5 V to 35 V accommodates various gate drive supply levels, making it suitable for industrial motor control.
Recommended
Solar Inverters
The ADUM4221BRWZ-RL7 is well-suited for solar inverter applications, where high-voltage isolation and reliable gate driving are critical. Its 3000 Vrms isolation protects the control circuitry from the high DC bus voltage, while the 4 A peak output current ensures fast switching of power transistors. The adjustable dead time helps optimize efficiency and reduce electromagnetic interference. The device's high operating temperature range of up to 125Β°C makes it suitable for outdoor installations where ambient temperatures can be high.
Recommended
Industrial Automation
In industrial automation, the ADUM4221BRWZ-RL7 is used in programmable logic controllers (PLCs), robotic systems, and factory automation equipment. Its robust isolation and high common-mode transient immunity ensure reliable operation in electrically noisy environments. The device's adjustable dead time allows precise control of half-bridge outputs, which is essential for driving inductive loads such as solenoids and actuators. The wide supply voltage range and high temperature rating make it suitable for harsh industrial conditions.
Recommended
Electric Vehicle Chargers
The ADUM4221BRWZ-RL7 is suitable for electric vehicle (EV) chargers, where isolation and high current drive are required for power stage MOSFETs. Its 4 A peak output current can drive large gate capacitances, enabling efficient switching at high frequencies. The 3000 Vrms isolation ensures safety between the AC mains and the vehicle's DC bus. The adjustable dead time helps prevent shoot-through in the power stage, improving reliability. The device's wide temperature range supports operation in automotive environments.
Recommended
Uninterruptible Power Supplies (UPS)
In UPS systems, the ADUM4221BRWZ-RL7 is used to drive the inverter stage, providing isolation and high current drive for IGBTs. Its high common-mode transient immunity ensures stable operation during load transients and grid disturbances. The adjustable dead time allows optimization of switching to minimize losses and improve efficiency. The device's wide supply voltage range and high temperature rating make it suitable for continuous operation in demanding environments.
Recommended
Recommended Products Summary
Engineering reference data for ADUM4221BRWZ-RL7 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADUM4221BRWZ | ADUM4221-1BRWZ | ADUM4221-2BRWZ | UCC21520DW | SI8271GB-IS |
|---|---|---|---|---|---|---|
| Package | 16-lead SOIC | 16-lead SOIC | 16-lead SOIC | 16-lead SOIC | 16-lead SOIC | 16-lead SOIC |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Texas Instruments | Skyworks Solutions |
| Peak Output Current | 4 A | 4 A | 4 A | 4 A | 4 A | 4 A |
| Isolation Voltage | 3000 Vrms | 3000 Vrms | 3000 Vrms | 3000 Vrms | 3000 Vrms | 2500 Vrms |
| Propagation Delay (max) | 44 ns | 44 ns | 44 ns | 44 ns | 30 ns | 30 ns |
| Common-Mode Transient Immunity | 150 kV/Β΅s | 150 kV/Β΅s | 150 kV/Β΅s | 150 kV/Β΅s | 100 kV/Β΅s | 200 kV/Β΅s |
| Adjustable Dead Time | Yes | Yes | Yes | No | Yes | No |
| Supply Voltage Range | 2.5 V to 35 V | 2.5 V to 35 V | 2.5 V to 35 V | 2.5 V to 35 V | 3 V to 18 V | 2.5 V to 30 V |
Key Differentiators
- Adjustable dead time (vs SI8271GB-IS)
- Higher isolation voltage (vs SI8271GB-IS)
- Wider supply voltage range (vs UCC21520DW)
Design Notes
Place decoupling capacitors (0.1 Β΅F and 10 Β΅F) close to the VDD1 and VDD2 pins to ensure stable supply voltages. Use low-ESR ceramic capacitors to minimize voltage spikes during switching. The input and output grounds should be separated to maintain isolation integrity.
Keep the gate drive traces short and wide to minimize parasitic inductance and resistance. This reduces ringing and ensures fast switching. Route the high-side and low-side output traces symmetrically to balance the drive strength and minimize timing skew.
The ADUM4221BRWZ-RL7 can dissipate significant power when driving large gate capacitances at high frequencies. Ensure adequate copper area on the PCB for heat dissipation. The SOIC package has a thermal resistance of approximately 100Β°C/W, so consider the ambient temperature and switching frequency to avoid exceeding the maximum junction temperature of 125Β°C.
Compliance Information
RoHS compliant per Analog Devices product page. Not AEC-Q100 qualified; automotive grade variant ADUM3221WBRZ-RL7 is available.
