ADUM3221ARZ - Isolated 4A Dual-Channel Gate Driver | Analog Devices
Артикул: ADUM3221ARZ ✓ Активен| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 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 Обзор
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.
Аналоги без доработки для ADUM3221ARZ — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Варианты в этой серии
Модели той же серии, совместимые без доработки с ADUM3221ARZ (тот же форм-фактор и посадочное место) — отличается по Package, Isolation Voltage, Technology, Propagation Delay, Number of Channels.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
ADUM3221ARZ-RL7
✅ Прямая замена✓ В наличии
$2.2 / шт.
Открыть даташит →ADUM3221WARZ
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
ADUM3221TRZ-EP-RL7
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
ADUM3220ARZ
✅ Прямая замена ⚠️ Характеристики не проверены✓ В наличии
$2.2 / шт.
Открыть даташит →ADUM3221ARZ Максимальные параметры и электрические характеристики
| 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) |
| Корпус / Типоразмер | 8-SOIC (0.154, 3.90mm Width) |
| Тип монтажа | Surface Mount |
| Technology | iCoupler |
| Статус RoHS | RoHS Compliant |
| Lead Free Status | Lead Free |
| Скорость передачи данных | N/A |
| Isolation Type | Magnetic Coupling |
Конфигурация выводов ADUM3221ARZ
| Контакт 1 | VDD1 — Input supply voltage |
| Контакт 2 | GND1 — Input ground |
| Контакт 3 | VIA — Input signal for channel A |
| Контакт 4 | VIB — Input signal for channel B |
| Контакт 5 | GND2 — Output ground |
| Контакт 6 | VOA — Output for channel A |
| Контакт 7 | VOB — Output for channel B |
| Контакт 8 | VDD2 — Output supply voltage |
Типичное применение
ADUM3221ARZ подходит для 6 применениеs: 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.
Рекомендуется
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.
Рекомендуется
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.
Рекомендуется
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.
Рекомендуется
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.
Рекомендуется
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.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для ADUM3221ARZ — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | 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 |
Ключевые отличия
- 4 A peak output current (против ADUM3220ARZ)
- Automotive grade option (против ADUM3221WARZ)
- Enhanced product variant (против ADUM3221TRZ-EP-RL7)
Заметки по проектированию
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.
Информация о соответствии
RoHS compliant and lead-free per DigiKey. Not AEC-Q100 qualified; use ADUM3221WARZ for automotive.
