ADUM3221ARZ - Isolated 4A Dual-Channel Gate Driver | Analog Devices
料号： ADUM3221ARZ ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $2.16 | $2.16 |
| 10 | $1.95 | $19.50 |
| 100 | $1.75 | $175.00 |
| 500 | $1.58 | $790.00 |
| 1,000 | $1.52 | $1,520.00 |
ADUM3221ARZ 概述
A gate driver is a power amplifier that accepts a low-power input from a controller IC and produces a high-current drive input for the gate of a power transistor. In isolated gate drivers, the input and output are galvanically isolated, protecting the low-voltage control circuitry from high-voltage transients and ground loops. The ADUM3221ARZ provides two independent isolation channels, each capable of sourcing and sinking 4 A peak current, making it suitable for driving large capacitive loads with fast switching speeds.
Key features of the ADUM3221ARZ include a maximum propagation delay of 60 ns, channel-to-channel matching of 5 ns, and a 4.1 V nominal under-voltage lockout (UVLO) threshold. The device operates over a wide supply voltage range and supports high junction temperatures, making it robust for industrial applications. The iCoupler technology ensures reliable isolation with a 2500 Vrms isolation rating, meeting safety requirements for many power systems.
The ADUM3221ARZ is designed for use in isolated DC-DC converters, motor drives, and power inverters. Its high peak output current and fast propagation delay enable efficient switching of power transistors, reducing switching losses and improving system efficiency. The device also features a wide operating temperature range, making it suitable for harsh environments.
When designing with the ADUM3221ARZ, it is important to ensure proper PCB layout to minimize parasitic inductance and maintain signal integrity. The input and output supplies should be adequately decoupled with ceramic capacitors placed close to the pins. The device's UVLO feature ensures that the gate driver remains disabled until the supply voltage is sufficient, preventing erratic operation during power-up.
Overall, the ADUM3221ARZ is a reliable and high-performance isolated gate driver that simplifies the design of isolated power systems while providing excellent electrical performance and robustness.
直接替换替代料： ADUM3221ARZ ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： ADUM3221ARZ （相同外形与封装尺寸） ——差异在于 Package, Isolation Voltage, Technology, Propagation Delay, Number of Channels.
快速对比工具——选择替代料号进行并排对比：
ADUM3221ARZ-RL7
✅ 直接替换✓ 有现货
$2.2 / 个
查看数据手册 →ADUM3221WARZ
✅ 直接替换📋 参考替代料（不在目录中）
ADUM3221TRZ-EP-RL7
✅ 直接替换📋 参考替代料（不在目录中）
ADUM3220ARZ
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$2.2 / 个
查看数据手册 →ADUM3221ARZ 最大额定值与电气特性
| Number of Channels | 2 |
| Peak Output Current | 4 A |
| Isolation Voltage | 2500 Vrms |
| Propagation Delay | 60 ns (max) |
| Channel-to-Channel Matching | 5 ns (max) |
| UVLO Threshold | 4.1 V (nominal) |
| 封装 / 外壳 | 8-SOIC (0.154, 3.90mm Width) |
| 安装类型 | Surface Mount |
| Technology | iCoupler |
| RoHS 状态 | RoHS Compliant |
| Lead Free Status | Lead Free |
| 数据速率 | N/A |
| Isolation Type | Magnetic Coupling |
ADUM3221ARZ 引脚配置
| 引脚 1 | VDD1 — Input supply voltage |
| 引脚 2 | GND1 — Input ground |
| 引脚 3 | VIA — Input signal for channel A |
| 引脚 4 | VIB — Input signal for channel B |
| 引脚 5 | GND2 — Output ground |
| 引脚 6 | VOA — Output for channel A |
| 引脚 7 | VOB — Output for channel B |
| 引脚 8 | VDD2 — Output supply voltage |
典型应用
ADUM3221ARZ 适用于 6 应用s: Isolated DC-DC Converters, Motor Drives, Power Inverters, Electric Vehicle Chargers, Industrial Power Supplies, Renewable Energy Systems.
Isolated DC-DC Converters
The ADUM3221ARZ is ideal for isolated DC-DC converters, where its 4 A peak output current and 60 ns propagation delay enable efficient switching of power MOSFETs. The galvanic isolation provided by iCoupler technology protects the control circuitry from high-voltage transients, ensuring reliable operation in power supply modules. Its fast switching reduces losses and improves overall converter efficiency, making it suitable for telecom, industrial, and automotive power systems.
推荐
Motor Drives
In motor drive applications, the ADUM3221ARZ provides the high peak current and fast propagation delay needed to drive IGBTs and power MOSFETs in the inverter stage. The 2500 Vrms isolation protects the microcontroller from high-voltage transients and ground loops, enhancing system reliability. Its 5 ns channel-to-channel matching ensures balanced gate drive signals, reducing electromagnetic interference and improving motor control precision in industrial automation and robotics.
推荐
Power Inverters
The ADUM3221ARZ is well-suited for power inverters used in solar and UPS systems. Its 4 A peak output current enables fast charging and discharging of the gate capacitance of power switches, reducing switching losses. The isolation barrier ensures safe operation in high-voltage environments, while the UVLO feature prevents insufficient gate drive during power-up. The device's wide operating temperature range makes it reliable in outdoor and harsh industrial conditions.
推荐
Electric Vehicle Chargers
In electric vehicle (EV) chargers, the ADUM3221ARZ provides reliable gate drive for power switches in the AC-DC and DC-DC stages. Its 2500 Vrms isolation meets safety requirements for high-voltage systems, while the 4 A peak output current ensures efficient switching of SiC and GaN devices. The fast propagation delay and channel-to-channel matching contribute to high-frequency operation, reducing the size of magnetic components and improving charger efficiency.
推荐
Industrial Power Supplies
The ADUM3221ARZ is used in industrial power supplies to drive power switches in isolated topologies such as flyback and forward converters. Its high peak output current and fast propagation delay enable efficient switching, reducing power dissipation and improving thermal performance. The galvanic isolation protects sensitive control electronics from high-voltage transients, ensuring reliable operation in factory automation and process control systems.
推荐
Renewable Energy Systems
In renewable energy systems such as solar inverters and wind turbine converters, the ADUM3221ARZ provides robust gate drive with galvanic isolation. Its 4 A peak output current and 60 ns propagation delay enable efficient switching of power semiconductors, maximizing energy conversion efficiency. The device's wide operating temperature range and high reliability make it suitable for outdoor installations, while the UVLO feature ensures safe operation during power-up and fault conditions.
推荐
推荐产品汇总
工程参考数据： ADUM3221ARZ ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | ADUM3221ARZ-RL7 | ADUM3221WARZ | ADUM3221TRZ-EP-RL7 | ADUM3220ARZ |
|---|---|---|---|---|---|
| Package | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Peak Output Current | 4 A | 4 A | 4 A | 4 A | 2 A |
| Isolation Voltage | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms |
| Propagation Delay | 60 ns (max) | 60 ns (max) | 60 ns (max) | 60 ns (max) | 60 ns (max) |
| Channel-to-Channel Matching | 5 ns (max) | 5 ns (max) | 5 ns (max) | 5 ns (max) | 5 ns (max) |
| UVLO Threshold | 4.1 V (nominal) | 4.1 V (nominal) | 4.1 V (nominal) | 4.1 V (nominal) | 4.1 V (nominal) |
| Automotive Grade | No | No | Yes (AEC-Q100) | No | No |
关键差异点
- 4 A peak output current （对比 ADUM3220ARZ)
- Automotive grade option （对比 ADUM3221WARZ)
- Enhanced product variant （对比 ADUM3221TRZ-EP-RL7)
设计说明
Place decoupling capacitors (0.1 uF and 10 uF) close to the VDD1 and VDD2 pins to ensure stable supply voltages. Use a solid ground plane for both input and output sides, and maintain proper creepage and clearance distances for the isolation barrier as per the datasheet recommendations.
The ADUM3221ARZ can dissipate significant power when driving large capacitive loads at high frequencies. Ensure adequate copper area on the PCB for heat dissipation, and consider the thermal resistance of the 8-SOIC package. For high ambient temperatures, derate the output current accordingly.
Do not exceed the absolute maximum ratings for supply voltages and output currents. Ensure that the input signals are within the specified logic levels to avoid latch-up. Also, verify that the UVLO threshold is compatible with your supply voltage to prevent unintended operation during power-up.
合规信息
RoHS compliant and lead-free per DigiKey. Not AEC-Q100 qualified; use ADUM3221WARZ for automotive.
