Analog Devices

ADUM4221ARWZ-RL7 - Isolated Half-Bridge Gate Driver | Analog Devices

Name: ADUM4221ARWZ-RL7
Brand: Analog Devices
Price: 2.5 USD
Availability: InStock

MPN: ADUM4221ARWZ-RL7 ✓ Active

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5700 Vrms Vdss 4 A Id 16-SOIC Package

From $2.5 USD / Unit

MOQ: 1 |

Price updated: 2026-08-21

Volume Pricing

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

ℹ️ All prices are in USD

View Datasheet (PDF) View Alternatives

Quantity

Drop-in alternatives for ADUM4221ARWZ-RL7 — 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:

ADUM4221-2ARIZ-RL

✅ Drop-In

📦 16-SOIC

Same package and pinout, but with VIA and VIB inputs for dual input control

📋 Reference alternative (not in catalog)

ADUM4221BRIZ

✅ Drop-In

📦 16-SOIC

Same package, but with different UVLO threshold (7.5V)

📋 Reference alternative (not in catalog)

UCC21520DW

✅ Drop-In

📦 16-SOIC

Cross-brand, similar 4A peak output, but different pinout and UVLO options

📋 Reference alternative (not in catalog)

Si8233BB-D-IS1

✅ Drop-In

📦 16-SOIC

Cross-brand, similar 4A peak output, but different pinout and isolation rating

📋 Reference alternative (not in catalog)

ℹ️ 2 cross-package part(s) hidden — different package requires PCB rework and is not a true drop-in replacement. Contact us if you need cross-package suggestions.

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	-40°C to +125°C
RoHS	Compliant
Mounting Type	Surface Mount
MSL Level	1
Output Configuration	Half-Bridge

ADUM4221ARWZ-RL7 Pin Configuration

Pin 1	VDD1 — Input-side supply voltage
Pin 2	GND1 — Input-side ground
Pin 3	VIA — Input signal for high-side driver
Pin 4	VIB — Input signal for low-side driver
Pin 5	DT — Dead time adjustment
Pin 6	GND1 — Input-side ground
Pin 7	NC — No connect
Pin 8	NC — No connect
Pin 9	VDD2 — Output-side supply voltage
Pin 10	VOA — High-side output
Pin 11	GND2 — Output-side ground
Pin 12	VOB — Low-side output
Pin 13	GND2 — Output-side ground
Pin 14	NC — No connect
Pin 15	NC — No connect
Pin 16	GND1 — 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

DRV8432DKDR · Texas Instruments L9978 · STMicroelectronics

⚡

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 (-40°C to +125°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

ADUM5410ARWZ (Isolated DC-DC converter for gate drive power) ADUM1441ARWZ (Isolated digital isolator for control signals)

🏭

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

ADUM1201ARZ (Dual-channel digital isolator for signal isolation) ADUM1441ARWZ (Quad-channel digital isolator for control signals)

🚗

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

ADBMS6948 (Battery management system IC) LTC3882-1 (Digital power system management controller)

⚡

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

ADUM5410ARWZ (Isolated DC-DC converter for gate drive power) ADUM1441ARWZ (Isolated digital isolator for control signals)

Recommended Products Summary

UC3842BD1013TR STMicroelectronics Used in: Isolated Switch-Mode Power Supplies TNY277GN Power Integrations Used in: Isolated Switch-Mode Power Supplies DRV8432DKDR Texas Instruments Used in: Motor Drives L9978 STMicroelectronics Used in: Motor Drives ADUM5410ARWZ Isolated DC-DC converter for gate drive power Used in: Solar Inverters, Uninterruptible Power Supplies (UPS) ADUM1441ARWZ Isolated digital isolator for control signals Used in: Solar Inverters, Industrial Automation, Uninterruptible Power Supplies (UPS) ADUM1201ARZ Dual-channel digital isolator for signal isolation Used in: Industrial Automation ADBMS6948 Battery management system IC Used in: Electric Vehicle Chargers LTC3882-1 Digital power system management controller Used in: Electric Vehicle Chargers

What is the ADUM4221ARWZ-RL7?

The ADUM4221ARWZ-RL7 is an isolated half-bridge gate driver from Analog Devices, providing 4 A peak output current and adjustable dead time. It uses iCoupler technology for galvanic isolation and is available in a 16-SOIC package. According to the ADUM4221 datasheet, it is designed for driving power MOSFETs and IGBTs in applications like motor drives and switch-mode power supplies.

What is the isolation voltage of ADUM4221ARWZ-RL7?

The ADUM4221ARWZ-RL7 provides 5700 Vrms isolation voltage, as specified in the datasheet. This high isolation rating makes it suitable for applications requiring robust galvanic isolation, such as industrial motor drives and isolated power supplies. The isolation is achieved through Analog Devices' iCoupler technology, which uses monolithic transformers for signal transfer.

What is the peak output current of ADUM4221ARWZ-RL7?

The ADUM4221ARWZ-RL7 delivers a peak output current of 4 A, as stated in the datasheet. This high current capability allows it to drive large gate capacitances of power MOSFETs and IGBTs, ensuring fast switching and reduced switching losses. The output stage is designed to source and sink 4 A peak current.

Does ADUM4221ARWZ-RL7 have adjustable dead time?

Yes, the ADUM4221ARWZ-RL7 features adjustable dead time, allowing designers to set the delay between high-side and low-side switching. This is crucial for preventing shoot-through currents in half-bridge configurations. The dead time is set via an external resistor connected to the DT pin, as described in the datasheet.

What is the propagation delay of ADUM4221ARWZ-RL7?

The ADUM4221ARWZ-RL7 has a typical propagation delay of 60 ns, as specified in the datasheet. This fast propagation delay ensures precise timing between input control signals and output switching, which is essential for high-frequency power conversion. The delay is matched between channels to maintain balanced operation.

What is the common-mode transient immunity of ADUM4221ARWZ-RL7?

The ADUM4221ARWZ-RL7 offers a common-mode transient immunity of 100 kV/us, as stated in the datasheet. This high immunity ensures reliable operation in noisy environments where fast voltage transients occur across the isolation barrier. It prevents false triggering of the outputs, maintaining signal integrity.

What is the supply voltage range for ADUM4221ARWZ-RL7?

The ADUM4221ARWZ-RL7 operates with an input-side supply voltage of 2.7 V to 6.5 V and an output-side supply voltage of 4.5 V to 18 V, as per the datasheet. This wide range allows flexibility in interfacing with various logic levels and power stage voltages. The device includes UVLO to ensure proper operation.

What is the package type of ADUM4221ARWZ-RL7?

The ADUM4221ARWZ-RL7 is available in a 16-lead SOIC package, as indicated in the datasheet. This surface-mount package is suitable for automated assembly and offers good thermal performance. The package is RoHS compliant and supports a wide operating temperature range of -40°C to +125°C.

Is ADUM4221ARWZ-RL7 RoHS compliant?

Yes, the ADUM4221ARWZ-RL7 is RoHS compliant, as stated in the datasheet. This means it meets the European Union's Restriction of Hazardous Substances directive, limiting the use of lead, mercury, cadmium, and other hazardous materials. This compliance is important for environmental and regulatory requirements.

What are the typical applications of ADUM4221ARWZ-RL7?

The ADUM4221ARWZ-RL7 is commonly used in isolated switch-mode power supplies, motor drives, solar inverters, and industrial automation. Its 4 A peak output current and adjustable dead time make it suitable for driving power MOSFETs and IGBTs in half-bridge and full-bridge topologies. The high isolation voltage and fast propagation delay enable efficient and reliable power conversion.

Where can I buy ADUM4221ARWZ-RL7?

The ADUM4221ARWZ-RL7 is available from major distributors such as DigiKey, Mouser, and LCSC. As of 2026-08-22, LCSC lists it at $4.1620. You can also purchase directly from Analog Devices or through authorized distributors. Check current stock and pricing on distributor websites for the latest availability.

What is the price of ADUM4221ARWZ-RL7?

As of 2026-08-22, the ADUM4221ARWZ-RL7 is priced at approximately $4.16 for single-unit quantities, based on LCSC data. Volume pricing may be lower, with discounts available for larger quantities. For the most accurate and up-to-date pricing, check distributor websites like DigiKey, Mouser, or LCSC.

What is the lead time for ADUM4221ARWZ-RL7?

The lead time for ADUM4221ARWZ-RL7 varies by distributor and stock availability. As of 2026-08-22, LCSC indicates it is in stock, while DigiKey and Mouser may have different lead times. It is recommended to check the specific distributor's website for real-time inventory and lead time information.

Is ADUM4221ARWZ-RL7 in stock?

As of 2026-08-22, the ADUM4221ARWZ-RL7 is listed as in stock at LCSC, according to the verified web data. Availability at other distributors like DigiKey and Mouser may vary. It is advisable to check multiple sources to confirm current stock levels and lead times.

What is the difference between ADUM4221 and ADUM3221?

The ADUM4221 and ADUM3221 are both isolated gate drivers from Analog Devices, but they differ in package and isolation voltage. The ADUM4221 is available in a 16-SOIC package with 5700 Vrms isolation, while the ADUM3221 comes in an 8-SOIC package with 2500 Vrms isolation. Both provide 4 A peak output current, but the ADUM4221 offers higher isolation for more demanding applications.

Engineering reference data for ADUM4221ARWZ-RL7 — comparison, design guidance, and compliance information.

Selection Guide

Choose the ADUM4221ARWZ-RL7 when you need a high-isolation (5700 Vrms) half-bridge gate driver with 4 A peak output current and adjustable dead time. It is ideal for industrial applications like motor drives, solar inverters, and isolated SMPS. If you require dual input control, consider the ADUM4221-2ARIZ-RL, which is pin-compatible. For lower isolation requirements (2500 Vrms) and a smaller package, the ADUM3221 series may be sufficient. Cross-brand alternatives like the UCC21520DW (TI) and Si8233BB-D-IS1 (Skyworks) offer similar performance but may have different pinouts and UVLO options, so verify compatibility before substitution.

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 100°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.