ADUM4221BRWZ - Isolated Half-Bridge Gate Driver | Analog Devices
MPN: ADUM4221BRWZ 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 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:
ADUM4221BRIZ
β Drop-Inπ Reference alternative (not in catalog)
ADUM4221BRIZ-RL
β Drop-Inπ Reference alternative (not in catalog)
ADUM4223BRWZ
β Drop-Inπ Reference alternative (not in catalog)
ADUM4221-1BRIZ
β Drop-Inπ Reference alternative (not in catalog)
ISO7721
β Drop-Inπ Reference alternative (not in catalog)
Si8233
β Drop-Inπ Reference alternative (not in catalog)
ADUM4221BRWZ Maximum Ratings & Electrical Characteristics
| Technology | Magnetic Coupling (iCoupler) |
| Number of Channels | 2 |
| Peak Output Current | 4 A |
| Isolation Voltage | 5000 Vrms |
| Input Supply Voltage (VDD1) | 2.5 V to 6.5 V |
| Output Supply Voltage (VDDA/VDDB) | 4.5 V to 18 V |
| UVLO Threshold | 7.5 V (typical) |
| Propagation Delay | 60 ns (typical) |
| Common-Mode Transient Immunity (CMTI) | 100 kV/us |
| Adjustable Dead Time | Yes (via external resistor) |
| Package | 16-SOIC (wide body) |
| Operating Temperature Range | -40Β°C to +125Β°C |
| RoHS Status | Compliant |
| MSL Level | 3 (168 hours) |
| Mounting Type | Surface Mount |
ADUM4221BRWZ Pin Configuration
| Pin 1 | VDD1 β Input supply voltage (2.5 V to 6.5 V) |
| Pin 2 | GND1 β Input ground |
| Pin 3 | VIA β Input A (non-inverting) |
| Pin 4 | VIB β Input B (non-inverting) |
| Pin 5 | DISABLE β Disable input (active high) |
| Pin 6 | DT β Dead time adjust |
| Pin 7 | GND1 β Input ground |
| Pin 8 | NC β No connect |
| Pin 9 | VDDA β Output supply A (4.5 V to 18 V) |
| Pin 10 | VOA β Output A |
| Pin 11 | GNDA β Output ground A |
| Pin 12 | GNDB β Output ground B |
| Pin 13 | VOB β Output B |
| Pin 14 | VDDB β Output supply B (4.5 V to 18 V) |
| Pin 15 | NC β No connect |
| Pin 16 | GND1 β Input 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
ADUM4221BRWZ is suitable for 6 applications: Isolated Switch-Mode Power Supplies, Motor Drives, Solar Inverters, Industrial Automation, Electric Vehicle Chargers, Renewable Energy Systems.
Isolated Switch-Mode Power Supplies
The ADUM4221BRWZ is ideal for isolated DC-DC converters and switch-mode power supplies where high-side and low-side MOSFETs need to be driven with galvanic isolation. Its 4 A peak output current ensures fast switching of large gate capacitances, while the 5 kVrms isolation protects low-voltage control circuitry from high-voltage transients. The adjustable dead time prevents shoot-through, improving efficiency and reliability. With a propagation delay of 60 ns, it supports high-frequency operation up to several hundred kHz, making it suitable for compact power supplies.
Recommended
Motor Drives
In motor drive applications, the ADUM4221BRWZ provides isolated gate drive for the high-side and low-side switches in a half-bridge or full-bridge inverter. Its high CMTI of 100 kV/us ensures reliable operation in noisy environments with fast voltage transients. The adjustable dead time allows optimization of switching to minimize losses and prevent shoot-through. The wide output supply range (4.5 V to 18 V) accommodates various gate drive voltages for IGBTs and MOSFETs. This makes it suitable for industrial motor control, robotics, and automotive traction inverters.
Recommended
Solar Inverters
The ADUM4221BRWZ is well-suited for solar inverter applications, where it drives the power switches in the DC-AC conversion stage. Its 5 kVrms isolation provides the necessary galvanic isolation between the high-voltage DC bus and the control electronics. The 4 A peak output current enables efficient switching of large IGBTs, while the adjustable dead time helps optimize efficiency and reduce EMI. The device's wide operating temperature range (-40Β°C to +125Β°C) ensures reliable operation in outdoor environments. Its high CMTI also ensures stable performance under fast voltage transients common in solar inverters.
Recommended
Industrial Automation
In industrial automation, the ADUM4221BRWZ is used in isolated gate drive circuits for motor controls, robotics, and power supplies. Its robust isolation (5 kVrms) and high CMTI (100 kV/us) ensure reliable operation in harsh industrial environments with high electrical noise. The adjustable dead time feature allows precise control of switching to prevent shoot-through and reduce EMI. The device's wide input supply range (2.5 V to 6.5 V) makes it compatible with various logic levels, simplifying integration with microcontrollers and PLCs. Its 16-SOIC package is compact and suitable for space-constrained industrial PCBs.
Recommended
Electric Vehicle Chargers
The ADUM4221BRWZ is suitable for electric vehicle (EV) chargers, where it drives the power switches in the AC-DC and DC-DC conversion stages. Its 5 kVrms isolation provides the required galvanic isolation between the high-voltage battery and the control electronics. The 4 A peak output current ensures efficient switching of high-power IGBTs and MOSFETs, while the adjustable dead time helps optimize efficiency and reduce EMI. The device's wide operating temperature range and high CMTI make it reliable in automotive environments. Its compact 16-SOIC package is ideal for space-constrained charger designs.
Recommended
Renewable Energy Systems
The ADUM4221BRWZ is used in renewable energy systems such as wind turbines and energy storage systems, where it drives power switches in inverters and converters. Its high isolation voltage (5 kVrms) and CMTI (100 kV/us) ensure reliable operation in high-voltage, noisy environments. The adjustable dead time allows optimization of switching to maximize efficiency and minimize losses. The device's wide input supply range (2.5 V to 6.5 V) makes it compatible with various control logic, and its 16-SOIC package is suitable for compact power electronics. This makes it a versatile choice for renewable energy applications.
Recommended
Recommended Products Summary
Engineering reference data for ADUM4221BRWZ β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADUM4221BRIZ | ADUM4223BRWZ | ISO7721 |
|---|---|---|---|---|
| Package | 16-SOIC | 16-SOIC | 16-SOIC | 16-SOIC |
| Brand | Analog Devices | Analog Devices | Analog Devices | Texas Instruments |
| Peak Output Current | 4 A | 4 A | 4 A | 4 A |
| Isolation Voltage | 5000 Vrms | 5000 Vrms | 5000 Vrms | 5000 Vrms |
| Adjustable Dead Time | Yes | Yes | No | No |
| Input Configuration | Dual Input (VIA, VIB) | Dual Input | Single Input with Enable | Dual Input |
| Propagation Delay | 60 ns | 60 ns | 60 ns | 16 ns |
| CMTI | 100 kV/us | 100 kV/us | 100 kV/us | 100 kV/us |
Key Differentiators
- Adjustable dead time (vs ADUM4223BRWZ)
- Dual independent inputs (vs ADUM4223BRWZ)
- Higher CMTI (vs ISO7721)
Design Notes
For optimal performance, place the ADUM4221BRWZ close to the power switches to minimize gate drive loop inductance. Use wide, short traces for the gate drive outputs (VOA, VOB) and ensure a solid ground plane for GNDA and GNDB. Add a 0.1 uF ceramic capacitor close to each output supply pin (VDDA, VDDB) and a 1 uF bulk capacitor for peak current demands.
The ADUM4221BRWZ dissipates power primarily during switching. At 4 A peak output and high switching frequencies, ensure adequate thermal relief. The 16-SOIC package has a thermal resistance of approximately 80Β°C/W (theta_JA). For high-power applications, provide a copper pour under the device and consider a thermal pad if available. Monitor junction temperature to stay below 125Β°C.
Do not exceed the absolute maximum ratings: VDD1 up to 7 V, VDDA/VDDB up to 20 V. Ensure the dead time resistor is connected to the DT pin to set the desired dead time; leaving it floating may cause unpredictable behavior. Also, avoid driving the DISABLE pin with voltages above VDD1. Use proper bypassing on VDD1 to prevent noise coupling.
Compliance Information
RoHS compliant per Analog Devices product page. Not AEC-Q100 qualified. Lead-free finish.
