ADUM4221ARWZ - Isolated Half-Bridge Gate Driver | Analog Devices
MPN: ADUM4221ARWZ 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 ADUM4221ARWZ 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:
ADUM4221-1ARIZ
β Drop-Inπ Reference alternative (not in catalog)
ADUM4223ARWZ
β Drop-Inπ Reference alternative (not in catalog)
ADUM4221-2
β Drop-Inπ Reference alternative (not in catalog)
ISO5852S
β Drop-Inπ Reference alternative (not in catalog)
Si8271
β Drop-Inπ Reference alternative (not in catalog)
ADUM4221ARWZ Maximum Ratings & Electrical Characteristics
| Isolation Rating | 5000 Vrms |
| Peak Output Current | 4 A |
| Input Supply Voltage (VDD1) | 2.5 V to 6.5 V |
| Output Supply Voltage (VDDA/VDDB) | 4.5 V to 35 V |
| Propagation Delay | 60 ns |
| Common-Mode Transient Immunity (CMTI) | 100 kV/us |
| Adjustable Dead Time | Yes |
| Disable Pin | Yes |
| UVLO Threshold | 4.5 V (typical) |
| Package | SOIC-16 (RW-16) |
| Operating Temperature Range | -40C to +125C |
| Number of Channels | 2 |
| Isolation Technology | iCoupler (magnetic) |
| RoHS Status | Compliant |
| MSL Level | 1 |
ADUM4221ARWZ 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 High-side input |
| Pin 4 | VIB β Low-side input |
| Pin 5 | DISABLE β Disable pin (active high) |
| Pin 6 | DEADTIME β Adjustable dead time control |
| Pin 7 | GND1 β Input ground |
| Pin 8 | NC β No connect |
| Pin 9 | VDDA β High-side output supply |
| Pin 10 | VOA β High-side output |
| Pin 11 | GNDA β High-side ground |
| Pin 12 | GNDB β Low-side ground |
| Pin 13 | VOB β Low-side output |
| Pin 14 | VDDB β Low-side output supply |
| 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
ADUM4221ARWZ is suitable for 6 applications: Isolated Switch-Mode Power Supplies, Motor Drives, Uninterruptible Power Supplies (UPS), Photovoltaic Inverters, Electric Vehicle Chargers, Industrial Power Supplies.
Isolated Switch-Mode Power Supplies
The ADUM4221ARWZ is ideal for isolated SMPS topologies such as half-bridge and full-bridge converters. Its 4 A peak output current and 60 ns propagation delay enable efficient driving of power MOSFETs at high switching frequencies. The 5 kVrms isolation ensures safe signal transfer across the isolation barrier, while the adjustable dead time prevents shoot-through current, improving reliability. The wide output supply range (4.5 V to 35 V) accommodates various power stage voltages, making it a versatile choice for AC-DC and DC-DC converters.
Recommended
Motor Drives
In motor drive applications, the ADUM4221ARWZ provides isolated gate drive for the high-side and low-side switches in a three-phase inverter. Its high CMTI (100 kV/us) ensures reliable operation in noisy industrial environments, and the adjustable dead time allows optimization of switching losses and prevents cross-conduction. The 4 A output current is sufficient to drive IGBTs and MOSFETs used in motor control, while the wide input supply range (2.5 V to 6.5 V) interfaces directly with microcontrollers and DSPs. The device's fast propagation delay (60 ns) supports high-frequency PWM for smooth motor control.
Recommended
Uninterruptible Power Supplies (UPS)
The ADUM4221ARWZ is well-suited for UPS systems where galvanic isolation is critical for safety and noise immunity. It drives the half-bridge inverter stage that converts DC to AC, providing 4 A peak output current to switch IGBTs efficiently. The 5 kVrms isolation protects the control circuitry from high-voltage transients, and the adjustable dead time ensures reliable operation during load transients. The device's wide operating temperature range (-40C to +125C) makes it suitable for demanding UPS environments, and its compact SOIC-16 package saves board space.
Recommended
Photovoltaic Inverters
In solar inverters, the ADUM4221ARWZ provides isolated gate drive for the DC-AC conversion stage. Its high isolation rating (5 kVrms) ensures safety in high-voltage systems, and the 4 A output current drives power MOSFETs and IGBTs efficiently. The adjustable dead time is crucial for preventing shoot-through in half-bridge topologies, and the fast propagation delay (60 ns) supports high-frequency switching to maximize power conversion efficiency. The device's wide input supply range allows direct interfacing with digital controllers, simplifying the design of MPPT (Maximum Power Point Tracking) circuits.
Recommended
Electric Vehicle Chargers
The ADUM4221ARWZ is used in electric vehicle (EV) chargers to drive the power stage of AC-DC converters. Its 5 kVrms isolation provides the necessary galvanic isolation between the high-voltage battery side and the low-voltage control side, ensuring safety. The 4 A peak output current and 60 ns propagation delay enable efficient switching at high frequencies, reducing the size of magnetic components. The adjustable dead time helps optimize efficiency and reduce EMI. The device's wide operating temperature range and robust CMTI make it suitable for automotive-grade applications.
Recommended
Industrial Power Supplies
The ADUM4221ARWZ is ideal for industrial power supplies requiring high isolation and robust performance. It drives the switching transistors in half-bridge or full-bridge topologies, providing 4 A peak output current and 5 kVrms isolation. The device's high CMTI (100 kV/us) ensures reliable operation in electrically noisy industrial environments, and the adjustable dead time prevents shoot-through, enhancing system reliability. The wide input supply range (2.5 V to 6.5 V) allows direct connection to logic-level controllers, and the SOIC-16 package is suitable for space-constrained industrial designs.
Recommended
Recommended Products Summary
Engineering reference data for ADUM4221ARWZ β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADUM4221-1ARIZ | ADUM4223ARWZ | ISO5852S |
|---|---|---|---|---|
| Package | SOIC-16 | SOIC-16 | SOIC-16 | SOIC-16 |
| Brand | Analog Devices | Analog Devices | Analog Devices | Texas Instruments |
| Peak Output Current | 4 A | 4 A | 4 A | 2.5 A |
| Isolation Rating | 5000 Vrms | 5000 Vrms | 5000 Vrms | 5700 Vrms |
| Propagation Delay | 60 ns | 60 ns | 60 ns | 76 ns |
| CMTI | 100 kV/us | 100 kV/us | 100 kV/us | 100 kV/us |
| Adjustable Dead Time | Yes | Yes | No | No |
| Input Supply Voltage | 2.5 V to 6.5 V | 2.5 V to 6.5 V | 2.5 V to 6.5 V | 2.25 V to 5.5 V |
Key Differentiators
- Adjustable dead time (vs ADUM4223ARWZ)
- Higher output current (vs ISO5852S)
- Dual independent inputs (vs ADUM4223ARWZ)
Design Notes
For optimal performance, place decoupling capacitors close to the VDD1, VDDA, and VDDB pins. Use a 0.1 uF ceramic capacitor for high-frequency noise and a 10 uF electrolytic capacitor for bulk energy storage. Ensure the ground planes are properly separated to maintain isolation spacing.
Minimize the loop area between the gate driver outputs (VOA, VOB) and the power MOSFETs to reduce parasitic inductance and ringing. Use short, wide traces for high-current paths. Keep the high-side and low-side circuits physically separated to avoid coupling.
Do not exceed the absolute maximum ratings for VDD1, VDDA, and VDDB. Ensure the dead-time resistor is placed close to the DEADTIME pin to avoid noise pickup. Verify that the input signals are within the recommended operating range to prevent latch-up.
Compliance Information
RoHS compliant per Analog Devices product page. Not AEC-Q100 qualified.
