ADuM4221-2

Isolated, Half Bridge Gate Driver, Dual Input, 4 A Output

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Overview

Features and Benefits
Product Details

Features and Benefits

4 A peak current (<2 Ω R_{DSON_x})
2.5 V to 6.5 V logic input voltage
4.5 V to 35 V output supply voltage
UVLO V_DD1 positive going threshold: 2.5 V maximum
Multiple UVLO options for V_DDA and V_DDB positive going threshold
- Grade A: 4.5 V maximum
- Grade B: 7.5 V maximum
- Grade C: 11.6 V maximum
Precise timing characteristics
- 44 ns maximum propagation delay
Adjustable dead time and dual input (ADuM4221)
Adjustable dead time and single input (ADuM4221-1)
No dead time control and dual input (ADuM4221-2)

CMOS input logic levels
High common-mode transient immunity: 150 kV/µs
High junction temperature operation: 125°C
Default low output
Safety and regulatory approvals (pending)
- UL recognition per UL 1577
  - 5700 V rms for 1 minute duration
- CSA Component Acceptance Notice 5A
- VDE certificate of conformity
  - DIN V VDE V 0884-11: V_IORM= 849 V peak
Increased creepage wide body, 16-lead SOIC_IC

Product Details

The ADuM4221/ADuM4221-1/ADuM4221-2 are 4 A isolated, half bridge gate drivers that employ the Analog Devices, Inc., iCoupler^® technology to provide independent and isolated high-side and low-side outputs. The ADuM4221/ADuM4221-1/ADuM4221-2 provide 5700 V rms isolation in an increased creepage wide body, 16-lead SOIC_IC. Combining high speed CMOS and monolithic transformer technology, these isolation components provide outstanding performance characteristics superior to the alternatives, such as the combination of pulse transformers and gate drivers.

The isolators operate with a logic input voltage ranging from 2.5 V to 6.5 V, providing compatibility with lower voltage systems. In comparison to gate drivers employing high voltage level translation methodologies, the ADuM4221/ADuM4221-1/ADuM4221-2 offer the benefit of true, galvanic isolation between the input and each output.

The ADuM4221/ADuM4221-1/ADuM4221-2 each have built in overlap protection and allow dead time adjustment. A single resistor between the dead time pin (DT) and the GND¹ pin sets the dead time on the secondary side between the high-side and the low-side outputs.

An internal thermal shutdown (TSD) sets outputs low if the internal temperature on the ADuM4221/ADuM4221-1/ADuM4221-2 exceeds the TSD temperature. As a result, the ADuM4221/ADuM4221-1/ADuM4221-2 provide reliable control over the switching characteristics of the insulated gate bipolar transistor (IGBT)/metal-oxide semiconductor field effect transistor (MOSFET) configurations over a wide range of positive or negative switching voltages.

Applications

Switching power supplies
Isolated IGBT/MOSFET gate drives
Industrial inverters
Gallium nitride (GaN)/silicon carbide (SiC) compatible

¹ Protected by U.S. Patents 5,952,849; 6,873,065; 7,075,239. Other patents pending.

Product Categories

Power Monitor, Control, and Protection
- Isolated Gate Drivers

Markets and Technologies

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Product Lifecycle Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

Evaluation Kits (1)

EVAL-ADuM4221-2

Evaluating the ADuM4221-2 Isolated, Half Bridge Gate Driver, 4 A Output

EVAL-ADuM4221-2

View Detailed Evaluation Kit Information

The EVAL-ADuM4221-2EBZ supports the ADuM4221-2 half bridge gate driver that employs Analog Devices, Inc., iCoupler^® technology to provide independent and isolated high-side and low-side outputs. The EVAL-ADuM4221-2EBZ is populated with the ADuM4221-2, which has the V_IA and V_IB. The EVAL-ADuM4221-2EBZ supplies jumpers and screw terminals to configure different drive conditions. The EVAL-ADuM4221-2EBZ operates with square waves and dc values on the V_IA, V_IB, and DISABLE pins.

The ADuM4221-2 operates with an input supply ranging from 2.5 V to 6.5 V, providing compatibility with lower voltage systems. Logic level voltages at the input pins control the V_OA and V_OB outputs.

The driver has a DISABLE input pin that, if held high, shuts the device off regardless of the input on the channels.

The ADuM4221-2 provides operation with voltages of up to 35 V on the secondary side. The EVAL-ADuM4221-2EBZ has a provision for the high-side supply to be bootstrapped to the low-side supply. The EVAL-ADuM4221-2EBZ facilitates testing of the propagation delay, drive strength, and input logic of the device. Because the EVAL-ADuM4221-2EBZ has footprints for insulated gate bipolar transistors (IGBTs) and metal-oxide semiconductor field effect transistors (MOSFETs) in TO-220 and TO-252 packages, the ADuM4221-2 can be evaluated with many different power devices.

For complete information about the ADuM4221-2, refer to the ADuM4221-2 data sheet in conjunction with the user guide when using the EVAL-ADuM4221-2EBZ.

Features & Benefits

Output voltage range to 35 V
Screw terminals for easy connectivity
Pad placement for external series gate resistors
Pad placement for capacitive load testing
Supports TO-220 or TO-252 IGBTs or MOSFETs
Bootstrap option
Jumper placement for easy half bridge setup

Resources

UG1858: Evaluating the ADuM4221-2 Isolated, Half Bridge Gate Driver, 4 A Output (Rev. 0)

PDF

340.41 K

Documentation & Resources

Data Sheets

ADuM4221/ADuM4221-1/ADuM4221-2: Isolated, Half Bridge Gate Drivers with Adjustable Dead Time, 4 A Output Data Sheet (Rev. B)
10/6/2020

PDF

1 M

User Guides

UG1858: Evaluating the ADuM4221-2 Isolated, Half Bridge Gate Driver, 4 A Output (Rev. 0)
10/6/2020

PDF

340 K

Safety and Regulatory Compliance

Safety and Regulatory Compliance Information
1/28/2016

Product Selection Guide

Digital Isolation and Interface Technology Selection Guide
2/7/2020

PDF

4 M

Videos

Fundamentals of Isolated Gate Drivers
4/22/2022

SERIES
Verified SiC Converter Solution from Gate Driver to Power MOSFET
3/3/2022
Isolated Gate Drive Strength - Higher Frequency for Lower Losses
3/3/2022

Tools & Simulations

LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

LTspice downloads and documentation

Models for the following parts are available in LTspice:

ADUM4221-1A

ADUM4221-1B

ADUM4221-1C

ADUM4221-2A

ADUM4221-2B

ADUM4221-2C

ADUM4221A

ADUM4221B

ADUM4221C

IBIS Models

IBS

16.18 K

ADuM4221-2 IBIS Model

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.

Part Number	Material Declaration	Reliability Data	Pin/Package Drawing	CAD Symbols, Footprints & 3D Models
ADUM4221-2ARIZ	Material Declaration	Reliability Data	16-Lead SOIC (Increased Creepage)	Ultra Librarian SamacSys
ADUM4221-2ARIZ-RL	Material Declaration	Reliability Data	16-Lead SOIC (Increased Creepage)	Ultra Librarian SamacSys
ADUM4221-2BRIZ	Material Declaration	Reliability Data	16-Lead SOIC (Increased Creepage)	Ultra Librarian SamacSys
ADUM4221-2BRIZ-RL	Material Declaration	Reliability Data	16-Lead SOIC (Increased Creepage)	Ultra Librarian SamacSys
ADUM4221-2CRIZ	Material Declaration	Reliability Data	16-Lead SOIC (Increased Creepage)	Ultra Librarian SamacSys
ADUM4221-2CRIZ-RL	Material Declaration	Reliability Data	16-Lead SOIC (Increased Creepage)	Ultra Librarian SamacSys
Wafer Fabrication Data

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Support & Discussions

ADuM4221-2 Discussions

ADUM4221 DT pin connect to 5V(VDDI)

ADUM4221 DT connect to 5V(VDDI)

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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.